gem 'activeadmin-dragonfly', github: 'stefanoverna/activeadmin-dragonfly'

class BlogPost < ActiveRecord::Base attr_accessible :image, :retained_image, :remove_image image_accessor :image end

ActiveAdmin.register BlogPost do form do |f| # ... f.input :image, as: :dragonfly f.input :image, as: :dragonfly, input_html: { components: [:preview, :upload, :url, :remove ] } # ... end end