public void Like(int idPost)
{
PostsController post = new PostsController();
Notification notif = new Notification();
notif.idPost = idPost;
notif.userName = Context.User.Identity.GetUserName();
var currentUserId = Context.User.Identity.GetUserId();
post.CreateLike(idPost, currentUserId);
Clients.Client(Context.ConnectionId).isLike(idPost);
Clients.Group("online").Like(idPost);
Clients.Group("online", Context.ConnectionId).updateNotification(notif);
//Clients.All.Like(idPost);
}