App Context API for Objective- SDK

This page describes App Context (formerly Objects v2). To upgrade from Objects v1, refer to the migration guide.

App Context provides easy-to-use, serverless storage for user and channel data you need to build innovative, reliable, scalable applications. Use App Context to store metadata about your application users and channels, and their membership associations, without running your own databases.

PubNub also triggers events when object data changes: set, update, or removal. Setting the same data again doesn't trigger an event. Clients can receive these events in real time and update their front-end application accordingly.

User​

Get metadata for all users​

Returns a paginated list of UUID Metadata objects, optionally including the custom data object for each.

Method(s)​

To Get All UUID Metadata you can use the following method(s) in the Objective-C SDK:

- (void)allUUIDMetadataWithRequest:(PNFetchAllUUIDMetadataRequest *)request 
                        completion:(PNFetchAllUUIDMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for fetching all UUID metadata.
block *
Type: PNFetchAllUUIDMetadataCompletionBlock
Completion block.

PNFetchAllUUIDMetadataRequest​

* required
ParameterDescription
sort
Type: NSArray<NSString *>
Sort by id, name, updated with asc/desc for sort direction (for example, {name: 'asc'}).
includeFields
Type: PNUUIDFields
Bitfield of response fields. Supported: PNUUIDTotalCountField (total count), PNUUIDCustomField (UUID custom), PNUUIDStatusField (UUID status), PNUUIDTypeField (UUID type). Default is PNUUIDTotalCountField (set 0 to reset).
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
start
Type: NSString
Cursor-based pagination.
end
Type: NSString
Cursor-based pagination. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

#import <Foundation/Foundation.h>
#import <PubNub/PubNub.h>

// Basic configuration
PNConfiguration *config = [PNConfiguration configurationWithPublishKey:@"demo"
                                                          subscribeKey:@"demo"
                                                                userID:@"metadataUser"];

// Create a PubNub client instance
PubNub *client = [PubNub clientWithConfiguration:config];

// Example 1: Basic UUID metadata fetch
NSLog(@"Fetching all UUID metadata...");

// Create a basic request
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Response​

Response returned by the client for fetch all UUID metadata:

@interface PNFetchAllUUIDMetadataData : PNServiceData

// List of UUID metadata objects created for current subscribe key.
@property (nonatomic, readonly, strong) NSArray<PNUUIDMetadata *> *metadata;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of objects created for current subscribe key.
 *
 * Value will be 0 in case if PNUUIDTotalCountField not added to 'includeFields'
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Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Get metadata for all users (builder pattern)​

Method(s)​

objects()
    .allUUIDMetadata()
    .includeFields(PNUUIDFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(PNFetchAllUUIDMetadataCompletionBlock);
* required
ParameterDescription
includeFields
Type: PNUUIDFields
Bitfield of response fields. Supported: PNUUIDTotalCountField (number of UUID metadata records), PNUUIDCustomField (custom set during UUID metadata set), PNUUIDStatusField (status set during UUID metadata set), PNUUIDTypeField (type set during UUID metadata set). Default is PNUUIDTotalCountField (set 0 to reset).
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
sort
Type: NSArray
Sort by id, name, updated with asc/desc for sort direction (for example, {name: 'asc'}).
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Cursor-based pagination.
end
Type: NSString
Cursor-based pagination. Ignored if the start parameter is supplied.
block *
Type: PNFetchAllUUIDMetadataCompletionBlock
Associated metadata fetch completion handler block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().allUUIDMetadata()
    .start(@"<next from previous request>")
    .includeFields(PNUUIDCustomField)
    .includeCount(YES)
    .limit(40)
    .performWithCompletion(^(PNFetchAllUUIDMetadataResult *result, PNErrorStatus *status) {
        if (!status.isError) {
            /**
             * UUID metadata successfully fetched.
             * Result object has following information:
             *   result.data.metadata - List of fetched UUID metadata.
             *   result.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
             *   result.data.prev - Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
             *   result.data.totalCount - Total number of created UUID metadata.
             */
show all 24 lines

Response​

Response returned by the client for fetch all UUID metadata:

@interface PNFetchAllUUIDMetadataData : PNServiceData

// List of UUID metadata objects created for current subscribe key.
@property (nonatomic, readonly, strong) NSArray<PNUUIDMetadata *> *metadata;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of objects created for current subscribe key.
 *
 * Value will be 0 in case if PNUUIDTotalCountField not added to 'includeFields'
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Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Get user metadata​

Returns metadata for the specified UUID, optionally including the custom data object for each.

Method(s)​

To Get UUID Metadata you can use the following method(s) in the Objective-C SDK:

- (void)uuidMetadataWithRequest:(PNFetchUUIDMetadataRequest *)request 
                     completion:(PNFetchUUIDMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for fetching UUID metadata.
block *
Type: PNFetchUUIDMetadataCompletionBlock
Completion block.

PNFetchUUIDMetadataRequest​

* required
ParameterDescription
includeFields
Type: PNUUIDFields
Bitfield of response fields. Supported: PNUUIDCustomField (custom set during UUID metadata set), PNUUIDStatusField (status set during UUID metadata set), PNUUIDTypeField (type set during UUID metadata set).
uuid
Type: NSString
Create and configure fetch UUID metadata request. uuid - Identifier for metadata should be fetched. Will be set to current PubNub configuration uuid if nil is set.

Sample code​

PNFetchUUIDMetadataRequest *request = [PNFetchUUIDMetadataRequest requestWithUUID:@"uuid"];
// Add this request option, if returned metadata model should have value which has been set to
// 'custom' property.
request.includeFields = PNUUIDCustomField;

[self.client uuidMetadataWithRequest:request
                          completion:^(PNFetchUUIDMetadataResult *result, PNErrorStatus *status) {

    if (!status.isError) {
        /**
         * UUID metadata successfully fetched.
         * Fetched UUID metadata information available here: result.data.metadata
         */
    } else {
        /**
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Response​

Response returned by the client for fetch UUID metadata:

@interface PNFetchUUIDMetadataData : PNServiceData

// Requested UUID metadata object.
@property (nonatomic, nullable, readonly, strong) PNUUIDMetadata *metadata;

@end

@interface PNFetchUUIDMetadataResult : PNResult

// Fetch UUID metadata request processed information.
@property (nonatomic, readonly, strong) PNFetchUUIDMetadataData *data;

@end

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Get user metadata (builder pattern)​

Method(s)​

objects()
    .uuidMetadata()
    .uuid(NSString *)
    .includeFields(PNUUIDFields)
    .performWithCompletion(PNFetchUUIDMetadataCompletionBlock);
* required
ParameterDescription
uuid
Type: NSString
Identifier for which associated metadata should be fetched. Default: configured PubNub client uuid
includeFields
Type: PNUUIDFields
Bitfield of response fields. Supported: PNUUIDCustomField (custom set during UUID metadata set), PNUUIDStatusField (status set during UUID metadata set), PNUUIDTypeField (type set during UUID metadata set).
block *
Type: PNFetchUUIDMetadataCompletionBlock
Fetch UUID metadata request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().uuidMetadata()
    .uuid(@"uuid")
    .includeFields(PNUUIDCustomField)
    .performWithCompletion(^(PNFetchUUIDMetadataResult *result, PNErrorStatus *status) {
      if (!status.isError) {
          /**
           * UUID metadata successfully fetched.
           * Fetched UUID metadata information available here: result.data.metadata
           */
      } else {
          /**
           * Handle UUID metadata fetch error. Check 'category' property to find out possible issue
           * because of which request did fail.
           *
           * Request can be resent using: [status retry]
show all 18 lines

Response​

Response returned by the client for fetch UUID metadata:

@interface PNFetchUUIDMetadataData : PNServiceData

// Requested UUID metadata object.
@property (nonatomic, nullable, readonly, strong) PNUUIDMetadata *metadata;

@end

@interface PNFetchUUIDMetadataResult : PNResult

// Fetch UUID metadata request processed information.
@property (nonatomic, readonly, strong) PNFetchUUIDMetadataData *data;

@end

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Set user metadata​

Unsupported partial updates of custom metadata

The value of the custom metadata parameter sent in this method always overwrites the value stored on PubNub servers. If you want to add new custom data to an existing one, you must:

  1. Get the existing metadata and store it locally.
  2. Append the new custom metadata to the existing one.
  3. Set the entire updated custom object.

Set metadata for a UUID in the database, optionally including the custom data object for each.

Method(s)​

To Set UUID Metadata you can use the following method(s) in the Objective-C SDK:

- (void)setUUIDMetadataWithRequest:(PNSetUUIDMetadataRequest *)request 
                        completion:(nullable PNSetUUIDMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for setting UUID metadata.
block
Type: PNSetUUIDMetadataCompletionBlock
Set UUID metadata request completion block.

PNSetUUIDMetadataRequest​

* required
ParameterDescription
custom
Type: NSDictionary
Additional / complex attributes which should be associated with metadata. App Context filtering language doesn't support filtering by custom properties.
externalId
Type: NSString
Identifier from external service (database, auth service).
profileUrl
Type: NSString
URL at which profile available.
includeFields
Type: PNUUIDFields
Bitfield of response fields. Supported: PNUUIDCustomField (custom set during UUID metadata set), PNUUIDStatusField (status set during UUID metadata set), PNUUIDTypeField (type set during UUID metadata set).
email
Type: NSString
Email address.
name
Type: NSString
Name which should be stored in metadata associated with specified identifier.
uuid
Type: NSString
Create and configure set UUID metadata request. uuid - Identifier with which \c metadata is linked. Will be set to current PubNub configuration uuid if nil is set.
status
Type: NSString
The custom status of the user.
type
Type: NSString
The custom type of the user.
ifMatchesEtag
Type: NSString
The entity tag to be used to ensure updates only happen if the object hasn't been modified since it was read. Use the eTag you received from an applicable get metadata method to check against the server entity tag. If the eTags don't match, an HTTP 412 error is thrown.
API limits

To learn about the maximum length of parameters used to set user metadata, refer to REST API docs.

Sample code​

PNSetUUIDMetadataRequest *request = [PNSetUUIDMetadataRequest requestWithUUID:@"uuid"];
// With this option on, returned metadata model will have value which has been set to 'custom'
// property.
request.includeFields = PNUUIDCustomField;
request.custom = @{ @"age": @(39), @"status": @"Checking some stuff..." };
request.email = @"support@pubnub.com";
request.name = @"David";

[self.client setUUIDMetadataWithRequest:request completion:^(PNSetUUIDMetadataStatus *status) {
    if (!status.isError) {
        /**
         * UUID metadata successfully has been set.
         * UUID metadata information available here: status.data.metadata
         */
    } else {
show all 23 lines

Response​

Response returned by the client for set UUID metadata:

@interface PNSetUUIDMetadataData : PNServiceData

// Updated UUID metadata object.
@property (nonatomic, nullable, readonly, strong) PNUUIDMetadata *metadata;

@end

@interface PNSetUUIDMetadataStatus : PNAcknowledgmentStatus

// Set UUID metadata request processed information.
@property (nonatomic, readonly, strong) PNSetUUIDMetadataData *data;

@end

Set user metadata (builder pattern)​

Method(s)​

objects()
    .setUUIDMetadata()
    .uuid(NSString *)
    .name(NSString *)
    .externalId(NSString *)
    .profileUrl(NSString *)
    .custom(NSDictionary *)
    .email(NSString *)
    .includeFields(PNUUIDFields)
    .performWithCompletion(nullable PNSetUUIDMetadataCompletionBlock);
API limits

To learn about the maximum length of parameters used to set user metadata, refer to REST API docs.

* required
ParameterDescription
uuid
Type: NSString
Identifier with which new metadata should be associated. Default: configured PubNub client uuid
name
Type: NSString
Name which should stored in metadata associated with specified UUID.
externalId
Type: NSString
External identifier (database, auth service) associated with specified UUID.
profileUrl
Type: NSString
External URL with information for specified UUID representation.
custom
Type: NSDictionary
Additional information which should be stored in metadata associated with specified UUID. App Context filtering language doesn't support filtering by custom properties.
email
Type: NSString
Email address which should be stored in metadata associated with specified UUID.
includeFields
Type: PNUUIDFields
Bitfield of response fields. Supported: PNUUIDCustomField (custom set during UUID metadata set), PNUUIDStatusField (status set during UUID metadata set), PNUUIDTypeField (type set during UUID metadata set).
block
Type: PNSetUUIDMetadataCompletionBlock
Set UUID metadata request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().setUUIDMetadata()
    .uuid(@"uuid")
    .name(@"Serhii")
    .externalId(@"93FVfHUAf4RLu79J7Q3ejLVu")
    .profileUrl(@"https://pubnub.com")
    .custom(@{ @"age": @(36) })
    .email(@"support@pubnub.com")
    .includeFields(PNUUIDCustomField)
    .performWithCompletion(^(PNSetUUIDMetadataStatus *status) {
        if (!status.isError) {
            /**
             * UUID metadata successfully has been set.
             * UUID metadata information available here: status.data.metadata
             */
        } else {
show all 23 lines

Response​

Response returned by the client for set UUID metadata:

@interface PNSetUUIDMetadataData : PNServiceData

// Updated UUID metadata object.
@property (nonatomic, nullable, readonly, strong) PNUUIDMetadata *metadata;

@end

@interface PNSetUUIDMetadataStatus : PNAcknowledgmentStatus

// Set UUID metadata request processed information.
@property (nonatomic, readonly, strong) PNSetUUIDMetadataData *data;

@end

Remove user metadata​

Removes the metadata from a specified UUID.

Method(s)​

To Remove UUID Metadata you can use the following method(s) in the Objective-C SDK:

- (void)removeUUIDMetadataWithRequest:(PNRemoveUUIDMetadataRequest *)request 
                           completion:(nullable PNRemoveUUIDMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for removing UUID metadata.
block
Type: PNRemoveUUIDMetadataCompletionBlock
Remove UUID metadata request completion block.

PNRemoveUUIDMetadataRequest​

* required
ParameterDescription
uuid
Type: NSString
Create and configure delete user request. identifier - Create and configure remove UUID metadata request. Will be set to current PubNub configuration uuid if nil is set.

Sample code​

PNRemoveUUIDMetadataRequest *request = [PNRemoveUUIDMetadataRequest requestWithUUID:@"uuid"];

[self.client removeUUIDMetadataWithRequest:request completion:^(PNAcknowledgmentStatus *status) {
    if (!status.isError) {
        // UUID metadata successfully removed.
    } else {
        /**
         * Handle UUID metadata remove error. Check 'category' property to find out possible
         * issue because of which request did fail.
         *
         * Request can be resent using: [status retry]
         */
    }
}];

Response​

Response returned by the client for remove UUID metadata:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNAcknowledgmentStatus : PNErrorStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Remove user metadata (builder pattern)​

Method(s)​

objects()
    .removeUUIDMetadata()
    .uuid(NSString *)
    .performWithCompletion(PNFetchUUIDMetadataCompletionBlock);

* required
ParameterDescription
uuid
Type: NSString
Identifier for which associated metadata should be removed. Default: configured PubNub client uuid
block
Type: PNRemoveUUIDMetadataCompletionBlock
Remove UUID metadata request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().removeUUIDMetadata()
    .uuid(@"uuid")
    .performWithCompletion(^(PNAcknowledgmentStatus *status) {
        if (!status.isError) {
             // User successfully deleted.
        } else {
            /**
             * Handle user delete error. Check 'category' property to find out possible issue
             * because of which request did fail.
             *
             * Request can be resent using: [status retry]
             */
        }
    });

Response​

Response returned by the client for remove UUID metadata:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNAcknowledgmentStatus : PNErrorStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Channel​

Get metadata for all channels​

Returns a paginated list of Channel Metadata objects, optionally including the custom data object for each.

Method(s)​

To Get All Channel Metadata you can use the following method(s) in the Objective-C SDK:

- (void)allChannelsMetadataWithRequest:(PNFetchAllChannelsMetadataRequest *)request 
                            completion:(PNFetchAllChannelsMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for fetching all channel metadata.
block *
Type: PNFetchAllChannelsMetadataCompletionBlock
Completion block.

PNFetchAllChannelsMetadataRequest​

* required
ParameterDescription
includeFields
Type: PNChannelFields
Bitfield of response fields. Supported: PNChannelTotalCountField (number of channel metadata records), PNChannelCustomField (custom set during channel metadata set), PNChannelStatusField (status set during channel metadata set), PNChannelTypeField (type set during channel metadata set). Default is PNChannelTotalCountField (set 0 to reset).
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Cursor-based pagination. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

PNFetchAllChannelsMetadataRequest *request = [PNFetchAllChannelsMetadataRequest new];
request.start = @"<next from previous request>";
// Add this request option, if returned metadata models should have value which has been set to
// 'custom' property.
request.includeFields = PNUUIDCustomField | PNUUIDTotalCountField;
request.limit = 40;

[self.client allChannelsMetadataWithRequest:request
                                 completion:^(PNFetchAllChannelsMetadataResult *result, PNErrorStatus *status) {
    if (!status.isError) {
        /**
         * Channels metadata successfully fetched.
         * Result object has following information:
         *   result.data.metadata - List of fetched channels metadata.
         *   result.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
show all 26 lines

Response​

Response returned by the client for fetch all UUID metadata:

@interface PNFetchAllChannelsMetadataData : PNServiceData

// List of channels metadata objects created for current subscribe key.
@property (nonatomic, readonly, strong) NSArray<PNChannelMetadata *> *metadata;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of objects created for current subscribe key.
 *
 * Value will be 0 in case if PNChannelTotalCountField not added to 'includeFields'
show all 27 lines

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Get metadata for all channels (builder pattern)​

Method(s)​

objects()
    .allChannelsMetadata()
    .includeFields(PNChannelFields)
    .includeCount(BOOL)
    .filter(NSString)
    .sort(NSArray)
    .limit(NSUInteger)
    .start(NSString)
    .end(NSString)
    .performWithCompletion(PNFetchChannelMetadataCompletionBlock);
* required
ParameterDescription
includeFields
Type: PNChannelFields
Bitfield of response fields. Supported: PNChannelTotalCountField (number of channel metadata records), PNChannelCustomField (custom set during channel metadata set), PNChannelStatusField (status set during channel metadata set), PNChannelTypeField (type set during channel metadata set). Default is PNChannelTotalCountField (set 0 to reset).
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
sort
Type: NSArray
Sort by id, name, updated with asc/desc for sort direction (for example, {name: 'asc'}).
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block *
Type: PNFetchAllChannelsMetadataCompletionBlock
Fetch all UUID metadata request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().allChannelsMetadata()
    .start(@"<next from previous request>")
    .includeFields(PNChannelCustomField)
    .includeCount(YES)
    .limit(40)
    .performWithCompletion(^(PNFetchAllChannelsMetadataResult *result, PNErrorStatus *status) {
        if (!status.isError) {
            /**
             * Channels metadata successfully fetched.
             * Result object has following information:
             *   result.data.metadata - List of fetched channels metadata.
             *   result.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
             *   result.data.prev - Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
             *   result.data.totalCount - Total number of associated channel metadata.
        } else {
show all 23 lines

Response​

Response returned by the client for fetch all UUID metadata:

@interface PNFetchAllChannelsMetadataData : PNServiceData

// List of channels metadata objects created for current subscribe key.
@property (nonatomic, readonly, strong) NSArray<PNChannelMetadata *> *metadata;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of objects created for current subscribe key.
 *
 * Value will be 0 in case if PNChannelTotalCountField not added to 'includeFields'
show all 27 lines

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Get channel metadata​

Returns metadata for the specified Channel, optionally including the custom data object for each.

Method(s)​

To Get Channel Metadata you can use the following method(s) in the Objective-C SDK:

- (void)channelMetadataWithRequest:(PNFetchChannelMetadataRequest *)request 
                        completion:(PNFetchChannelMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for fetching channel metadata.
block *
Type: PNFetchChannelMetadataCompletionBlock
Completion block.

PNFetchChannelMetadataRequest​

* required
ParameterDescription
includeFields
Type: PNChannelFields
Bitfield of response fields. Supported: PNChannelCustomField (custom set during channel metadata set), PNChannelStatusField (status set during channel metadata set), PNChannelTypeField (type set during channel metadata set).
channel
Type: NSString
Create and configure fetch channel metadata request. channel - Name of channel for which metadata should be fetched.

Sample code​

PNFetchChannelMetadataRequest *request = [PNFetchChannelMetadataRequest requestWithChannel:@"channel"];
// Add this request option, if returned metadata model should have value which has been set to
// 'custom' property.
request.includeFields = PNChannelCustomField;

[self.client channelMetadataWithRequest:request
                             completion:^(PNFetchChannelsMetadataResult *result, PNErrorStatus *status) {

    if (!status.isError) {
        /**
         * Channel metadata successfully fetched.
         * Channel metadata information available here: result.data.metadata
         */
    } else {
        /**
show all 22 lines

Response​

Response returned by the client for fetch channel metadata:

@interface PNFetchChannelMetadataData : PNServiceData

// Requested channel metadata object.
@property (nonatomic, nullable, readonly, strong) PNChannelMetadata *metadata;

@end

@interface PNFetchChannelsMetadataResult : PNResult

// Fetch channel metadata request processed information.
@property (nonatomic, readonly, strong) PNFetchChannelMetadataData *data;

@end

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Get channel metadata (builder pattern)​

Method(s)​

objects()
    .channelMetadata(NSString *)
    .includeFields(PNChannelFields)
    .performWithCompletion(PNFetchChannelMetadataCompletionBlock);
* required
ParameterDescription
channel *
Type: NSString
Name of channel for which associated metadata should be fetched.
includeFields
Type: NSString
Bitfield set to fields which should be returned with response. Supported fields:
  • PNChannelCustomField - include field with additional information from metadata which has been used during channel metadata set requests.
  • PNChannelStatusField - include field with metadata status which has been used during channel metadata set requests
  • PNChannelTypeField - Include field with metadata type which has been used during channel metadata set requests.
block *
Type: PNFetchChannelMetadataCompletionBlock
Fetch channel metadata request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().channelMetadata(@"channel")
    .includeFields(PNChannelCustomField)
    .performWithCompletion(^(PNFetchChannelsMetadataResult *result, PNErrorStatus *status) {
        if (!status.isError) {
            /**
             * Channel metadata successfully fetched.
             * Channel metadata information available here: result.data.metadata
             */
        } else {
            /**
             * Handle channel metadata fetch error. Check 'category' property to find out possible
             * issue because of which request did fail.
             *
             * Request can be resent using: [status retry]
             */
show all 17 lines

Response​

Response returned by the client for fetch channel metadata:

@interface PNFetchChannelMetadataData : PNServiceData

// Requested channel metadata object.
@property (nonatomic, nullable, readonly, strong) PNChannelMetadata *metadata;

@end

@interface PNFetchChannelsMetadataResult : PNResult

// Fetch channel metadata request processed information.
@property (nonatomic, readonly, strong) PNFetchChannelMetadataData *data;

@end

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Set channel metadata​

Unsupported partial updates of custom metadata

The value of the custom metadata parameter sent in this method always overwrites the value stored on PubNub servers. If you want to add new custom data to an existing one, you must:

  1. Get the existing metadata and store it locally.
  2. Append the new custom metadata to the existing one.
  3. Set the entire updated custom object.

Set metadata for a Channel in the database, optionally including the custom data object for each.

Method(s)​

To Set Channel Metadata you can use the following method(s) in the Objective-C SDK:

- (void)setChannelMetadataWithRequest:(PNSetChannelMetadataRequest *)request 
                           completion:(nullable PNSetChannelMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for setting channel metadata.
block
Type: PNSetChannelMetadataCompletionBlock
Set channel metadata request completion block.

PNSetChannelMetadataRequest​

* required
ParameterDescription
custom
Type: NSDictionary
Additional / complex attributes which should be stored in metadata associated with specified channel. App Context filtering language doesn't support filtering by custom properties.
information
Type: NSString
Description which should be stored in metadata associated with specified channel.
includeFields
Type: PNChannelFields
Bitfield of response fields. Supported: PNChannelCustomField (custom set during channel metadata set), PNChannelStatusField (status set during channel metadata set), PNChannelTypeField (type set during channel metadata set).
name
Type: NSString
Name which should be stored in metadata associated with specified channel.
channel
Type: NSString
Create and configure set channel metadata request. channel - Name of channel for which metadata should be set.
status
Type: NSString
The custom status of the channel.
type
Type: NSString
The custom type of the channel.
ifMatchesEtag
Type: NSString
The entity tag to be used to ensure updates only happen if the object hasn't been modified since it was read. Use the eTag you received from an applicable get metadata method to check against the server entity tag. If the eTags don't match, an HTTP 412 error is thrown.
API limits

To learn about the maximum length of parameters used to set channel metadata, refer to REST API docs.

Sample code​

PNSetChannelMetadataRequest *request = [PNSetChannelMetadataRequest requestWithChannel:@"channel"];
// Add this request option, if returned metadata model should have value which has been set to
// 'custom' property.
request.includeFields = PNChannelCustomField;
request.custom = @{ @"responsibilities": @"Manage tests", @"status": @"offline" };
request.name = @"Updated channel name";

[self.client setChannelMetadataWithRequest:request completion:^(PNSetChannelMetadataStatus *status) {
    if (!status.isError) {
        /**
         * Channel metadata successfully has been set.
         * Channel metadata information available here: status.data.metadata
         */
    } else {
        /**
show all 22 lines

Response​

Response returned by the client for set channel metadata:

@interface PNSetChannelMetadataData : PNServiceData

// Associated channel's metadata object.
@property (nonatomic, nullable, readonly, strong) PNChannelMetadata *metadata;

@end

@interface PNSetChannelMetadataStatus : PNAcknowledgmentStatus

// Set channel metadata request processed information.
@property (nonatomic, readonly, strong) PNSetChannelMetadataData *data;

@end

Other examples​

Iteratively update existing metadata​
#import <Foundation/Foundation.h>
#import <PubNub/PubNub.h>

// Assume 'client' is an initialized PubNub instance as shown in previous examples.
// PubNub *client = [PubNub clientWithConfiguration:config];

NSString *channel = @"demo_example";
NSString *initialName = @"Initial Channel Name";
NSString *initialDescription = @"Initial channel description.";
NSDictionary *initialCustom = @{ @"location": @"default_location" };

// First, set some initial metadata for the channel
PNSetChannelMetadataRequest *initialSetRequest = [PNSetChannelMetadataRequest requestWithChannel:channel];
initialSetRequest.name = initialName;
initialSetRequest.information = initialDescription;
show all 65 lines

Set channel metadata (builder pattern)​

Method(s)​

objects()
    .setChannelMetadata(NSString *)
    .includeFields(PNChannelFields)
    .channel(NSString)
    .name(NSString)
    .information(NSString)
    .custom(NSDictionary)
    .performWithCompletion(PNFetchChannelMetadataCompletionBlock);
API limits

To learn about the maximum length of parameters used to set channel metadata, refer to REST API docs.

* required
ParameterDescription
channel *
Type: NSString
Name of channel with which new metadata should be associated.
name
Type: NSString
Name which should stored in metadata associated with specified channel.
information
Type: NSString
Description which should be stored in metadata associated with specified channel.
custom
Type: NSDictionary
Additional information which should be stored in metadata associated with specified channel. App Context filtering language doesn't support filtering by custom properties.
includeFields
Type: PNChannelFields
Bitfield of response fields. Supported: PNChannelCustomField (custom set during channel metadata set), PNChannelStatusField (status set during channel metadata set), PNChannelTypeField (type set during channel metadata set).
block
Type: PNSetChannelMetadataCompletionBlock
Set channel metadata request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().setChannelMetadata(@"channel")
    .name(@"Admin")
    .information(@"Administrative channel")
    .custom(@{ @"responsibilities": @"Manage access to protected resources" })
    .includeFields(PNChannelCustomField)
    .performWithCompletion(^(PNSetChannelMetadataStatus *status) {
      if (!status.isError) {
          /**
           * Channel metadata successfully has been set.
           * Channel metadata information available here: status.data.metadata
           */
      } else {
          /**
           * Handle channel metadata update error. Check 'category' property to find out possible
           * issue because of which request did fail.
show all 20 lines

Response​

Response returned by the client for set channel metadata:

@interface PNSetChannelMetadataData : PNServiceData

// Associated channel's metadata object.
@property (nonatomic, nullable, readonly, strong) PNChannelMetadata *metadata;

@end

@interface PNSetChannelMetadataStatus : PNAcknowledgmentStatus

// Set channel metadata request processed information.
@property (nonatomic, readonly, strong) PNSetChannelMetadataData *data;

@end

Remove channel metadata​

Removes the metadata from a specified channel.

Method(s)​

To Remove Channel Metadata you can use the following method(s) in the Objective-C SDK:

- (void)removeChannelMetadataWithRequest:(PNRemoveChannelMetadataRequest *)request 
                              completion:(nullable PNRemoveChannelMetadataCompletionBlock)block;
* required
ParameterDescription
request *
Request object for removing channel metadata.
block
Type: PNRemoveChannelMetadataCompletionBlock
Remove channel metadata request completion block.

PNRemoveChannelMetadataRequest​

* required
ParameterDescription
channel
Type: NSString
Create and configure remove channel metadata request. channel - Name of channel for which metadata should be removed.

Sample code​

PNRemoveChannelMetadataRequest *request = [PNRemoveChannelMetadataRequest requestWithChannel:@"channel"];

[self.client removeChannelMetadataWithRequest:request completion:^(PNAcknowledgmentStatus *status) {
    if (!status.isError) {
        // Channel metadata successfully removed.
    } else {
        /**
         * Handle channel metadata remove error. Check 'category' property to find out possible
         * issue because of which request did fail.
         *
         * Request can be resent using: [status retry]
         */
    }
}];

Response​

Response returned by the client for remove channel metadata:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNAcknowledgmentStatus : PNErrorStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Remove channel metadata (builder pattern)​

Method(s)​

objects()
    .removeChannelMetadata(NSString *)
    .performWithCompletion(nullable PNRemoveChannelMetadataCompletionBlock);
* required
ParameterDescription
channel *
Type: NSString
Name of channel for which associated metadata should be removed.
block
Type: PNRemoveChannelMetadataCompletionBlock
Remove channel metadata request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().removeChannelMetadata(@"channel")
    .performWithCompletion(^(PNAcknowledgmentStatus *status) {
        if (!status.isError) {
            // Channel metadata successfully removed.
        } else {
            /**
             * Handle channel metadata remove error. Check 'category' property to find out possible
             * issue because of which request did fail.
             *
             * Request can be resent using: [status retry]
             */
        }
    });

Response​

Response returned by the client for remove channel metadata:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNAcknowledgmentStatus : PNErrorStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Channel memberships​

Get channel memberships​

The method returns a list of channel memberships for a user. This method doesn't return a user's subscriptions.

Method(s)​

To Get Memberships you can use the following method(s) in the Objective-C SDK:

- (void)membershipsWithRequest:(PNFetchMembershipsRequest *)request 
                    completion:(PNFetchMembershipsCompletionBlock)block;
* required
ParameterDescription
request *
Request object for fetching UUID memberships.
block *
Type: PNFetchMembershipsCompletionBlock
Completion block.

PNFetchMembershipsRequest​

* required
ParameterDescription
sort
Type: NSArray<NSString *>
Sort by id, name, updated with asc/desc for sort direction (for example, {name: 'asc'}).
includeFields
Type: PNMembershipFields
Bitfield of response fields. Supported: PNMembershipsTotalCountField (number of memberships), PNMembershipCustomField (custom set during membership set), PNMembershipStatusField (status set during membership set), PNMembershipTypeField (type set during membership set), PNMembershipChannelField (include channel metadata), PNMembershipChannelCustomField (channel custom set during channel metadata set), PNMembershipChannelStatusField (channel status set during channel metadata set), PNMembershipChannelTypeField (channel type set during channel metadata set). Default is PNMembershipsTotalCountField (set 0 to reset).
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
start
Type: NSString
Cursor-based pagination.
end
Type: NSString
Cursor-based pagination. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

PNFetchMembershipsRequest *request = [PNFetchMembershipsRequest requestWithUUID:@"uuid"];
request.start = @"<next from previous request>";
// Add this request option, if returned membership models should have value which has been set to
// 'custom' and 'channel' properties.
request.includeFields = PNMembershipCustomField | PNMembershipChannelField | PNMembershipsTotalCountField;
request.limit = 40;

[self.client membershipsWithRequest:request
                         completion:^(PNFetchMembershipsResult *result, PNErrorStatus *status) {

    if (!status.isError) {
        /**
         * UUID's memberships successfully fetched.
         * Result object has following information:
         *   result.data.memberships - List of UUID's memberships.
show all 28 lines

Response​

Response returned by the client for fetch memberships:

@interface PNFetchMembershipsData : PNServiceData

// List of fetched memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of members created for current subscribe key.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Get channel memberships (builder pattern)​

Method(s)​

objects()
    .memberships()
    .uuid(NSString *)
    .includeFields(PNMembershipFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(PNFetchMembershipsCompletionBlock);
* required
ParameterDescription
uuid
Type: NSString
Name of channel from which members should be fetched.
includeFields
Type: PNMembershipFields
Bitfield of response fields. Supported: PNMembershipsTotalCountField (number of memberships), PNMembershipCustomField (custom set during membership set), PNMembershipStatusField (status set during membership set), PNMembershipTypeField (type set during membership set), PNMembershipChannelField (include channel metadata), PNMembershipChannelCustomField (channel custom set during channel metadata set), PNMembershipChannelStatusField (channel status set during channel metadata set), PNMembershipChannelTypeField (channel type set during channel metadata set). Default is PNMembershipsTotalCountField (set 0 to reset).
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block *
Type: PNFetchMembershipsCompletionBlock
Fetch UUID's memberships request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().memberships()
    .uuid(@"uuid")
    .includeCount(YES)
    .limit(40)
    .includeFields(PNMembershipCustomField | PNMembershipChannelField)
    .performWithCompletion(^(PNFetchMembershipsResult *result, PNErrorStatus *status) {
        if (!status.isError) {
            /**
             * UUID's memberships successfully fetched.
             * Result object has following information:
             *   result.data.memberships - List of UUID's memberships.
             *   result.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
             *   result.data.prev - Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
             *   result.data.totalCount - Total number of UUID's memberships.
             */
show all 24 lines

Response​

Response returned by the client for fetch memberships:

@interface PNFetchMembershipsData : PNServiceData

// List of fetched memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of members created for current subscribe key.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Set channel memberships​

Set channel memberships for a UUID.

Method(s)​

To Set Memberships you can use the following method(s) in the Objective-C SDK:

- (void)setMembershipsWithRequest:(PNSetMembershipsRequest *)request 
                       completion:(nullable PNManageMembershipsCompletionBlock)block;
* required
ParameterDescription
request *
Request object for setting UUID memberships.
block
Type: PNManageMembershipsCompletionBlock
Set UUID's memberships request completion block.

PNSetMembershipsRequest​

* required
ParameterDescription
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
includeFields
Type: PNMembershipFields
Bitfield set to fields which should be returned with response. Supported fields:
  • PNMembershipsTotalCountField - include how many memberships UUID has.
  • PNMembershipCustomField - include field with additional information from metadata which has been associated with UUID during membership set requests.
  • PNMembershipStatusField - include field with metadata status which has been associated with UUID during membership set requests.
  • PNMembershipTypeField - include field with metadata type which has been associated with UUID during membership set requests.
  • PNMembershipChannelField - include channel's metadata into response (not only name).
  • PNMembershipChannelCustomField - include channel's additional information which has been used during channel metadata set requests.
  • PNMembershipChannelStatusField - include channel's status which has been used during channel metadata set requests.
  • PNMembershipChannelTypeField - include channel's type which has been used during channel metadata set requests.
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
API limits

To learn about the maximum length of parameters used to set channel membership metadata, refer to REST API docs.

Sample code​

NSArray<NSDictionary *> *channels = @[
  @{ 
    @"channel": @"channel1", 
    @"status": @"active",
    @"type": @"public", 
    @"custom": @{ @"role": @"moderator" } 
  }
];

PNSetMembershipsRequest *request = [PNSetMembershipsRequest requestWithUUID:@"uuid"
                                                                   channels:channels];
// Add this request option, if returned membership models should have value which has been set to
// 'custom' and 'channel' properties.
request.includeFields = PNMembershipCustomField | PNMembershipChannelField | PNMembershipsTotalCountField;
request.limit = 40;
show all 35 lines

Response​

Response returned by the client for set memberships:

@interface PNManageMembershipsData : PNServiceData

// List of existing memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Set channel memberships (builder pattern)​

Method(s)​

objects()
    .setMemberships()
    .uuid(NSString *)
    .channels(NSArray<NSDictionary *> *)
    .includeFields(PNMembershipFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(nullable PNManageMembershipsCompletionBlock);
API limits

To learn about the maximum length of parameters used to set channel membership metadata, refer to REST API docs.

* required
ParameterDescription
uuid
Type: NSString
Identifier for which memberships should be set. Default: configured PubNub client uuid
channels
Type: NSArray
List of channels for which metadata associated with each of them in context of UUID should be set. Each entry is dictionary with channel and optional custom fields. custom should be dictionary with simple objects: NSString and NSNumber.
includeFields
Type: PNMembershipFields
Bitfield set to fields which should be returned with response. Supported fields:
  • PNMembershipsTotalCountField - include how many memberships UUID has.
  • PNMembershipCustomField - include field with additional information from metadata which has been associated with UUID during membership set requests.
  • PNMembershipStatusField - include field with metadata status which has been associated with UUID during membership set requests.
  • PNMembershipTypeField - include field with metadata type which has been associated with UUID during membership set requests.
  • PNMembershipChannelField - include channel's metadata into response (not only name).
  • PNMembershipChannelCustomField - include channel's additional information which has been used during channel metadata set requests.
  • PNMembershipChannelStatusField - include channel's status which has been used during channel metadata set requests.
  • PNMembershipChannelTypeField - include channel's type which has been used during channel metadata set requests.
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block
Type: PNManageMembershipsCompletionBlock
Set UUID's memberships request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

NSArray<NSDictionary *> *channels = @[
  @{ 
    @"channel": @"channel1", 
    @"status": @"active",
    @"type": @"public", 
    @"custom": @{ @"role": @"moderator" } 
  }
];

self.client.objects().setMemberships()
    .uuid(@"uuid")
    .channels(channels)
    .includeCount(YES)
    .limit(40)
    .includeFields(NMembershipCustomField | PNMembershipChannelField)
show all 34 lines

Response​

Response returned by the client for set memberships:

@interface PNManageMembershipsData : PNServiceData

// List of existing memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Remove channel memberships​

Remove channel memberships for a UUID.

Method(s)​

To Remove Memberships you can use the following method(s) in the Objective-C SDK:

- (void)removeMembershipsWithRequest:(PNRemoveMembershipsRequest *)request 
                          completion:(nullable PNManageMembershipsCompletionBlock)block;
* required
ParameterDescription
request *
Request object for removing UUID memberships.
block
Type: PNManageMembershipsCompletionBlock
Remove UUID's memberships request completion block.

PNRemoveMembershipsRequest​

* required
ParameterDescription
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
includeFields
Type: PNMembershipFields
Bitfield set to fields which should be returned with response. Supported fields:
  • PNMembershipsTotalCountField - include how many memberships UUID has.
  • PNMembershipCustomField - include field with additional information from metadata which has been associated with UUID during membership set requests.
  • PNMembershipStatusField - include field with metadata status which has been associated with UUID during membership set requests.
  • PNMembershipTypeField - include field with metadata type which has been associated with UUID during membership set requests.
  • PNMembershipChannelField - include channel's metadata into response (not only name).
  • PNMembershipChannelCustomField - include channel's additional information which has been used during channel metadata set requests.
  • PNMembershipChannelStatusField - include channel's status which has been used during channel metadata set requests.
  • PNMembershipChannelTypeField - include channel's type which has been used during channel metadata set requests.
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

NSArray<NSString *> *channels = @[@"channel1", @"channel2"];
PNRemoveMembershipsRequest *request = [PNRemoveMembershipsRequest requestWithUUID:@"uuid"
                                                                         channels:channels];
// Add this request option, if returned membership models should have value which has been set to
// 'custom' and 'channel' properties.
request.includeFields = PNMembershipCustomField | PNMembershipChannelField | PNMembershipsTotalCountField;
request.limit = 40;

[self.client removeMembershipsWithRequest:request
                               completion:^(PNManageMembershipsStatus *status) {

    if (!status.isError) {
        /**
         * UUID's memberships successfully removed.
         * Result object has following information:
show all 29 lines

Response​

Response returned by the client for remove memberships:

@interface PNManageMembershipsData : PNServiceData

// List of existing memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Remove channel memberships (builder pattern)​

Method(s)​

objects()
    .removeMemberships()
    .uuid(NSString *)
    .channels(NSArray<NSString *> *)
    .includeFields(PNMemberFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(nullable PNManageMembershipsCompletionBlock);
* required
ParameterDescription
uuid
Type: NSString
Identifier for which memberships should be removed. Default: configured PubNub client uuid
channels
Type: NSArray
List of channels from which UUID should be removed as member.
includeFields
Type: PNMembershipFields
Bitfield set to fields which should be returned with response. Supported fields:
  • PNMembershipsTotalCountField - include how many memberships UUID has.
  • PNMembershipCustomField - include field with additional information from metadata which has been associated with UUID during membership set requests.
  • PNMembershipStatusField - include field with metadata status which has been associated with UUID during membership set requests.
  • PNMembershipTypeField - include field with metadata type which has been associated with UUID during membership set requests.
  • PNMembershipChannelField - include channel's metadata into response (not only name).
  • PNMembershipChannelCustomField - include channel's additional information which has been used during channel metadata set requests.
  • PNMembershipChannelStatusField - include channel's status which has been used during channel metadata set requests.
  • PNMembershipChannelTypeField - include channel's type which has been used during channel metadata set requests.
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block
Type: PNManageMembershipsCompletionBlock
Remove UUID's memberships request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().removeMemberships()
    .uuid(@"uuid")
    .channels(@[@"channel1", @"channel2"])
    .includeCount(YES)
    .limit(40)
    .includeFields(PNMembershipCustomField | PNMembershipChannelField)
    .performWithCompletion(^(PNManageMembershipsStatus *status) {
        if (!status.isError) {
            /**
             * UUID's memberships successfully removed.
             * Result object has following information:
             *   status.data.memberships - List of UUID's existing memberships.
             *   status.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
             *   status.data.prev - Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
             *   status.data.totalCount - Total number of UUID's memberships.
show all 25 lines

Response​

Response returned by the client for remove memberships:

@interface PNManageMembershipsData : PNServiceData

// List of existing memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Manage channel memberships​

The method Set and Remove channel memberships for a user.

Method(s)​

To Manage Memberships you can use the following method(s) in the Objective-C SDK:

- (void)manageMembershipsWithRequest:(PNManageMembershipsRequest *)request 
                          completion:(nullable PNManageMembershipsCompletionBlock)block;
* required
ParameterDescription
request *
Request object for managing UUID memberships.
block
Type: PNManageMembershipsCompletionBlock
Manage UUID's memberships request completion block.

PNManageMembershipsRequest​

* required
ParameterDescription
setChannels
Type: NSArray<NSDictionary *>
List of channels within which UUID should be set as member. Each entry is dictionary with channel and optional custom fields. custom should be dictionary with simple objects: NSString and NSNumber.
removeChannels
Type: NSArray<NSString *>
List of channels from which UUID should be removed as member.
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
includeFields
Type: PNMembershipFields
Bitfield set to fields which should be returned with response. Supported fields:
  • PNMembershipsTotalCountField - include how many memberships UUID has.
  • PNMembershipCustomField - include field with additional information from metadata which has been associated with UUID during membership set requests.
  • PNMembershipStatusField - include field with metadata status which has been associated with UUID during membership set requests.
  • PNMembershipTypeField - include field with metadata type which has been associated with UUID during membership set requests.
  • PNMembershipChannelField - include channel's metadata into response (not only name).
  • PNMembershipChannelCustomField - include channel's additional information which has been used during channel metadata set requests.
  • PNMembershipChannelStatusField - include channel's status which has been used during channel metadata set requests.
  • PNMembershipChannelTypeField - include channel's type which has been used during channel metadata set requests.
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

PNManageMembershipsRequest *request = [PNManageMembershipsRequest requestWithUUID:@"uuid"];
request.setChannels = @[
    @{ @"channel": @"channel1", @"custom": @{ @"role": @"moderator" } }
];
request.removeChannels = @[@"channel3", @"channel4"];
// Add this request option, if returned membership models should have value which has been set to
// 'custom' and 'channel' properties.
request.includeFields = PNMembershipCustomField | PNMembershipChannelField | PNMembershipsTotalCountField;
request.limit = 40;

[self.client manageMembershipsWithRequest:request
                               completion:^(PNManageMembershipsStatus *status) {

    if (!status.isError) {
        /**
show all 31 lines

Response​

Response returned by the client for manage memberships:

@interface PNManageMembershipsData : PNServiceData

// List of existing memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Manage channel memberships (builder pattern)​

Method(s)​

objects()
    .manageMemberships()
    .uuid(NSString *)
    .set(NSArray<NSDictionary *> *)
    .remove(NSArray<NSString *> *)
    .includeFields(PNMemberFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(nullable PNManageMembershipsCompletionBlock);
* required
ParameterDescription
uuid
Type: NSString
Identifier for which memberships should be set. Default: configured PubNub client uuid
set
Type: NSArray
List of channels for which metadata associated with each of them in context of UUID should be set. Each entry is dictionary with channel and optional custom fields. custom should be dictionary with simple objects: NSString and NSNumber.
remove
Type: NSArray
List of channels from which UUID should be removed as member.
includeFields
Type: PNMembershipFields
Bitfield set to fields which should be returned with response. Supported fields:
  • PNMembershipsTotalCountField - include how many memberships UUID has.
  • PNMembershipCustomField - include field with additional information from metadata which has been associated with UUID during membership set requests.
  • PNMembershipStatusField - include field with metadata status which has been associated with UUID during membership set requests.
  • PNMembershipTypeField - include field with metadata type which has been associated with UUID during membership set requests.
  • PNMembershipChannelField - include channel's metadata into response (not only name).
  • PNMembershipChannelCustomField - include channel's additional information which has been used during channel metadata set requests.
  • PNMembershipChannelStatusField - include channel's status which has been used during channel metadata set requests.
  • PNMembershipChannelTypeField - include channel's type which has been used during channel metadata set requests.
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block
Type: PNManageMembershipsCompletionBlock
Manage UUID's memberships request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

NSArray<NSDictionary *> *setChannels = @[
    @{ @"channel": @"channel1", @"custom": @{ @"role": @"moderator" } }
];
NSArray<NSString *> *removeChannels = @[@"channel3", @"channel4"];

self.client.objects().manageMemberships()
    .uuid(@"uuid")
    .set(setChannels)
    .remove(removeChannels)
    .includeCount(YES)
    .limit(40)
    .includeFields(PNMembershipCustomField | PNMembershipChannelField)
    .performWithCompletion(^(PNManageMembershipsStatus *status) {
        if (!status.isError) {
            /**
show all 31 lines

Response​

Response returned by the client for manage memberships:

@interface PNManageMembershipsData : PNServiceData

// List of existing memberships.
@property (nonatomic, readonly, strong) NSArray<PNMembership *> *memberships;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNMembershipsTotalCountField not added to 'includeFields'
show all 28 lines

Channel members​

Get channel members​

The method returns a list of members in a channel. The list will include user metadata for members that have additional metadata stored in the database.

Method(s)​

To Get Channel Members you can use the following method(s) in the Objective-C SDK:

- (void)channelMembersWithRequest:(PNFetchChannelMembersRequest *)request 
                       completion:(PNFetchChannelMembersCompletionBlock)block;
* required
ParameterDescription
request *
Request object for fetching channel members.
block *
Type: PNFetchChannelMembersCompletionBlock
Completion block.

PNFetchChannelMembersRequest​

* required
ParameterDescription
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

PNFetchChannelMembersRequest *request = [PNFetchChannelMembersRequest requestWithChannel:@"channel"];
request.start = @"<next from previous request>";
// Add this request option, if returned member models should have value which has been set to
// 'custom' and 'uuid' properties.
request.includeFields = PNChannelMemberCustomField | PNChannelMemberUUIDField | PNChannelMembersTotalCountField;
request.limit = 40;

[self.client channelMembersWithRequest:request
                            completion:^(PNFetchChannelMembersResult *result, PNErrorStatus *status) {

    if (!status.isError) {
        /**
         * Channel's members successfully fetched.
         * Result object has following information:
         *   result.data.members - List of channel's members.
show all 28 lines

Response​

Response returned by the client for fetch members:

@interface PNFetchChannelMembersData : PNServiceData

// List of fetched members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of members created for current subscribe key.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Get channel members (builder pattern)​

Method(s)​

objects()
    .channelMembers(NSString *)
    .includeFields(PNChannelMemberFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(PNFetchChannelMembersCompletionBlock);
* required
ParameterDescription
channel *
Type: NSString
Name of channel from which members should be fetched.
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Expression to filter out results basing on specified criteria. For more details on the supported grammar, check this
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block *
Type: PNFetchChannelMembersCompletionBlock
Fetch channel's members request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().channelMembers(@"channel")
    .includeCount(YES)
    .limit(40)
    .includeFields(PNChannelMemberCustomField | PNChannelMemberUUIDField)
    .performWithCompletion(^(PNFetchChannelMembersResult *result, PNErrorStatus *status) {
        if (!status.isError) {
            /**
             * Channel's members successfully fetched.
             * Result object has following information:
             *   result.data.members - List of channel's members.
             *   result.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
             *   result.data.prev - Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
             *   result.data.totalCount - Total number of channel's members.
             */
        } else {
show all 23 lines

Response​

Response returned by the client for fetch members:

@interface PNFetchChannelMembersData : PNServiceData

// List of fetched members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of members created for current subscribe key.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines

Error response which is used in case of App Context API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

show all 16 lines

Set channel members​

This method sets members in a channel.

Method(s)​

To Set Channel Members you can use the following method(s) in the Objective-C SDK:

- (void)setChannelMembersWithRequest:(PNSetChannelMembersRequest *)request 
                          completion:(nullable PNManageChannelMembersCompletionBlock)block;
* required
ParameterDescription
request *
Request object for setting channel members.
block
Type: PNManageChannelMembersCompletionBlock
Set channel's members list request completion block.

PNSetMembersRequest​

* required
ParameterDescription
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
filter
Type: NSString
Expression to filter out results basing on specified criteria. For more details on the supported grammar, check this
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
API limits

To learn about the maximum length of parameters used to set channel members metadata, refer to REST API docs.

Sample code​

NSArray<NSDictionary *> *uuids = @[
  @{ 
    @"uuid": @"uuid2"
    @"status": @"active",
    @"type": @"admin",
    @"custom": @{ @"role": @"moderator" } 
  }
];

PNSetChannelMembersRequest *request = [PNSetChannelMembersRequest requestWithChannel:@"channel" uuids:uuids];
// Add this request option, if returned member models should have value which has been set to
// 'custom' and 'uuid' properties.
request.includeFields = PNChannelMemberCustomField | PNChannelMemberUUIDField | PNChannelMembersTotalCountField;
request.limit = 40;

show all 34 lines

Response​

Response returned by the client for set members:

@interface PNManageChannelMembersData : PNServiceData

// List of existing members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines

Set channel members (builder pattern)​

Method(s)​

objects()
    .setChannelMembers(NSString *)
    .uuids(NSArray<NSDictionary *> *)
    .includeFields(PNChannelMemberFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(nullable PNManageChannelMembersCompletionBlock);
API limits

To learn about the maximum length of parameters used to set channel members metadata, refer to REST API docs.

* required
ParameterDescription
channel *
Type: NSString
Name of channel from which members should be set.
uuids
Type: NSArray
List of UUIDs for which metadata associated with each of them in context of channel should be set. Each entry is dictionary with UUID and optional custom fields. custom should be dictionary with simple objects: NSString and NSNumber.
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Filter expression. Only matching objects are returned. See filtering.
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block
Type: PNManageChannelMembersCompletionBlock
Set channel's members list request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

NSArray<NSDictionary *> *uuids = @[
  @{ 
    @"uuid": @"uuid2"
    @"status": @"active",
    @"type": @"admin",
    @"custom": @{ @"role": @"moderator" } 
  }
];

self.client.objects().setChannelMembers(@"channel")
    .uuids(uuids)
    .includeCount(YES)
    .limit(40)
    .includeFields(PNChannelMemberCustomField | PNChannelMemberUserField)
    .performWithCompletion(^(PNManageChannelMembersStatus *status) {
show all 33 lines

Response​

Response returned by the client for set members:

@interface PNManageChannelMembersData : PNServiceData

// List of existing members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines

Remove channel members​

Remove members from a Channel.

Method(s)​

To Remove Channel Members you can use the following method(s) in the Objective-C SDK:

- (void)removeChannelMembersWithRequest:(PNRemoveChannelMembersRequest *)request 
                             completion:(nullable PNManageChannelMembersCompletionBlock)block;
* required
ParameterDescription
request *
Request object for removing channel members.
block
Type: PNManageChannelMembersCompletionBlock
Remove channel's members request completion block.

PNRemoveChannelMembersRequest​

* required
ParameterDescription
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
filter
Type: NSString
Expression to filter out results basing on specified criteria. For more details on the supported grammar, check this
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

NSArray<NSString *> *uuids = @[@"uuid3", @"uuid4"];
PNRemoveChannelMembersRequest *request = [PNRemoveChannelMembersRequest requestWithChannel:@"channel"
                                                                                     uuids:uuids];
// Add this request option, if returned member models should have value which has been set to
// 'custom' and 'uuid' properties.
request.includeFields = PNChannelMemberCustomField | PNChannelMemberUUIDField | PNChannelMembersTotalCountField;
request.limit = 40;

[self.client removeChannelMembersWithRequest:request completion:^(PNManageChannelMembersStatus *status) {
    if (!status.isError) {
        /**
         * Channel's members successfully removed.
         * Result object has following information:
         *   result.data.members - List of channel's existing members.
         *   result.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
show all 27 lines

Response​

Response returned by the client for remove members:

@interface PNManageChannelMembersData : PNServiceData

// List of existing members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines

Remove channel members (builder pattern)​

Method(s)​

objects()
    .removeChannelMembers(NSString *)
    .uuids(NSArray<NSString *> *)
    .includeFields(PNChannelMemberFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(nullable PNManageChannelMembersCompletionBlock);
* required
ParameterDescription
channel *
Type: NSString
Name of channel from which members should be removed.
uuids
Type: NSArray
List of UUIDs which should be removed from channel's list.
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default: YES
filter
Type: NSString
Expression to filter out results basing on specified criteria. For more details on the supported grammar, check this
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block
Type: PNManageChannelMembersCompletionBlock
Remove channel's members request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

self.client.objects().removeChannelMembers(@"channel")
    .uuids(@[@"uuid3", @"uuid4"])
    .includeCount(YES)
    .limit(40)
    .includeFields(PNChannelMemberCustomField | PNChannelMemberUserField)
    .performWithCompletion(^(PNManageChannelMembersStatus *status) {
        if (!status.isError) {
            /**
             * Channel's members successfully removed.
             * Result object has following information:
             *   result.data.members - List of channel's existing members.
             *   result.data.next - Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
             *   result.data.prev - Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
             *   result.data.totalCount - Total number of channel's members.
             */
show all 24 lines

Response​

Response returned by the client for remove members:

@interface PNManageChannelMembersData : PNServiceData

// List of existing members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines

Manage channel members​

The method Set and Remove channel memberships for a user.

Method(s)​

To Manage Channel Members you can use the following method(s) in the Objective-C SDK:

- (void)manageChannelMembersWithRequest:(PNManageChannelMembersRequest *)request 
                             completion:(nullable PNManageChannelMembersCompletionBlock)block;
* required
ParameterDescription
request *
Request object for managing channel members.
block
Type: PNManageChannelMembersCompletionBlock
Manage channel's members list request completion block.

PNManageChannelMembersRequest​

* required
ParameterDescription
setMembers
Type: NSArray<NSDictionary *>
List of UUIDs which should be added to channel's members list. Each entry is dictionary with uuid and optional custom fields. custom should be dictionary with simple objects: NSString and NSNumber.
removeMembers
Type: NSArray<NSString *>
BList of UUIDs which should be removed from channel's list.
sort
Type: NSArray<NSString *>
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
filter
Type: NSString
Expression to filter out results basing on specified criteria. For more details on the supported grammar, check this
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.

Sample code​

PNManageChannelMembersRequest *request = [PNManageChannelMembersRequest requestWithChannel:@"channel"];
request.setMembers = @[
    @{ @"uuid": @"uuid2", @"custom": @{ @"role": @"moderator" } }
];
request.removeMembers = @[@"uuid3", @"uuid4"];
// Add this request option, if returned member models should have value which has been set to
// 'custom' and 'uuid' properties.
request.includeFields = PNChannelMemberCustomField | PNChannelMemberUUIDField | PNChannelMembersTotalCountField;
request.limit = 40;

[self.client manageChannelMembersWithRequest:request
                               completion:^(PNManageChannelMembersStatus *status) {

    if (!status.isError) {
        /**
show all 31 lines

Response​

Response returned by the client for manage members:

@interface PNManageChannelMembersData : PNServiceData

// List of existing members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines

Manage channel members (builder pattern)​

Method(s)​

objects()
    .manageChannelMembers(NSString *)
    .set(NSArray<NSDictionary *> *)
    .remove(NSArray<NSString *> *)
    .includeFields(PNChannelMemberFields)
    .includeCount(BOOL)
    .filter(NSString *)
    .sort(NSArray<NSString *> *)
    .limit(NSUInteger)
    .start(NSString *)
    .end(NSString *)
    .performWithCompletion(nullable PNManageChannelMembersCompletionBlock);
* required
ParameterDescription
channel *
Type: NSString
Name of channel from which members should be managed.
set
Type: NSArray
List of UUIDs which should be added to channel's members list. Each entry is dictionary with UUID and optional custom fields. custom should be dictionary with simple objects: NSString and NSNumber.
remove
Type: NSArray
List of UUIDs which should be removed from channel's list.
includeFields
Type: PNChannelMemberFields
Bitfield set to fields that should be returned with the response. Supported fields:
  • PNChannelMembersTotalCountField - include how many members the channel has.
  • PNChannelMemberCustomField - include field with additional information from metadata associated with UUID during channel member set requests.
  • PNChannelMemberStatusField - include field with metadata status associated with UUID during channel member set requests.
  • PNChannelMemberTypeField - include field with metadata type associated with UUID during channel member set requests.
  • PNChannelMemberUUIDField - include UUID's metadata in the response (not only the identifier).
  • PNChannelMemberUUIDCustomField - include UUID's additional information used during UUID metadata set requests.
  • PNChannelMemberUUIDStatusField - include UUID's status used during UUID metadata set requests.
  • PNChannelMemberUUIDTypeField - include UUID's type used during UUID metadata set requests.
The default value (PNChannelMembersTotalCountField) can be reset by setting it to 0.
includeCount
Type: BOOL
Whether to include the total count in the paginated response. Default is false.
filter
Type: NSString
Expression to filter out results basing on specified criteria. For more details on the supported grammar, check this
sort
Type: NSArray
List of criteria (name of field) which should be used for sorting in ascending order. Available options are id, name, and updated. Use asc or desc to specify sort direction. For example: {name: 'asc'}
limit
Type: NSUInteger
Number of objects to return. Default/Max: 100.
start
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
end
Type: NSString
Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data. Ignored if the start parameter is supplied.
block
Type: PNManageChannelMembersCompletionBlock
Set channel's members list request completion block.
Note

This method uses the builder pattern, you can remove the arguments which are optional.

Sample code​

NSArray<NSDictionary *> *setMembers = @[
    @{ @"uuid": @"uuid2", @"custom": @{ @"role": @"moderator" } }
];
NSArray<NSDictionary *> *removeMembers = @[@"uuid3", @"uuid4"];

self.client.objects().manageChannelMembers(@"channel")
    .set(setMembers)
    .remove(removeMembers)
    .includeCount(YES)
    .limit(40)
    .includeFields(PNChannelMemberCustomField | PNChannelMemberUUIDField)
    .performWithCompletion(^(PNManageChannelMembersStatus *status) {
        if (!status.isError) {
            /**
             * Channel's members successfully changed.
show all 30 lines

Response​

Response returned by the client for manage members:

@interface PNManageChannelMembersData : PNServiceData

// List of existing members.
@property (nonatomic, readonly, strong) NSArray<PNChannelMember *> *members;

// Random string returned from the server, indicating a specific position in a data set. Used for forward pagination, it fetches the next page, allowing you to continue from where you left off.
@property (nonatomic, nullable, readonly, strong) NSString *next;

// Random string returned from the server, indicating a specific position in a data set. Used for backward pagination, it fetches the previous page, enabling access to earlier data.
@property (nonatomic, nullable, readonly, strong) NSString *prev;

/**
 * Total number of existing objects.
 *
 * Value will be 0 in case if PNChannelMembersTotalCountField not added to 'includeFields'
show all 28 lines
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