How to use ActiveAdmin on models using has_many through association?

Question

I am using ActiveAdmin gem in my project.

I have 2 models using has_many through association. The database schema looks exactly the same as the example in RailsGuide

Answer 1

In answer tomblomfield follow up question in comments:

Try the following in your AA ActiveAdmin.register Model do block:

  controller do
    def scoped_collection
      YourModel.includes(:add_your_includes_here)
    end
  end

This should lazy load all your associations for each index page in a separate query

HTH