undefined method `helper_method' for RailsAdmin::ApplicationController:Class (NoMethodError)

[mmichael0413]

Does anyone know how to fix the issue with Rails 5 api mode no longer supporting helper_method in controllers that inherit from ActionController::API?

I'm trying to use rails_admin on my Heroku app (without Devise) and I can't get past this issue.

The full error:

! Unable to load application: NoMethodError: undefined method `helper_method' for RailsAdmin::ApplicationController:Class
2016-09-05T05:21:02.610870+00:00 app[web.1]: /app/vendor/bundle/ruby/2.2.0/gems/rails_admin-1.0.0.rc/app/controllers/rails_admin/application_controller.rb:18:in `<class:ApplicationController>': undefined method `helper_method' for RailsAdmin::ApplicationController:Class (NoMethodError)

Devise had a workaround heartcombo/devise#3732.

Any suggestions?

[mshibuya]

1.0.0.rc has the issue, please try the master branch.