public ActionResult Comment(VideoCommentViewModel model)
{
string returnUrl = Request.UrlReferrer.AbsolutePath + Request.UrlReferrer.Query;
string userId = User.Identity.GetUserId();
model.Comment.Author = helper.GetUsers(userId);
model.Comment.Video = helper.GetVideos(model.Video.ID);
helper.AddComment(model.Comment);
return(Redirect(returnUrl));
}