ActiveAdmin with friendly id

Question

I am using friendly_id in my rails 4 application with slug. Now I am using active_admin gem.

Problem:

When I click on show link from active admin for Group resource, It is throwing the following exception:

ActiveRecord::RecordNotFound at /admin/groups/username20-s-group-1

I guess, I need to override some of the active_admin default functions?

Answer 1

There are cases, when application has quit a few resources, hence in order to keep it DRY there is a nice solution requiring few lines of code for whole application - simply override activeadmin's resource controller.

Create config/initializers/active_admin_monkey_patching.rb file with the following content:

ActiveAdmin::ResourceController.class_eval do
  def find_resource
    finder = resource_class.is_a?(FriendlyId) ? :slug : :id
    scoped_collection.find_by(finder => params[:id])
  end
end

Do not forget to restart the server.

Answer 2

A better approach to @AndreyDeineko's is to override ActiveAdmin::ResourceController's find_resource method in config/initialisers/active_admin.rb and leverage the methods provided by FriendlyId (5.x at this point):

In config/initialisers/active_admin.rb:

ActiveAdmin.setup do |config|
  # == Friendly Id addon
  ActiveAdmin::ResourceController.class_eval do
    def find_resource
      if resource_class.is_a?(FriendlyId)
        scoped_collection.friendly.find(params[:id])
      else
        scoped_collection.find(params[:id])
      end
    end
  end
  # initial config
end

This looks much cleaner to me, than putting it in the application controller, as it is related to the configuration of Active Admin.

Answer 3

Found solution for the problem:

In your app/admin/[ResourceName.rb] add:

  # app/admin/group.rb

  # find record with slug(friendly_id)
  controller do
    def find_resource
      begin
        scoped_collection.where(slug: params[:id]).first!
      rescue ActiveRecord::RecordNotFound
        scoped_collection.find(params[:id])
      end
    end
  end

This solved my problem.