Update metadata

This action updates key-value items used to store additional information about a channel. Values of existing items are updated and new items can be created when there no existing items with the keys.

Note: See this page to learn more about differences among data properties.

HTTP request

// Updates existing items of a channel metadata by their keys or adding new items to the metadata.
PUT https://api-{application_id}.sendbird.com/v3/{channel_type}/{channel_url}/metadata

// Updates a specific item of a channel metadata by its key.
PUT https://api-{application_id}.sendbird.com/v3/{channel_type}/{channel_url}/metadata/{key}

Parameters

The following table lists the parameters that this action supports.

Parameters

Required	Type	Description
channel_type	string	Specifies the type of the channel. Acceptable values are `open_channels` and `group_channels`.
channel_url	string	Specifies the URL of the target channel.

Optional	Type	Description
key	string	Specifies the key of the metadata item. If not specified, the items in the `metadata` property are updated. If specified, only the item that matches the parameter value is updated. URL encoding a key is recommended.

Request body

The following table lists the properties of an HTTP request that this action supports.

Properties

Required	Type	Description
metadata	nested object	Specifies a `JSON` object that has the key-value items. The key can't contain a comma (,) and its length is limited to 128 characters. A value must be a string and its length is limited to 190 characters.

Optional	Type	Description
upsert	boolean	Determines whether to add new items in addition to updating existing items. If set to `true`, new key-value items in the `metadata` property are added when there are no existing items with the keys. If there are already items with the keys, the existing items are updated with the new values. If set to `false`, only the items with keys that match the ones you specified are updated. (Default: `false`)

Request body example

// When updating existing items by their keys and adding new items to the metadata
{
    "metadata": {
        "background_image": "https://sendbird.com/main/img/bg/theme_018.png",   // Updated
        "text_size": "small",   // Updated
        "text_color": "purple"  // Added
    },
    "upsert": true
}

// When updating a specific item by its key
{
    "value": "https://sendbird.com/main/img/bg/theme_018.png"
}

Responses

If successful, this action returns the updated or added items in the metadata in the response body.

Error

In the case of an error, an error object like below is returned. See the error codes section for more details.

Status: 400 Bad Request

{
    "message": "\"Channel\" not found.",
    "code": 400201,
    "error": true
}

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