Improve admin menu for extension. Allow extensions to create admin tabs.

[#332 state:resolved]

app/controllers/admin/base_controller.rb

@@ -1,12 +1,21 @@
 class Admin::BaseController < Spree::BaseController
   helper :search
   layout 'admin'
-  
+
   before_filter :initialize_product_admin_tabs
   before_filter :initialize_order_admin_tabs
+  before_filter :initialize_extension_tabs
   before_filter :add_shipments_tab
 
 private
+  def add_extension_admin_tab(tab_args)
+    @extension_tabs << tab_args
+  end
+
+  def initialize_extension_tabs
+    @extension_tabs = []
+  end
+
   def add_shipments_tab
     @order_admin_tabs << {:name => 'Shipments', :url => "admin_order_shipments_url"}
   end

app/views/layouts/admin.html.erb

@@ -37,6 +37,9 @@
         <%= tab :reports %>
         <%= tab :configurations, :general_settings, :mail_settings, :tax_categories, :zones, :states, :gateway_configurations, :inventory_settings, :taxonomies, :label => 'configuration' %>
         <%= tab :users %>
+        <% @extension_tabs.each do |etab| -%>
+          <%= tab etab[0], etab[1] %>
+        <% end -%>
       </ul>
       <br class="clear" />
     </div>

lib/generators/extension/templates/extension.rb

@@ -13,6 +13,23 @@ class <%= class_name %> < Spree::Extension
   # end
   
   def activate
+
+    # Add your extension tab to the admin.
+    # Requires that you have defined an admin controller:
+    # app/controllers/admin/yourextension_controller
+    # and that you mapped your admin in config/routes
+
+    #Admin::BaseController.class_eval do
+    #  before_filter :add_yourextension_tab
+    #
+    #  def add_yourextension_tab
+    #    # add_extension_admin_tab takes an array containing the same arguments expected
+    #    # by the tab helper method:
+    #    #   [ :extension_name, { :label => "Your Extension", :route => "/some/non/standard/route" } ]
+    #    add_extension_admin_tab [ :yourextension ]
+    #  end
+    #end
+
     # make your helper avaliable in all views
     # Spree::BaseController.class_eval do
     #   helper YourHelper