Create a Group

Create a Group

In other words, as a logged-in user, how do I create a public, private or password-protected group?

You can create a group using createGroup() method. This method takes a Group object as input.

To create an object of Group class, you can use either of the below two constructors:

1. new Group(String GUID, String name, String groupType, String password)
2. new Group(String GUID, String name, String groupType, String password, String icon, String description)

The groupType needs to be either of the below 3 values:

1.CometChatConstants.GROUP_TYPE_PUBLIC (public)

2.CometChatConstants.GROUP_TYPE_PASSWORD (password)

3.CometChatConstants.GROUP_TYPE_PRIVATE (private)

Create Group

var GUID = "GUID";
var groupName = "Hello Group!";
var groupType = CometChat.GROUP_TYPE.PUBLIC;
var password = "";

var group = new CometChat.Group(GUID, groupName, groupType, password);

CometChat.createGroup(group).then(
  group => {
  	console.log("Group created successfully:", group);
  }, error => {
  	console.log("Group creation failed with exception:", error);
  }
);

Typescript

var GUID: string = "GUID";
var groupName: string = "Hello Group!";
var groupType: string = CometChat.GROUP_TYPE.PUBLIC;
var password: string = "";

var group: CometChat.Group = new CometChat.Group(GUID, groupName, groupType, password);

CometChat.createGroup(group).then(
  (group: CometChat.Group) => {
      console.log("Group created successfully:", group);
  }, (error: CometChat.CometChatException) => {
      console.log("Group creation failed with exception:", error);
  }
);

The createGroup() method takes the following parameters:

Parameter	Description
group	An instance of Group class

After successful creation of the group, you will receive an instance of Group class which contains all the information about the particular group.

warning

GUID can be alphanumeric with underscore and hyphen. Spaces, punctuation and other special characters are not allowed.

Add members while creating a group

You can create a group and add members at the same time using the createGroupWithMembers() method. This method takes the Group Object, Array of Group Member Object to be added & Array of UIDs to be banned.

To create an object of Group class, you can use either of the below two constructors:

1. new Group(String GUID, String name, String groupType, String password)
2. new Group(String GUID, String name, String groupType, String password, String icon, String description)

The groupType needs to be either of the below 3 values:

1. CometChat.GROUP_TYPE.PUBLIC
2. CometChat.GROUP_TYPE.PASSWORD
3. CometChat.GROUP_TYPE.PRIVATE

To create an object of Group Member class, you can use the below constructor:

• new CometChat.GroupMember(String UID, String scope)

Javascript

let GUID = "cometchat-guid-11";
let UID = "cometchat-uid-1";
let groupName = "Hello Group!";
let groupType = CometChat.GROUP_TYPE.PUBLIC;

let group = new CometChat.Group(GUID, groupName, groupType);
let members = [
new CometChat.GroupMember(UID, CometChat.GROUP_MEMBER_SCOPE.PARTICIPANT)
];
let banMembers = ["cometchat-uid-2"];

CometChat.createGroupWithMembers(group, members, banMembers).then(
  response => {
  	console.log("Group created successfully", response);
  }, error => {
  	console.log("Some error occured while creating group", error)
  }
);

Typescript

let GUID: string = "cometchat-guid-11";
let UID: string = "cometchat-uid-1";
let groupName: string = "Hello Group!";
let groupType: string = CometChat.GROUP_TYPE.PUBLIC;

let group: CometChat.Group = new CometChat.Group(GUID, groupName, groupType);
let members: Array<CometChat.GroupMember> = [
new CometChat.GroupMember(UID, CometChat.GROUP_MEMBER_SCOPE.PARTICIPANT)
];
let banMembers: Array<String> = ["cometchat-uid-2"];

CometChat.createGroupWithMembers(group, members, banMembers).then(
  (response: Object) => {
  	console.log("Group created successfully", response);
  }, (error: CometChat.CometChatException) => {
  	console.log("Some error occured while creating group", error)
  }
);

This method returns an Object which has two keys: group & members . The group key has the Group Object which contains all the information of the group which is created. The members key has the UID of the users and the value will either be success or an error message describing why the operation to add/ban the user failed.

Group Class

Field	Editable	Information
guid	Needs to be specified at group creation. Cannot be edited later	A unique identifier for a group
name	Yes	Name of the group
type	No	Type of the group: Can be 1. Public 2. Password 3. Private
password	No	Password for the group in case the group is of type password.
icon	Yes	An URL to group icon
description	Yes	Description about the group
owner	Yes	UID of the owner of the group.
metadata	Yes	Additional data for the group as JSON
createdAt	No	The unix timestamp of the time the group was created
updatedAt	No	The unix timestamp of the time the group was last updated
hasJoined	No	A boolean to determine if the logged in user is a member of the group.
joinedAt	No	The unix timestamp of the time the logged in user joined the group.
scope	Yes	Scope of the logged in user. Can be: 1. Admin 2. Moderator 3. Participant
membersCount	No	The number of members in the groups
tags	Yes	A list of tags to identify specific groups.