Use uploader class for carrierwave

lib/rich.rb

@@ -51,6 +51,9 @@ def self.image_styles=(image_styles)
   mattr_accessor :backend
   @@backend = :paperclip
 
+  mattr_accessor :uploader
+  @@uploader = "RichFileUploader"
+
   # configuration for picker
   mattr_accessor :placeholder_image
   @@placeholder_image = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" # a transparent pixel

lib/rich/backends/carrierwave.rb

@@ -7,8 +7,21 @@ module Backends
     module CarrierWave
       extend ActiveSupport::Concern
 
+      module DefaultCarrierwaveVersions
+        Rich.image_styles.each do |name,size|
+          unless Rich.uploader.constantize.versions.include? name
+            Rich.uploader.constantize.send :version, name.to_s do
+              process :resize_to_fit => size.gsub("#", "").split("x").map(&:to_i)
+            end
+          end
+        end
+      end
+
       included do
-        mount_uploader :rich_file_file_name, RichFileUploader
+        uploader = Rich.uploader.constantize
+        uploader.include(DefaultCarrierwaveVersions)
+
+        mount_uploader :rich_file_file_name, uploader
         alias_method :rich_file, :rich_file_file_name
         alias_method :rich_file=, :rich_file_file_name=
 
@@ -66,6 +79,7 @@ def clear_uri_cache
       module ClassMethods
 
       end
+
     end
   end
 

lib/rich/backends/rich_file_uploader.rb

@@ -31,11 +31,6 @@ def store_dir
   #   # do something
   # end
 
-  Rich.image_styles.each do |name,size|
-    version name do
-      process :resize_to_fit => size.gsub("#", "").split("x").map(&:to_i)
-    end
-  end
   # version :rich_thumb do
     # process :resize_to_fit => [100, 100]
   # end