app/controllers/pulitzer/posts_controller.rb in pulitzer-0.12.3 vs app/controllers/pulitzer/posts_controller.rb in pulitzer-0.12.4

@@ -52,15 +52,18 @@
   def show_slug
     render partial: 'show_slug', locals: { post: @post, version: @version }
   end
 
   def update_slug
-    @post.update_attributes(post_params)
-    if @version.preview?
-      route                       = "#{Pulitzer.preview_namespace}_#{@post.post_type.name.parameterize('_')}_path"
-      @preview_path               = main_app.public_send(route, @post.slug) if main_app.respond_to?(route)
+    if @post.update_attributes(post_params)
+      if @version.preview?
+        route                       = "#{Pulitzer.preview_namespace}_#{@post.post_type.name.parameterize('_')}_path"
+        @preview_path               = main_app.public_send(route, @post.slug) if main_app.respond_to?(route)
+      end
+      render partial: 'pulitzer/posts/edit', locals: { version: @version, post: @post }
+    else
+      render partial: 'form_slug', locals: { post: @post, version: @version }, status: :conflict
     end
-    render partial: 'pulitzer/posts/edit', locals: { version: @version, post: @post }
   end
 
   protected
 
   def post_params