update

app/controllers/application_controller.rb

@@ -44,6 +44,9 @@ class ApplicationController < ActionController::Base
       puts @files
       return @files
   end
-  
-  
+ 
+  def checkDir
+    files = file_directory(params[:path])
+    render :json => {:file => files , :current => @current_dir}
+  end
 end

app/controllers/volume_controller.rb

@@ -38,13 +38,6 @@ class VolumeController < ApplicationController
     redirect_to '/volume/info'
   end
   
-  
- 
-  def checkDir
-    files = file_directory(params[:path])
-    render :json => {:file => files , :current => @current_dir}
-  end
-  
   def volume_mount
     @config = get_conf
 	  volume_name = params[:volume_name]

app/views/home/index.html.erb

@@ -207,7 +207,7 @@
     function change_directory(directory){
       $.ajax({
       method: "POST",
-      url: "/volume/changeDir",
+      url: "/application/changeDir",
       data: { path: directory },
       success  : function(result){
           $("#table_div").empty();