How should I override SubscriptionsController?

[ericgross]

I'd like to set a different path in after_new_subscription_path - what is the best way to do that?

[ericgross]

I see that I can override this by setting after_new_subscription_path in my ApplicationController. How though would I override other things that are not referencing super?

[yas4891]

@ericgross I suggest monkey-patching or submitting a PR where you change the koudoku code to allow that

[rvalyi]

I did that putting this Gem in the Gemfile of my app:

gem "rails_engine_decorators", git: 'https://github.com/atd/rails_engine_decorators.git'

and creating a file called app/decorators/controllers/koudoku/subscriptions_controller_decorator.rb with custom overrides such as:

Koudoku::SubscriptionsController.class_eval do

    def index

      # don't bother showing the index if they've already got a subscription.
      if current_owner and current_owner.subscription.present?
        redirect_to koudoku.edit_owner_subscription_path(current_owner, current_owner.subscription)
      end

      # Don't prep a subscription unless a user is authenticated.
      unless no_owner?
        # we should also set the owner of the subscription here.
        @subscription = ::Subscription.new({Koudoku.owner_id_sym => @owner.id})
        @subscription.subscription_owner = @owner
      end

      render layout: 'landing_page' # THIS IS CUSTOM
    end

Hopes this helps

[gwalshington]

I recently implemented gem "rails_engine_decorators" for the reason above, and besides local development, it is incompatible with Rails 5. It gives the error DEPRECATION WARNING: alias_method_chain is deprecated. Just a heads up to anyone else who finds this.

[donnfelker]

@gwalshington I'm also on Rails 5. What you can do is, and which is actually much easier, is to provide a custom after_new_subscription_path method in your root ApplicationController.

This works because if you look at Koudoku's Subscription Controller here: https://github.com/andrewculver/koudoku/blob/master/app/controllers/koudoku/subscriptions_controller.rb#L178 it checks for a superclass delegate method. If the superclass does not have an implementation of after_new_subscription_path then it will use the default path that is built into Koudoku.

To use your own path add the following to your ApplicationController (in your app):

  def after_new_subscription_path(owner, subscription)
    # Decide where you want to send the user.  
    # This is using the root / url as an example
    main_app.root_path
  end

Now, when a new subscription is created your code will be invoked because https://github.com/andrewculver/koudoku/blob/master/app/controllers/koudoku/subscriptions_controller.rb#L178 see's that you have an implementation in the superclass.

I hope that helps! 😄