...while making testing easier.
The gem is 'skinny_controllers'
It's inspired by trailblazer, but sticks more to how rails is laid out.
To use the default functionality, for each of your actions, you can just
render json: model
or however you want to render the response. model is a memoized method
that looks up an operation and policy and applies whatever custom logic
you want to implement.
Checkout the readme for details.
I'm using this gem in a production sass project with Ember as my
frontend and ActiveModelSerializers for helping structure JSON, so
support for skinny_controllers isn't going away ever.
Hope you like it