manual confirmation from admin (rails_admin) using custom action

rails_admin.rb

# located at #{Rails.root}/config/initializers/rails_admin.rb
# RailsAdmin config file. Generated on March 01, 2012 17:53
# See github.com/sferik/rails_admin for more informations

RailsAdmin.config do |config|

  config.current_user_method { current_user } # auto-generated

  config.main_app_name = ['Timetracker', 'Admin']
  config.authorize_with do
    redirect_to new_user_session_path unless current_user.try(:admin?)
  end

  # Use a specific role for ActiveModel's :attr_acessible :attr_protected
  # Default is :default
  # current_user is accessible in the block if you want to make it user specific.
  config.attr_accessible_role { :admin }


  # config action for admin
  config.actions do
    # root actions
    dashboard do                     # mandatory
      i18n_key :dash
    end
    # collection actions
    index                         # mandatory
    new
    export
    history_index
    bulk_delete
    confirm_users
    # member actions
    show
    edit
    delete
    history_show
    show_in_app
  end

  
end

rails_admin_confirm_users.rb

# located at #{Rails.root}/lib/rails_admin_confirm_users.rb
require 'rails_admin/config/actions'
require 'rails_admin/config/actions/base'

module RailsAdminConfirmUsers
end

module RailsAdmin
  module Config
    module Actions
      class ConfirmUsers < RailsAdmin::Config::Actions::Base
        RailsAdmin::Config::Actions.register(self)

        register_instance_option :collection do
          true
        end

        register_instance_option :link_icon do
          'icon-check'
        end

        register_instance_option :controller do
          Proc.new do
            @objects.each do |user|
              user.confirm!
            end
          end
          flash[:notice] = "You have confimed for #{@objects.length} users."

          redirect_to back_or_index
        end
        
      end
    end
  end
end