Fix

Author: Stefano Verna

lib/active_admin/dragonfly/engine.rb

@@ -2,9 +2,16 @@
 
 module ActiveAdmin
  module Dragonfly
+
  class Engine < ::Rails::Engine
+ initializer "Railsyard precompile hook", group: :all do |app|
+ # check if someone already initialized Dragonfly for Rails
+ unless ActiveRecord::Base.methods.include? :image_accessor
+ require 'dragonfly/rails/images'
+ end
+ # in any case we add the Dragonfly[:images] app as middleware
+ app.config.middleware.insert 1, 'Dragonfly::Middleware', :images
 
- initializer "Railsyard precompile hook" do |app|
  app.config.assets.precompile += [
  "active_admin/active_admin_dragonfly.js",
  "active_admin/active_admin_dragonfly.css"
@@ -14,7 +21,7 @@ class Engine < ::Rails::Engine
  config.to_prepare do
  ActiveAdmin.application.register_stylesheet "active_admin/active_admin_dragonfly.css", :media => :screen
  end
-
  end
+
  end
 end