> ## Documentation Index
> Fetch the complete documentation index at: https://www.cometchat.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Mentions (Legacy)

> Mentions (Legacy) — CometChat documentation.

<Warning>
  **Legacy Notice**: This extension is already included as part of the core messaging experience and is scheduled for deprecation in the near future.

  Please note: Legacy extensions are no longer actively maintained and will not receive feature updates or enhancements.
</Warning>

Mentions are a great way to get someone's attention in a conversation. Mentions start with the @ symbol followed by a name.

## Extension settings

1. Login to [CometChat](https://app.cometchat.com/login) and select your app.
2. Go to the Extensions section and enable the Mentions extension.

## How does it work?

### Implement UI logic in your app

Simply enabling the extension will not add the functionality to your apps. The Mentions extension heavily depends on the UI. It should have the following logic already implemented.

1. When `@` symbol is typed in the message composer, show a list of all the users of that group.
2. Insert the selected name from the list in the message composer as `@{Name|UID}`.
3. The message bubbles and the message composer render the `@{Name|UID}` as just `@Name`.

For showing a list of users in a group, you can refer to our [Retrieve Group Members](/sdk/javascript/retrieve-group-members) documentation under the SDK of your choice.

***For example:***

To mention Andrew Joseph with UID `cometchat-uid-1`, the text message should be **Hello @\{Andrew Joseph|cometchat-uid-1}**. However, it should be rendered or formatted as **Hello @Andrew Joseph** in the message composer as well as the message bubbles in the chat.

You have to use third party libraries that make the above mentioned implementation simpler and a rich text editor like [Quill](https://quilljs.com/) or [TinyMCE](https://www.tiny.cloud/tinymce/features/).

### Listing messages with mentions

To get all the messages with mentions for a user, make use of the `callExtension` method provided by CometChat SDK as shown below:

<Tabs>
  <Tab title="JavaScript">
    ```js theme={null}
    const URL = "v1/fetch";
    CometChat.callExtension('mentions', 'GET', URL, null).then(response => {
        // {messages: []}
    })
    .catch(error => {
        // Error occured
    });
    ```
  </Tab>

  <Tab title="Java">
    ```java theme={null}
    String URL = "/v1/fetch";

    CometChat.callExtension("mentions", "GET", URL, null,
    new CometChat.CallbackListener < JSONObject > () {
        @Override
        public void onSuccess(JSONObject jsonObject) {
            // {messages: []}
        }
        @Override
        public void onError(CometChatException e) {
            // Some error occured
        }
    });
    ```
  </Tab>

  <Tab title="Swift">
    ```swift theme={null}
    CometChat.callExtension(slug: "mentions", type: .get, endPoint: "v1/fetch", body: nil, onSuccess: { (response) in
            // { messages: [] }
          }) { (error) in
            // Some error occured
          }
        }
    ```
  </Tab>
</Tabs>