Add the JavaScript for sortable table rows

Author: adamlogic

README.md

@@ -23,6 +23,12 @@ end
 gem 'activeadmin-sortable'
 ```
 
+### Include the JavaScript in active_admin.js
+
+```javascript
+//= require activeadmin-sortable
+```
+
 ### Configure your ActiveAdmin Resource
 
 ```ruby

app/assets/javascripts/activeadmin-sortable.js

@@ -0,0 +1,24 @@
+//= require jquery-ui
+
+(function($) {
+  $(document).ready(function() {
+    $('.handle').closest('tbody').activeAdminSortable();
+  });
+
+  $.fn.activeAdminSortable = function() {
+    this.sortable({
+      update: function(event, ui) {
+        var url = ui.item.find('[data-sort-url]').data('sort-url');
+
+        $.ajax({
+          url: url,
+          type: 'post',
+          data: { position: ui.item.index() + 1 },
+          success: function() { window.location.reload() }
+        });
+      }
+    });
+
+    this.disableSelection();
+  }
+})(jQuery);

lib/activeadmin-sortable.rb

@@ -1,5 +1,6 @@
 require 'activeadmin-sortable/version'
 require 'activeadmin'
+require 'rails/engine'
 
 module ActiveAdmin
   module Sortable
@@ -22,8 +23,14 @@ def sortable_handle_column
         end
       end
     end
-  end
 
-  ::ActiveAdmin::ResourceDSL.send(:include, Sortable::ControllerActions)
-  ::ActiveAdmin::Views::TableFor.send(:include, Sortable::TableMethods)
+    ::ActiveAdmin::ResourceDSL.send(:include, ControllerActions)
+    ::ActiveAdmin::Views::TableFor.send(:include, TableMethods)
+
+    class Engine < ::Rails::Engine
+      # Including an Engine tells Rails that this gem contains assets
+    end
+  end
 end
+
+