Minicorefixer

src/Controllers/BlogController.cs

@@ -222,6 +222,13 @@ public async Task<IActionResult> UpdatePost(Post post)
             }
 
             var existing = await this.blog.GetPostById(post.ID).ConfigureAwait(false) ?? post;
+            var existingPostWithSameSlug = await this.blog.GetPostBySlug(existing.Slug).ConfigureAwait(true);
+
+            if (existingPostWithSameSlug != null && existingPostWithSameSlug.ID != post.ID)
+            {
+
+                existing.Slug = Models.Post.CreateSlug(post.Title + DateTime.UtcNow.ToString("yyyyMMddHHmm"),50);
+            }
             string categories = this.Request.Form[Constants.categories];
             string tags = this.Request.Form[Constants.tags];
 

src/Models/Post.cs

@@ -38,13 +38,20 @@ public class Post
         public string Title { get; set; } = string.Empty;
 
         [SuppressMessage("Globalization", "CA1308:Normalize strings to uppercase", Justification = "The slug should be lower case.")]
-        public static string CreateSlug(string title)
+        public static string CreateSlug(string title, int maxLength = 50)
         {
+
             title = title?.ToLowerInvariant().Replace(
                 Constants.Space, Constants.Dash, StringComparison.OrdinalIgnoreCase) ?? string.Empty;
             title = RemoveDiacritics(title);
             title = RemoveReservedUrlCharacters(title);
 
+            // control of character limitations
+            if (title.Length > maxLength)
+            {
+                title = title.Substring(0, maxLength);
+            }
+
             return title.ToLowerInvariant();
         }
 

src/Views/Blog/Edit.cshtml

@@ -21,7 +21,7 @@
         <br />
 
         <label asp-for="@Model.Slug" class="label">Slug</label>
-        <input asp-for="@Model.Slug" placeholder="The URL name" aria-describedby="desc_slug" />
+    <input asp-for="@Model.Slug" placeholder="The URL name" maxlength="50" aria-describedby="desc_slug" />
         <span class="desc" id="desc_slug">The part of the URL that identifies this blog post</span>
         <br />