new feature in desktop for uploading wallpapers or putting url link

app/models/desktop/desktop.rb

@@ -10,6 +10,7 @@ class Desktop
   has_and_belongs_to_many :desktop_widgets, :autosave => true
   
   has_many  :sections, :autosave => true, :dependent => :destroy
+  has_many  :desktop_wallpapers, :autosave => true, :dependent => :destroy
   # has_many :desktop_widgets, :autosave => true, :dependent => :destroy
 
   before_create :initialize_section

app/models/desktop/desktop_wallpaper.rb

@@ -0,0 +1,11 @@
+class DesktopWallpaper
+	include Mongoid::Document
+  	include Mongoid::Timestamps
+  	mount_uploader :file, ImageUploader
+
+  	field :type
+  	field :link
+
+  	belongs_to :desktop
+
+end