Block Users

Block and unblock users, and retrieve the list of blocked users using the CometChat JavaScript SDK.

AI Integration Quick Reference

// Block users
await CometChat.blockUsers(["UID1", "UID2"]);

// Unblock users
await CometChat.unblockUsers(["UID1", "UID2"]);

// Get blocked users list
let request = new CometChat.BlockedUsersRequestBuilder().setLimit(30).build();
let blockedUsers = await request.fetchNext();

Directions: BLOCKED_BY_ME | HAS_BLOCKED_ME | BOTH (default)

Blocking a user prevents all communication between them and the logged-in user — messages, calls, and presence updates are all suppressed. You can block and unblock users by UID, and fetch the blocked users list with filtering and pagination.

Block Users

Block users to prevent all communication with them. Use blockUsers() with an array of UIDs.

TypeScript

const usersList: String[] = ["UID1", "UID2", "UID3"];

CometChat.blockUsers(usersList).then(
  (list: Object) => {
      console.log("users list blocked", { list });
  }, (error: CometChat.CometChatException) => {
      console.log("Blocking user fails with error", error);
  }
);

JavaScript

const usersList = ["UID1", "UID2", "UID3"];

CometChat.blockUsers(usersList).then(
list => {
  console.log("users list blocked", { list });
}, error => {
  console.log("Blocking user fails with error", error);
}
);

Alternatively, you can use the async/await syntax:

const usersList = ["UID1", "UID2", "UID3"];

try {
  const list = await CometChat.blockUsers(usersList);
  console.log("users list blocked", { list });
} catch (error) {
  console.log("Blocking user fails with error", error);
}

Returns an object with UIDs as keys and "success" or "fail" as values. Each User in the request is processed independently.

Unblock Users

Unblock previously blocked users using unblockUsers() with an array of UIDs.

TypeScript

const usersList: String[] = ["UID1", "UID2", "UID3"];

CometChat.unblockUsers(usersList).then(
  (list: Object) => {
      console.log("users list blocked", { list });
  }, (error: CometChat.CometChatException) => {
      console.log("Blocking user fails with error", error);
  }
); 

JavaScript

const usersList = ["UID1", "UID2", "UID3"];

CometChat.unblockUsers(usersList).then(
list => {
  console.log("users list unblocked", { list });
}, error => {
  console.log("unblocking user fails with error", error);
}
);

Alternatively, you can use the async/await syntax:

const usersList = ["UID1", "UID2", "UID3"];

try {
  const list = await CometChat.unblockUsers(usersList);
  console.log("users list unblocked", { list });
} catch (error) {
  console.log("unblocking user fails with error", error);
}

Returns an object with UIDs as keys and "success" or "fail" as values. Each User in the request is processed independently.

Get List of Blocked Users

Use BlockedUsersRequestBuilder to fetch blocked users with filtering and pagination.

Set Limit

Sets the number of blocked users to fetch per request.

TypeScript

let limit: number = 30;
let blockedUsersRequest: CometChat.BlockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
  .setLimit(limit)
  .build();

JavaScript

let limit = 30;
let blockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
                  				.setLimit(limit)
                  				.build();

Set Search Keyword

Filters blocked users by a search string.

TypeScript

let limit: number = 30;
let searchKeyword: string = "super";
let blockedUsersRequest: CometChat.BlockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
  .setLimit(limit)
  .setSearchKeyword(searchKeyword)
  .build();

JavaScript

let limit = 30;
let searchKeyword = "super";
let blockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
                  				.setLimit(limit)
                  				.setSearchKeyword(searchKeyword)
                  				.build();

Set Direction

Filters by block direction:

• BLOCKED_BY_ME — Users blocked by the logged-in user
• HAS_BLOCKED_ME — Users who have blocked the logged-in user
• BOTH — Both directions (default)

TypeScript

let limit: number = 30;
let blockedUsersRequest: CometChat.BlockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
  .setLimit(limit)
  .setDirection(CometChat.BlockedUsersRequest.directions.BLOCKED_BY_ME)
  .build();

JavaScript

let limit = 30;
let blockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
 .setLimit(limit)
 .setDirection(CometChat.BlockedUsersRequest.directions.BLOCKED_BY_ME)
 .build();

Finally, once all the parameters are set to the builder class, you need to call the build() method to get the object of the BlockedUsersRequest class.

Once you have the object of the BlockedUsersRequest class, you need to call the fetchNext() method. Calling this method will return a list of User objects containing n number of blocked users where N is the limit set in the builder class.

TypeScript

let limit = 30;
let blockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
  .setLimit(limit)
  .setDirection(CometChat.BlockedUsersRequest.directions.BLOCKED_BY_ME)
  .build();

JavaScript

let limit = 30;
let blockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
  .setLimit(limit)
  .setDirection(CometChat.BlockedUsersRequest.directions.BLOCKED_BY_ME)
  .build();

After configuring the builder, call build() to get the BlockedUsersRequest object, then call fetchNext() to retrieve blocked users.

TypeScript

let limit: number = 30;
let blockedUsersRequest: CometChat.BlockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
  .setLimit(limit)
  .build();

blockedUsersRequest.fetchNext().then(
  (userList: CometChat.User[]) => {
      console.log("Blocked user list received:", userList);
  }, (error: CometChat.CometChatException) => {
      console.log("Blocked user list fetching failed with error:", error);
  }
);

JavaScript

const limit = 30;
const blockedUsersRequest = new CometChat.BlockedUsersRequestBuilder()
                  				.setLimit(limit)
                  				.build();
blockedUsersRequest.fetchNext().then(
userList => {
  console.log("Blocked user list received:", userList);
}, error => {
  console.log("Blocked user list fetching failed with error:", error);
}
);

The fetchNext() method returns an array of User objects representing blocked users.

Relevant fields to access on returned users:

Field	Getter	Return Type	Description
blockedByMe	getBlockedByMe()	boolean	Whether the logged-in user has blocked this user
hasBlockedMe	getHasBlockedMe()	boolean	Whether this user has blocked the logged-in user

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Next Steps

Retrieve Users

Fetch and filter user lists

User Presence

Track online/offline status of users

User Management

Create, update, and delete users

Flag Message

Report inappropriate messages from users