How can I find a resource path in a model when using an engine?

Question

While using Spree, a Rails ecommerce engine, I was trying to save the products_path in my Spree::Product model for tracking.

Rails.application.routes.url_helpers.products_path
Rails.application.routes.url_helpers.products_url(:host => "example.com")

But using that solution just gave me the following error.

NoMethodError: undefined method `products_path' for #<Module:0x007fe9e208e908>

Much frustration....

Shouldnt it be `Rails.application.routes.url_helpers.products_path`? Is it a typo? — Amit Badheka, Aug 20 '15 at 20:12
@AmitBadhekaPykihStaff I don't understand what you mean. What you have typed is identical to what is in the question. Are you asking why doesn't that work? — Dan Williams, Aug 20 '15 at 21:28

Dan Williams · Answer 1 · 2015-08-20T20:09:42.530

When using an Rails Engine, you need to use the Engine's route helpers rather than the main Rails application route helpers.

Spree::Core::Engine.routes.url_helpers.products_path
Spree::Core::Engine.routes.url_helpers.products_url(:host => "example.com")

Bonus tip:

If you want to get rid of the :host => "example.com" paramater, you can add a host designator in your environment configuration file.

Just like for the url_helpers, for an engine, you will need to add the default under the Engine routes.

# in config -> environments -> development.rb

Spree::Core::Engine.routes.default_url_options[:host] = 'localhost:3000'

Note: this does not set a default host for Rails.application.routes.url_helpers ;-)

I'd like to give credit to @theo-scholiadis for leading me down the right path. Thanks!! — Dan Williams, Aug 20 '15 at 21:40

1 Answers1