public static void TrackChange(ClanciIzmjene articleChange)
 {
     Connection.dm.ClanciIzmjene.Add(articleChange);
     Connection.dm.SaveChanges();
 }
        protected void saveArticleSubmit_Click(object sender, EventArgs e)
        {
            try
            {
                if (documentFile.PostedFile.ContentLength == 0)
                    article = DAClanci.Select(articleId);
                else if (documentFile.PostedFile != null && documentFile.PostedFile.FileName != null
                          && documentFile.PostedFile.FileName != "")
                {
                    string extension = "";
                    article = new Clanci();
                    article.ClanakID = articleId;

                    extension = System.IO.Path.GetExtension(documentFile.PostedFile.FileName);
                    if (extension == ".pdf")
                    {
                        article.DokumentType = documentFile.PostedFile.ContentType;
                        article.Dokument = new byte[documentFile.PostedFile.ContentLength];
                        documentFile.PostedFile.InputStream.Read(article.Dokument, 0, documentFile.PostedFile.ContentLength);
                        string filename = article.ClanakID + extension;
                        System.IO.File.WriteAllBytes(Server.MapPath("/Content/articles/") + filename, article.Dokument);
                        article.DokumentPath = "~/Content/articles/" + filename;
                    }
                    else
                    {
                        errorLabel.Text = "Podržani format dokumenta je pdf.";
                        error_label.Visible = true;
                        return;
                    }
                }

                if (typesList.SelectedIndex != 0)
                    article.VrstaID = Convert.ToInt32(typesList.SelectedValue);
                if (themeList.SelectedIndex != 0)
                    article.TemaID = Convert.ToInt32(themeList.SelectedValue);

                article.Naslov = titleInput.Text.Trim();
                article.Autori = authorsInput.Text.Trim();
                article.KljucneRijeci = keyWordsInput.Text.Trim();
                article.DatumKreiranja = DateTime.Now;
                article.DatumIzmjene = DateTime.Now;
                article.Status = true;
                article.KorisnikID = Convert.ToInt32(User.Identity.Name);
                article.Tekst = wysiwyg.InnerText;

                List<string> tags = new List<string>();

                foreach (string tag in tagsInput.Text.Split(','))
                {
                    if (tag.Trim() != "")
                        tags.Add(tag.Trim());
                }

                DAClanci.Update(article, tags);

                //Praćenje izmjena članka
                ClanciIzmjene articleChange = new ClanciIzmjene();
                articleChange.KorisnikID = Convert.ToInt32(User.Identity.Name);
                articleChange.ClanakID = articleId;
                articleChange.Datum = DateTime.Now;
                articleChange.Opis = editDescriptionInput.InnerText;

                DAClanci.TrackChange(articleChange);

                successLabel.Text = "Uspješno ste sačuvali izmjene.";
                error_label.Visible = false;
                success_label.Visible = true;
            }
            catch (Exception ex)
            {
                errorLabel.Text = ex.Message;
                if (ex.InnerException != null)
                    errorLabel.Text += "\n" + ex.InnerException;
                error_label.Visible = true;
            }
        }