Change "_filename" to "_identifier" for carrierwave

app/models/design/design.rb

@@ -31,7 +31,7 @@ class Design
  
  def files_with_duplicate?
    [self.javascripts, self.images,self.themes].each do |objects_hash|
-     ary = objects_hash.collect{ |k|  k.file_filename}
+     ary = objects_hash.collect{ |k|  k.file_identifier}
      ary.compact!
      # debugger
      return true if(ary.count!=ary.uniq.count)
@@ -42,7 +42,7 @@ class Design
  def files_with_noname?
    [self.javascripts, self.images,self.themes].each do |objects_hash|
      objects_hash.each{ |k| 
-       return true if(k.file_filename.nil? && !k.to_save?)
+       return true if(k.file_identifier.nil? && !k.to_save?)
         }
    end
    false
@@ -121,7 +121,7 @@ class Design
   
   def process_object(object)
     if object.to_save
-      if object.file_filename.nil?
+      if object.file_identifier.nil?
         new_object = self.send(object._type.downcase.pluralize).build(object.attributes)
         new_object.file = object.file
         object.destroy