Any Simple Way to check wheter the user is belongs to SharePoint Group in Client object model

Question

Hi All,
Generally we follow these steps to check whether user belongs to this perticular group:
1.Get the "Group" object from the Group Collection based on the group name
2.Get all UserCollection from the "Group" object
3.Take a loop and check with each user object (eg User.ID="777473844")
I am thinking this is time taking process( if group has more than 100 members).
Do we have any shortway to check whether user is belongs to this perticular SharePoint Group?
Thanks in Advance!
Thanks,
Mahesh Yamana
Mahesh@SharepointSolutions

Answer 1

Hi Mahesh,
Below is a CSOM JS code to check whether a user belongs to a group. We get the current user object, and then the list of Groups which the user is part of. And then check if the required group is present or not in the collection.
function retrieveWebSite() {
var clientContext = new SP.ClientContext.get_current();
this.oWebsite = clientContext.get_web();
this.oCurrentUser = this.oWebsite.get_currentUser();
this.oUserGroups = this.oCurrentUser.get_groups();
clientContext.load(this.oUserGroups);
clientContext.executeQueryAsync(
Function.createDelegate(this, this.onQuerySucceeded),
Function.createDelegate(this, this.onQueryFailed)
function onQuerySucceeded(sender, args) {
var Group1 = "Group Name One";
var Group2 = "Group Name Two";
var flag = false;
var iCount = this.oUserGroups.get_count();
for(var i=0; i<iCount; i++)
oGroup = this.oUserGroups.getItemAtIndex(i);
if(oGroup.get_title() != Group1 && oGroup.get_title() != Group2)
flag=true;
else
flag=false; break;
if(flag == true)
//Write your logic here
function onQueryFailed(sender, args) {
alert('Request failed. ' + args.get_message() +
'\n' + args.get_stackTrace());
Ram Prasad Meenavalli | MCITP | MCTS SharePoint | MCPD SharePoint | http://www.spdeveloper.co.in