fix widget and fronted setting interface. checked with Spen

app/controllers/admin/page_parts_controller.rb

@@ -31,7 +31,7 @@ class Admin::PagePartsController < OrbitBackendController
 
     @selected={
       :module_app=> @part.module_app ? @part.module_app : nil,
-      :app_frontend_url=> @part.widget_path, #@module_apps.first
+      :app_frontend_url=> @part.widget_path || "default_widget", #@module_apps.first
       :category=>nil, #fetch by method: get_categories_and_tags
       :tag=>nil, #fetch by method: get_categories_and_tags
       :page_frontend_data_count=>nil,

app/controllers/admin/pages_controller.rb

@@ -121,7 +121,7 @@ include Admin::FrontendWidgetInterface
     @index = params[:field_seri].to_i
     @item = Page.find(params[:id]) rescue Page.new 
     @selected = {
-      :module_app=> (@item.module_app || ModuleApp.find(params[:module_app_id]) ),
+      :module_app=> (ModuleApp.find(params[:module_app_id]) || @item.module_app   ),
       :default_widget_field=>params[:widget_field_value]
     }
     # @choosen_field = params[:widget_field_value]
@@ -160,7 +160,6 @@ include Admin::FrontendWidgetInterface
     if @item.module_app && @item.module_app.key == 'page_content' && @item.page_contexts.blank?
       @item.page_contexts.build(:create_user_id => current_user.id, :update_user_id => current_user.id )
     end
-
     if @item.update_attributes(params[:page])
       flash[:notice] = t('update.success.page')
       respond_to do |format|