Making tags edition like other data type edition.

I wonder when this was last updated since all the code was ported on the new system ages ago (git says at least 2 years ago)

app/controllers/admin/tags_controller.rb

@@ -1,29 +1,35 @@
 class Admin::TagsController < Admin::BaseController
   cache_sweeper :blog_sweeper
 
-  def index
-    @tags = Tag.order('display_name').page(params[:page]).per(this_blog.admin_display_elements)
+  def index; redirect_to action: 'new' ; end
+  def new; new_or_edit; end 
+  def edit; new_or_edit; end
+
+  def destroy
+    destroy_a(Tag)
   end
 
-  def edit
-    @tag = Tag.find(params[:id])
-    @tag.attributes = params[:tag]
+  private
+
+  def new_or_edit
+    @tags = Tag.order('display_name').page(params[:page]).per(this_blog.admin_display_elements)
+    @tag = case params[:id]
+                when nil
+                  Tag.new
+                else
+                  Tag.find(params[:id])
+                end
 
+    @tag.attributes = params[:tag]
     if request.post?
-      old_name = @tag.name
+      old_name = @tag.name if @tag.id
 
       if @tag.save
-        # Create a redirection to ensure nothing nasty happens in the future
         Redirect.create(:from_path => "/tag/#{old_name}", :to_path => @tag.permalink_url(nil, true))
-
         flash[:notice] = _('Tag was successfully updated.')
-        redirect_to :action => 'index'
       end
     end
-  end
-
-  def destroy
-    destroy_a(Tag)
+    render 'new'
   end
 
 end

app/views/admin/tags/new.html.erb

@@ -0,0 +1,39 @@
+<% @page_heading = _('Manage tags') %>
+
+<div>
+  <div class='span4'>
+    <%= form_tag :action=>"edit", :id => @tag.id do %>
+    <%= error_messages_for 'tag' %>
+    <label for="tag_display_name"><%= _("Name")%>:</label>
+    <%= text_field 'tag', 'display_name', :class => 'medium' %>
+    <div class='form-actions'>
+      <%= cancel_or_save %>
+    </div>
+    <% end %>
+  </div>
+  <div class='span8'>
+    <table class="table table-striped">
+      <thead>
+        <tr class='noborder'>
+        <th><%= _("Display Name") %></th>
+        <th><%= _("Name") %></th>
+        <th><%= _("Articles") %></th>
+      </tr>
+      </thead>
+      <%= render_void_table(@tags.size, 3)  %>
+      <% for tag in @tags %>
+      <tr <%= alternate_class %>>
+        <td>
+          <%= link_to_edit tag.display_name, tag %>
+          <%= show_tag_actions tag %>
+        </td>
+        <td><%= tag.name %></td>
+        <td><%= tag.published_articles.count.to_s %></td>
+      </tr>
+      <% end %>
+      <%= display_pagination(@tags, 3)%>
+    </table>
+
+  </div>
+</div>
+