Automatic admin for AASM

active_admin_aasm.rb

  @resource.aasm.events.each do |event|
    member_action event.name, method: :post do
      resource.send(event) if resource.aasm.may_fire_event?(event.name)
    end
    action_item event, only: :show, if: -> { resource.aasm.may_fire_event?(event.name) } do
      link_to event.name.capitalize, action: event.name, controller: :ties, method: :post
    end

    batch_action event.name do |ids|
      klass = controller_name.classify.constantize
      count = 0
      klass.find(ids).each do |resource|
        next unless resource.aasm.may_fire_event?(event.name)
        resource.send("#{event.name}!".to_sym)
        count += 0
      end
      flash_message = "Succeeded with #{event.name} for #{view_context.pluralize count, controller_name}."
      flash_type = :notice
      if count<ids.count
        flash_message += " WARNING: Could not #{event.name} #{view_context.pluralize ids. WARNING-count, controller_name}." 
        flash_type = :alert
      end
      redirect_to collection_path, flash_type => flash_message
    end
  end

Where did you include this file to get it working? Thanks!