gistfile1.txt

@RemoteAction
global static boardInfoWrapper toggleFollowTask(string taskId){
	//Find if there is a current record
	//Need to use without sharing 
	List<EntitySubscription> existingList = trControllerWithoutSharing.queryWithoutSharing('Select e.SubscriberId, e.ParentId From EntitySubscription e WHERE e.SubscriberId=\''+String.escapeSingleQuotes(UserInfo.getUserId())+'\' AND e.ParentId=\''+String.escapeSingleQuotes(taskId)+'\' LIMIT 1000');
	//If no, insert a new one
	if(existingList.size()==0){
		EntitySubscription follow = new EntitySubscription (parentId = taskId,subscriberid = UserInfo.getUserId());
		Map<String, Schema.SObjectField> fields = Schema.SObjectType.EntitySubscription.fields.getMap();
		if(fields.get('NetworkId')!=null){
			//communities enabled, subs have network id
			follow.put('NetworkId',Network.getNetworkId());
		}

		trControllerWithoutSharing.insertWithoutSharing(new EntitySubscription[]{follow});
	}		
	//If yes, del the old one
	else{
		for(EntitySubscription record : existingList){
			trControllerWithoutSharing.deleteWithoutSharing(new EntitySubscription[]{record});
		}
	}
	return trTaskBoardController.getBoardInfo();
}