Rails 4 - How to render JSON regardless of requested format?

Question

I\'d like a Rails controller (all of them, actually, it\'s an API) to render JSON always always.

I don\'t want Rails to return \"route not found\", or try and fail t

Answer 1

I tried the above solutions and it didn't solve my use case. In some of the controllers of my Rails 4.2 app, there was no explicit render called. For example, a service object was called and nothing was returned. Since they are json api controllers, rails was complaining with a missing template error. To resolve I added this to our base controller.

  def render(*args)
    options = args.first
    options.present? ? super : super(json: {}, status: :ok)
  end

It's a large app I'm converting to Rails 5, so this is just a safety measure as I removed the RocketPants gem that seemed to do this automatically.

As a note, my controllers inherit from ActionController::Base