now pages are sorted according to the page number in structure

app/controllers/admin/page_contents_controller.rb

@@ -3,10 +3,15 @@ class Admin::PageContentsController < OrbitAdminController
   def index
     @table_fields = [:page_id, :name,:version,:update_at,:last_modified, :category]
     @filter_fields = {}
-    @pages = Page.where(:module=>"page_content").order_by(sort)
+    if params[:sort].blank? && params[:keywords].blank?
+      @pages = get_pages_sorted(Page.root)
+      @pages = Kaminari.paginate_array(@pages).page(params[:page]).per(10)
+    else
+      @pages = Page.where(:module=>"page_content").order_by(sort)
+      @pages = search_data(@pages,[:name, :page_id]).page(params[:page]).per(10)
+    end
     @categories = @module_app.categories.enabled.authorized(current_user).collect{|c| [c.title, c.id]}
-    @pages = search_data(@pages,[:name, :page_id]).page(params[:page]).per(10)
-
+  
     render :partial => "index" if request.xhr?
   end
 
@@ -52,4 +57,18 @@ class Admin::PageContentsController < OrbitAdminController
   def update_params
     params.require(:page_context).permit!
   end
+
+  def get_pages_sorted(page)
+    pages = []
+    page.child_page.asc(:number).each do |cp|
+      if cp.child_page.blank? || cp.child_page.nil?
+        pages << cp if cp.module == "page_content"
+      else
+        pages << cp if cp.module == "page_content"
+        pages.concat(get_pages_sorted(cp))
+      end
+    end
+    pages 
+  end
+  
 end