Decorators

Active Admin supports the use of decorators for resources. Resources will be be decorated for the index and show blocks. The draper gem is recommended but not required (more on requirements below).

Configuration

ActiveAdmin.register Post do
  decorate_with PostDecorator
end

Example Usage

This example uses draper.

# Gemfile
gem 'draper'

Assuming a post and a post decorator

class Post < ActiveRecord::Base; end

class PostDecorator < ApplicationDecorator
  decorates :post

  def image
    h.image_tag model.image_url
  end
end

Then the following is possible

ActiveAdmin.register Post do
  decorate_with PostDecorator

  index do
    column(:title)
    column(:image)
  end

  show do
    attributes_table do
      row(:title)
      row(:image)
    end
  end
end