Rails，通過params獲取引擎控制器動作的URL

Question

我有兩個孤立的發動機Offer和Prices 。

我如何從提供引擎視圖獲取價格引擎控制器的url，使用hash與params？

#config/routes.rb
Rails.application.routes.draw do
  mount Offers::Engine, at: "offers", as: "offers_routes"
  mount Prices::Engine, at: "prices", as: "prices_routes"
end

#offers/offers_controller.rb
class Offers::OffersController
  def show
  end
end

#prices/prices_controller.rb
class Prices::PricesController
  def index
  end
end

#views/offers/show.html.slim
= link_to "Prices", { action:"index", controller:"prices/prices" }

在這種情況下link_to引發錯誤：

*** ActionController::RoutingError Exception: No route matches {:controller=>"prices/prices"}

我知道offers_routes.offers_path助手，但在我的情況下，我應該使用hash與params。

Answer 1

如果使用引擎路由，則必須傳遞use_route參數。

= link_to "Prices", { action:"index", controller:"prices/prices", use_route:"prices_routes" }

來源鏈接： https ： //github.com/rails/rails/blob/v3.2.13/actionpack/lib/action_dispatch/routing/route_set.rb#L442

但這是更明確的解決方案：

= link_to "Prices", prices_routes.url_for(action:"index", controller:"prices/prices")