Metadata API for PubNub Node.js SDK

This page describes the new Objects v2. To upgrade from Objects v1, refer to the migration guide

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

PubNub also triggers events when object data is set or removed from the database. Clients can receive these events in real time and update their front-end application accordingly.

User

Get Metadata for All Users

Description

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 Node.js V4 SDK:

1. pubnub.objects.getAllUUIDMetadata( {Object include, String filter, Object sort, Number limit, Object page}, Function callback )
   

   Parameter	Type	Required	Defaults	Description
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are id, name, and updated. Use asc or desc to specify sort direction, or specify null to take the default sort direction (ascending). For example: {name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.getAllUUIDMetadata();

Response

{
    "status": 200,
    "data": [
        {
            "id": "uuid-1",
            "name": "John Doe",
            "externalId": null,
            "profileUrl": null,
            "email": "johndoe@pubnub.com",
            "custom": null,
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "MDcyQ0REOTUtNEVBOC00QkY2LTgwOUUtNDkwQzI4MjgzMTcwCg=="
        },
        {
            "id": "uuid-2",
            "name": "Bob Cat",
            "externalId": null,
            "profileUrl": null,
            "email": "bobc@example.com",
            "custom": {
                "phone": "999-999-9999"
            },
            "updated": "2019-02-21T03:29:00.173452",
            "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
        }
    ]
}

Get User Metadata

Description

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 Node.js V4 SDK:

1. pubnub.objects.getUUIDMetadata( {String uuid, Object include}, Function callback )
   

   Parameter	Type	Required	Defaults	Description
   uuid	String	Optional	current uuid	Unique user identifier. If not supplied then current user's uuid is used.
   include	Object	Optional		Include respective additional fields in the response.
   customFields	Boolean	Optional	true	Whether to fetch custom fields or not.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

// using UUID from the config
pubnub.objects.getUUIDMetadata();

// using passed in UUID
pubnub.objects.getUUIDMetadata({
    uuid: 'myUuid',
});

Response

{
    "status": 200,
    "data": {
        "id": "uuid-1",
        "name": "John Doe",
        "externalId": null,
        "profileUrl": null,
        "email": "johndoe@pubnub.com",
        "updated": "2019-02-20T23:11:20.893755",
        "eTag": "MDcyQ0REOTUtNEVBOC00QkY2LTgwOUUtNDkwQzI4MjgzMTcwCg=="
    }
}

Set User Metadata

Description

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 Node.js V4 SDK:

1. pubnub.objects.setUUIDMetadata( {String uuid, Object data, Object include}, Function callback )
   

   Parameter	Type	Required	Defaults	Description
   uuid	String	Optional	current uuid	Unique user identifier. If not supplied then current user's uuid is used.
   data	Object	Yes		JSON object with uuid metadata to set.
   name	String	Optional		Display name for the user. Maximum 200 characters.
   externalId	String	Optional		User's identifier in an external system
   profileUrl	String	Optional		The URL of the user's profile picture
   email	String	Optional		The user's email address. Maximum 80 characters.
   custom	Object	Optional		JSON object of key-value pairs with supported data types.
   include	Object	Optional		Include respective additional fields in the response.
   customFields	Boolean	Optional	true	Whether to fetch custom fields or not.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

// using UUID from the config
pubnub.objects.setUUIDMetadata({
    data: {
        name: 'John Doe'
    }
});

// using passed in UUID
pubnub.objects.setUUIDMetadata({
    uuid: 'myUuid',
    data: {}
});

Response

{
    "status": 200,
    "data": {
        "id": "uuid-1",
        "name": "John Doe",
        "externalId": null,
        "profileUrl": null,
        "email": "johndoe@pubnub.com",
        "updated": "2019-02-20T23:11:20.893755",
        "eTag": "MDcyQ0REOTUtNEVBOC00QkY2LTgwOUUtNDkwQzI4MjgzMTcwCg=="
    }
}

Remove User Metadata

Description

Removes the metadata from a specified UUID.

Method(s)

To Remove UUID Metadata you can use the following method(s) in the Node.js V4 SDK:

1. pubnub.objects.removeUUIDMetadata( {String uuid}, Function callback )
   

   Parameter	Type	Required	Defaults	Description
   uuid	String	Optional	current uuid	Unique user identifier. If not supplied then current user's uuid is used.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

// using UUID from the config
pubnub.objects.removeUUIDMetadata();

// using passed in UUID
pubnub.objects.removeUUIDMetadata({
    uuid: 'myUuid'
});

Response

{
    "status": 0,
    "data": {}
}

Channel

Get Metadata for All Channels

Description

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 Node.js V4 SDK:

1. pubnub.objects.getAllChannelMetadata( {Object include, String filter, Object sort, Number limit, Object page}, Function callback )
   

   Parameter	Type	Required	Defaults	Description
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are id, name, and updated. Use asc or desc to specify sort direction, or specify null to take the default sort direction (ascending). For example: {name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.getAllChannelMetadata({
    include: {
        totalCount: true
    }
});

Response

{
    "status": 200,
    "data": [
        {
            "id": "my-channel",
            "name": "My channel",
            "description": "A channel that is mine",
            "custom": null,
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
        },
        {
            "id": "main",
            "name": "Main channel",
            "description": "The main channel",
            "custom": {
                "public": true,
                "motd": "Always check your spelling!"
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
        }
    ],
    "totalCount": 9,
    "next": "MUIwQTAwMUItQkRBRC00NDkyLTgyMEMtODg2OUU1N0REMTNBCg==",
    "prev": "M0FFODRENzMtNjY2Qy00RUExLTk4QzktNkY1Q0I2MUJFNDRCCg=="
}

Get Channel Metadata

Description

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 Node.js V4 SDK:

1. pubnub.objects.getChannelMetadata({String channel, Object include},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   channel	String	Yes		Channel name.
   include	Object	Optional		Include respective additional fields in the response.
   customFields	Boolean	Optional	true	Whether to fetch custom fields or not.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.getChannelMetadata({
    channel: 'myChannel',
});

Response

{
    "status": 200,
    "data": {
        "id": "my-channel",
        "name": "My channel",
        "description": "A channel that is mine",
        "updated": "2019-02-20T23:11:20.893755",
        "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
    }
}

Set Channel Metadata

Description

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 Node.js V4 SDK:

1. pubnub.objects.setChannelMetadata({String channel, Object data, Object include},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   channel	String	Yes		Channel name.
   data	Object	Yes		JSON object with channel metadata to set.
   name	String	Optional		Name of a channel.
   description	String	Optional		Description of a channel.
   custom	Object	Optional		JSON object of key-value pairs with supported data types.
   include	Object	Optional		Include respective additional fields in the response.
   customFields	Boolean	Optional	true	Whether to fetch custom fields or not.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.setChannelMetadata({
    channel: 'myChannel',
    data: {
        name: 'Channel Name'
    }
});

Response

{
    "status": 200,
    "data": {
        "id": "my-channel",
        "name": "My channel",
        "description": "A channel that is mine",
        "updated": "2019-02-20T23:11:20.893755",
        "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
    }
}

Remove Channel Metadata

Description

Removes the metadata from a specified channel.

Method(s)

To Remove Channel Metadata you can use the following method(s) in the Node.js V4 SDK:

1. pubnub.objects.removeChannelMetadata({String channel},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   channel	String	Yes		Channel name.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.removeChannelMetadata({
    channel: 'myChannel'
});

Response

{
    "status": 0,
    "data": {}
}

Channel Memberships

Get Channel Memberships

Description

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 Node.js V4 SDK:

1. pubnub.objects.getMemberships({String uuid, Object include, String filter, Object sort, Number limit, Object page},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   uuid	String	Optional	current uuid	Unique user identifier. If not supplied then current user's uuid is used.
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   channelFields	Boolean	Optional	false	Include fields for channels metadata.
   customChannelFields	Boolean	Optional	false	Include custom fields for channels metadata.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are updated, channel.id, channel.name, and channel.updated. Use asc or desc to specify sort direction, or specify null to take the default sort direction (ascending). For example: {channel.name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

// using UUID from the config
pubnub.objects.getMemberships();

// using passed in UUID
pubnub.objects.getMemberships({
    uuid: 'myUuid',
    include: {
        channelFields: true
    }
});

Response

{
    "status": 200,
    "data": [
        {
            "channel": {
                "id": "my-channel",
                "name": "My channel",
                "description": "A channel that is mine",
                "custom": null,
                "updated": "2019-02-20T23:11:20.893755",
                "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
            },
            "custom": {
                "starred": false
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "RUNDMDUwNjktNUYwRC00RTI0LUI1M0QtNUUzNkE2NkU0MEVFCg=="
        },
        {
            "channel": {
                "id": "main",
                "name": "Main channel",
                "description": "The main channel",
                "custom": {
                    "public": true,
                    "motd": "Always check your spelling!"
                },
                "updated": "2019-02-20T23:11:20.893755",
                "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "RUNDMDUwNjktNUYwRC00RTI0LUI1M0QtNUUzNkE2NkU0MEVFCg=="
        }
    ],
    "totalCount": 7,
    "next": "RDIwQUIwM0MtNUM2Ni00ODQ5LUFGRjMtNDk1MzNDQzE3MUVCCg==",
    "prev": "MzY5RjkzQUQtNTM0NS00QjM0LUI0M0MtNjNBQUFGODQ5MTk2Cg=="
}

Set Channel Memberships

Description

Set channel memberships for a UUID.

Method(s)

To Set Memberships you can use the following method(s) in the Node.js V4 SDK:

1. pubnub.objects.setMemberships({String uuid, Array channels, Object include, String filter, Object sort, Number limit, Object page},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   uuid	String	Optional	current uuid	Unique user identifier. If not supplied then current user's uuid is used.
   channels	Array	Yes		Array of channels to add to membership. Array can contain strings (channel-name only) or objects (which can include custom data).
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   custom	Object	Optional		JSON object of key-value pairs with supported data types.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   channelFields	Boolean	Optional	false	Include fields for channels metadata.
   customChannelFields	Boolean	Optional	false	Include custom fields for channels metadata.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are updated, channel.id, channel.name, and channel.updated. Use asc or desc to specify sort direction, or specify null to take the default sort direction (ascending). For example: {channel.name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

// using UUID from the config
pubnub.objects.setMemberships({
    channels: ['ch-1', 'ch-2']
});

// using passed in UUID
pubnub.objects.setMemberships({
 uuid: 'my-uuid',
 channels: [
   "my-channel-1",
   { id: "my-channel-2" },
   { id: "my-channel-3", custom: { hello: "world" } },
   include: {
        // To include channel fields in response
        channelFields: true
    }
 ]
});

Response

{
    "status": 200,
    "data": [
        {
            "channel": {
              "id": "my-channel",
              "name": "My channel",
              "description": "A channel that is mine",
              "custom": null,
              "updated": "2019-02-20T23:11:20.893755",
              "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
            },
            "custom": {
                "starred": false
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "RUNDMDUwNjktNUYwRC00RTI0LUI1M0QtNUUzNkE2NkU0MEVFCg=="
        },
        {
          "channel": {
              "id": "main",
              "name": "Main channel",
              "description": "The main channel",
              "custom": {
                  "public": true,
                  "motd": "Always check your spelling!"
              },
              "updated": "2019-02-20T23:11:20.893755",
              "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
          },
          "updated": "2019-02-20T23:11:20.893755",
          "eTag": "RUNDMDUwNjktNUYwRC00RTI0LUI1M0QtNUUzNkE2NkU0MEVFCg=="
        }
    ],
    "totalCount": 7,
    "next": "RDIwQUIwM0MtNUM2Ni00ODQ5LUFGRjMtNDk1MzNDQzE3MUVCCg==",
    "prev": "MzY5RjkzQUQtNTM0NS00QjM0LUI0M0MtNjNBQUFGODQ5MTk2Cg=="
}

Remove Channel Memberships

Description

Remove channel memberships for a UUID.

Method(s)

To Remove Memberships you can use the following method(s) in the Node.js V4 SDK:

1. pubnub.objects.removeMemberships({String uuid, String[] channels, Object include, String filter, Object sort, Number limit, Object page},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   uuid	String	Optional	current uuid	Unique user identifier. If not supplied then current user's uuid is used.
   channels	String[]	Yes		Channels to remove from membership.
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   channelFields	Boolean	Optional	false	Include fields for channels metadata.
   customChannelFields	Boolean	Optional	false	Include custom fields for channels metadata.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are updated, channel.id, channel.name, and channel.updated. Use asc or desc to specify sort direction., or specify null to take the default sort direction (ascending). For example: {channel.name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

// using UUID from the config
pubnub.objects.removeMemberships({
    channels: ['ch-1', 'ch-2'],
});

// using passed in UUID
pubnub.objects.removeMemberships({
    uuid: 'myUuid',
    channels: ['ch-1', 'ch-2'],
});

Response

{
    "status": 200,
    "data": [
        {
            "channel": {
              "id": "my-channel",
              "name": "My channel",
              "description": "A channel that is mine",
              "custom": null,
              "updated": "2019-02-20T23:11:20.893755",
              "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
            },
            "custom": {
                "starred": false
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "RUNDMDUwNjktNUYwRC00RTI0LUI1M0QtNUUzNkE2NkU0MEVFCg=="
        },
        {
            "channel": {
              "id": "main",
              "name": "Main channel",
              "description": "The main channel",
              "custom": {
                  "public": true,
                  "motd": "Always check your spelling!"
              },
              "updated": "2019-02-20T23:11:20.893755",
              "eTag": "RTc1NUQwNUItREMyNy00Q0YxLUJCNDItMEZDMTZDMzVCN0VGCg=="
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "RUNDMDUwNjktNUYwRC00RTI0LUI1M0QtNUUzNkE2NkU0MEVFCg=="
        }
    ],
    "totalCount": 7,
    "next": "RDIwQUIwM0MtNUM2Ni00ODQ5LUFGRjMtNDk1MzNDQzE3MUVCCg==",
    "prev": "MzY5RjkzQUQtNTM0NS00QjM0LUI0M0MtNjNBQUFGODQ5MTk2Cg=="
}

Channel Members

Get Channel Members

Description

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 Node.js V4 SDK:

1. pubnub.objects.getChannelMembers({String channel, Object include, String filter, Object sort, Number limit, Object page},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   channel	String	Yes		Channel name.
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   UUIDFields	Boolean	Optional	false	Include fields for UUIDs metadata.
   customUUIDFields	Boolean	Optional	false	Include custom fields for UUIDs metadata.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are updated, uuid.id, uuid.name, and uuid.updated. Use asc or desc to specify sort direction, or specify null to take the default sort direction (ascending). For example: {uuid.name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.getChannelMembers({
    channel: 'myChannel',
    include: {
        UUIDFields: true
    }
});

Response

{
  "status": 200,
  "data": [
    {
      "uuid": {
        "id": "uuid-1",
        "name": "John Doe",
        "externalId": null,
        "profileUrl": null,
        "email": "jack@twitter.com",
        "custom": null,
        "updated": "2019-02-20T23:11:20.893755",
        "eTag": "MDcyQ0REOTUtNEVBOC00QkY2LTgwOUUtNDkwQzI4MjgzMTcwCg=="
      },
      "custom": {
        "role": "admin"
      },
      "updated": "2019-02-20T23:11:20.893755",
      "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
    },
    {
      "uuid": {
        "id": "uuid-2",
        "name": "Bob Cat",
        "externalId": null,
        "profileUrl": null,
        "email": "bobc@example.com",
        "custom": {
          "phone": "999-999-9999"
        },
        "updated": "2019-02-21T03:29:00.173452",
        "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
      },
      "updated": "2019-02-20T23:11:20.893755",
      "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
    }
  ],
  "totalCount": 37,
  "next": "RDIwQUIwM0MtNUM2Ni00ODQ5LUFGRjMtNDk1MzNDQzE3MUVCCg==",
  "prev": "MzY5RjkzQUQtNTM0NS00QjM0LUI0M0MtNjNBQUFGODQ5MTk2Cg=="
}

Set Channel Members

Description

This method sets members in a channel.

Method(s)

To Set Channel Members you can use the following method(s) in the Node.js V4 SDK:

1. pubnub.objects.setChannelMembers({String channel, Array uuids, Object include, String filter, Object sort, Number limit, Object page},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   channel	String	Yes		Channel name.
   uuids	Array	Yes		Array of members to add to the channel. Array can contain strings (uuid only) or objects (which can include custom data).
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   UUIDFields	Boolean	Optional	false	Include fields for UUIDs metadata.
   custom	Object	Optional		JSON object of key-value pairs with supported data types.
   customUUIDFields	Boolean	Optional	false	Include custom fields for UUIDs metadata.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are updated, uuid.id, uuid.name, and uuid.updated. Use asc or desc to specify sort direction, or specify null to take the default sort direction (ascending). For example: {uuid.name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.setChannelMembers({
    channel: 'myChannel',
    uuids: ['uuid-1', 'uuid-2'],
});

Response

{
    "status": 200,
    "data": [
        {
            "uuid": {
                "id": "uuid-1",
                "name": "John Doe",
                "externalId": null,
                "profileUrl": null,
                "email": "johndoe@pubnub.com",
                "custom": null,
                "updated": "2019-02-20T23:11:20.893755",
                "eTag": "MDcyQ0REOTUtNEVBOC00QkY2LTgwOUUtNDkwQzI4MjgzMTcwCg=="
            },
            "custom": {
                "role": "admin"
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
        },
        {
            "uuid": {
                "id": "uuid-2",
                "name": "Bob Cat",
                "externalId": null,
                "profileUrl": null,
                "email": "bobc@example.com",
                "custom": {
                    "phone": "999-999-9999"
                },
                "updated": "2019-02-21T03:29:00.173452",
                "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
        }
    ],
    "totalCount": 37,
    "next": "RDIwQUIwM0MtNUM2Ni00ODQ5LUFGRjMtNDk1MzNDQzE3MUVCCg==",
    "prev": "MzY5RjkzQUQtNTM0NS00QjM0LUI0M0MtNjNBQUFGODQ5MTk2Cg=="
}

Remove Channel Members

Description

Remove members from a Channel.

Method(s)

To Remove Channel Members you can use the following method(s) in the Node.js V4 SDK:

1. pubnub.objects.removeChannelMembers({String channel, String[] uuids, Object include, String filter, Object sort, Number limit, Object page},Function callback)
   

   Parameter	Type	Required	Defaults	Description
   channel	String	Yes		Channel name.
   uuids	String[]	Yes		Members to remove from channel.
   include	Object	Optional		Include respective additional fields in the response.
   totalCount	Boolean	Optional	false	Request totalCount to be included in paginated response. By default, totalCount is omitted.
   customFields	Boolean	Optional	false	Whether to fetch custom fields or not.
   UUIDFields	Boolean	Optional	false	Include fields for UUIDs metadata.
   customUUIDFields	Boolean	Optional	false	Include custom fields for UUIDs metadata.
   filter	String	Optional		Expression used to filter the results. Only objects whose properties satisfy the given expression are returned. The filter language is defined here
   sort	Object	Optional		Key-value pair of a property to sort by, and a sort direction. Available options are updated, uuid.id, uuid.name, and uuid.updated. Use asc or desc to specify sort direction, or specify null to take the default sort direction (ascending). For example: {uuid.name: 'asc'}
   limit	Number	Optional	100	Number of objects to return in response. Default is 100, which is also the maximum value.
   page	Object	Optional		Use for pagination.
   next	String	Optional		Previously-returned cursor bookmark for fetching the next page.
   prev	String	Optional		Previously-returned cursor bookmark for fetching the previous page. Ignored if you also supply the start parameter.
   callback	(result) => void	Optional		Callback to the function. If not passed, the function will return a Promise instead.

Basic Usage

pubnub.objects.removeChannelMembers({
    channel: 'myChannel',
    uuids: ['uuid-1', 'uuid-2'],
});

Response

{
    "status": 200,
    "data": [
        {
            "uuid": {
                "id": "uuid-1",
                "name": "John Doe",
                "externalId": null,
                "profileUrl": null,
                "email": "johndoe@pubnub.com",
                "custom": null,
                "updated": "2019-02-20T23:11:20.893755",
                "eTag": "MDcyQ0REOTUtNEVBOC00QkY2LTgwOUUtNDkwQzI4MjgzMTcwCg=="
            },
            "custom": {
                "role": "admin"
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
        },
        {
            "uuid": {
                "id": "uuid-2",
                "name": "Bob Cat",
                "externalId": null,
                "profileUrl": null,
                "email": "bobc@example.com",
                "custom": {
                    "phone": "999-999-9999"
                },
                "updated": "2019-02-21T03:29:00.173452",
                "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
            },
            "updated": "2019-02-20T23:11:20.893755",
            "eTag": "QkRENDA5MjItMUZCNC00REI5LUE4QTktRjJGNUMxNTc2MzE3Cg=="
        }
    ],
    "totalCount": 37,
    "next": "RDIwQUIwM0MtNUM2Ni00ODQ5LUFGRjMtNDk1MzNDQzE3MUVCCg==",
    "prev": "MzY5RjkzQUQtNTM0NS00QjM0LUI0M0MtNjNBQUFGODQ5MTk2Cg=="
}

Objects Filtering Language Definition

The filtering language for Objects is similar to the stream filtering language.

Note the following:

• Date/time properties, such as updated, must be compared to valid date/time strings formatted according to ISO 8601.
• Custom properties must have the same type as the value used in the expression; it is an error to compare a custom property of one type to a value of another type.
• Objects that do not have the referenced custom property at all are excluded regardless of the operator or value used in the expression. The null value can be used to filter out objects that do or do not have the referenced custom property.
• The LIKE operator supports wildcards denoted by the * character. A wildcard matches any sequence of arbitrary Unicode characters, including the empty sequence. The literal asterisk is matched when escaped using the backslash (\) character.
• Values used with LIKE must be properly encoded just like any other string value. Thus, in order to escape an asterisk, the raw value must contain \\*.
• The entire expression must be properly URL-encoded when used in the query string.

<expression>           ::= <and_expression> ( "||" <and_expression> )*
<and_expression>       ::= <binary_condition> ( "&&" <binary_condition> )*
<binary_condition>     ::= "!" <binary_condition> | "(" <expression> ")" | <relational_condition>
<relational_condition> ::= <property_path> <relational_operator> <value>
<property_path>        ::= <property_name> ( "." <property_name> )*
<property_name>        ::= <identifier> | "[" <string> "]"
<value>                ::= <string> | <number> | "true" | "false" | "null"

Tokens

<identifier>           ::=  <letter> | "$" | "_" ( <letter> | "$" | "_" | <digit> )*
<relational_operator>  ::= "==" | "!=" | "<=" | ">=" | "<" | ">" | "LIKE"
<string>               ::= <double_quote> ( "\" <double_quote> | "\" <special_char>
                            | "\" "u" <hex_digit> <hex_digit> <hex_digit> <hex_digit>
                            | <unicode_char> - <double_quote> - "\" )* <double_quote>
                            | "'" ( "\" "'" | "\" <special_char>
                            | "\" "u" <hex_digit> <hex_digit> <hex_digit> <hex_digit>
                            | <unicode_char> - "'" - "\" )* "'"
<number>               ::= ( "+" | "-" )? ( <digit> )* ( "." )? <digit> ( <digit> )*
                            ( "e" | "E" ( "+" | "-" )? <digit> ( <digit> )* )?
<letter>               ::= Unicode Letter (category; any kind of letter from any language)
<digit>                ::= "0" .. "9"
<hex_digit>            ::= <digit> | "A" .. "F"
<double_quote>         ::= the " character
<unicode_char>         ::= any character in the Unicode range from U+0020 to U+10FFFF inclusive
<special_char>         ::= "\" | "/" | "b" | "f" | "n" | "r" | "t"

Sample object filtering operations

The following simple expression returns results whose custom property named public is equal to Boolean true.

custom.public == true

The following date/time comparison returns results that were modified on or after August 31st, 2019 (UTC):

updated >= "2019-08-31T00:00:00Z"

The following compound expression returns results that don't have a description, but do have a non-empty custom label or description property:

description == null && (custom.label != "" || custom.description != "")

The following wildcard expression returns results whose name starts with the letter X:

name LIKE 'X*'

The following escaped wildcard expression returns results whose name contains an asterisk:

name LIKE '*\\**'