ruby on rails - Invoking named routes helpers in views ends with NameError -

invoking named routes helpers in views ends nameerror following configuration:

routes.rb:

scope :orders, as: :orders   scope '/:order_id', as: :order     post :returns, :to => 'order_returns#create'   end end 

$rake routes:

orders_order_returns post /orders/:order_id/returns(.:format) order_returns#create 

when add <%= orders_order_returns_path %> template, railsexit undefined local variable or method 'orders_order_returns_path' #<#<class:0x007faec10fe728>:0x007faec10dc8d0>...

executing rails.application.routes.named_routes.helpers.map(&:to_s) in console on exception page returns:

["spree_path", "orders_order_returns_path", "rails_info_properties_path", "rails_info_routes_path", "rails_info_path", "rails_mailers_path", "spree_url", "orders_order_returns_url", "rails_info_properties_url", "rails_info_routes_url", "rails_info_url", "rails_mailers_url"] 

my question is: why using named routes path/url helpers in view ends exception when visible in consoles ?

i found answer here:

because you're calling inside spree template need prefix main_app., main_app.products_starting_with_path

here's release note spree:

conversely, reference routes main application within controller, view or template spree, must use main_app routing proxy

using main_app routing proxy solved described problem :)