public ActionResult Create(Comment comment)
        {
            if (ModelState.IsValid)
            {
                comment.Author = User.Identity.Name;
                cdb.Comments.Add(comment);
                cdb.SaveChanges();

                Post        post  = pdb.Posts.Find(comment.RefferedPost);
                IntegerData idata = new IntegerData();
                idata.Data = comment.ID;
                post.Comments.Add(idata);

                pdb.Entry(post).State = EntityState.Modified;
                pdb.SaveChanges();



                //if is hitchhiker
                if (comment.Hitchhiker == true)
                {
                    Hitchhiker hitch = new Hitchhiker()
                    {
                        Name = comment.Author, Phone = comment.PhoneNumber, PostID = comment.RefferedPost
                    };
                    hdb.Hitchhikers.Add(hitch);
                    hdb.SaveChanges();
                }
                return(RedirectToAction("Details", "Post", new { id = post.ID }));
            }
            else
            {
                return(View(comment));
            }
        }
        public ActionResult Edit(Comment comment)
        {
            if (ModelState.IsValid)
            {
                Hitchhiker h1 = hdb.Hitchhikers.Where(h => h.Name == comment.Author).SingleOrDefault();

                if (comment.Hitchhiker == false)
                {
                    if (h1 != null)
                    {
                        hdb.Hitchhikers.RemoveRange(hdb.Hitchhikers.Where(c => c.PostID == h1.PostID));
                    }
                }
                else
                {
                    if (h1 != null)
                    {
                        h1.Phone            = comment.PhoneNumber;
                        hdb.Entry(h1).State = EntityState.Modified;
                    }
                    else
                    {
                        h1 = new Hitchhiker()
                        {
                            Name = comment.Author, Phone = comment.PhoneNumber, PostID = comment.RefferedPost
                        };
                        hdb.Hitchhikers.Add(h1);
                    }
                }
                hdb.SaveChanges();
                cdb.Entry(comment).State = EntityState.Modified;
                cdb.SaveChanges();
                return(RedirectToAction("Index", "Users"));
            }
            return(RedirectToAction("Index", "Users"));
        }