如何在 rails 命名路由上使用 ruby [英] How to use ruby on rails named routes

问题描述

我定义了这样的嵌套资源

I defined nested resources like this

resources :item, :only => [:create, :destroy, :update]  do
    resources :item_image, :only => [ :new, :create, :show ,  :destroy, :index]
end

我的路线是这样的(rake 路线的输出)

And my routes look like this (output of rake routes)

item_item_image_index GET    /item/:item_id/item_image(.:format)     item_image#index
                     POST   /item/:item_id/item_image(.:format)     item_image#create
 new_item_item_image GET    /item/:item_id/item_image/new(.:format) item_image#new
     item_item_image GET    /item/:item_id/item_image/:id(.:format) item_image#show
                     DELETE /item/:item_id/item_image/:id(.:format) item_image#destroy

我认为输出的第一列是命名路由".

I thought the first column of the output is "the named routes".

我想在我的一个视图中显示/item/:item_id/item_image(.:format) 的路径.

I want to show a path to /item/:item_id/item_image(.:format) in one of my view.

item_item_image_index GET    /item/:item_id/item_image(.:format)     item_image#index

我试过了:

<%= link_to "users", item_item_image_index  %>

还有这个

<%= link_to "users", item_images_path  %>

都不行

我收到未定义的局部变量或方法`item_images_path/item_item_image_index'"错误

I got "undefined local variable or method `item_images_path/item_item_image_index'" error

推荐答案

你应该尝试:

<%= link_to "users", item_item_image_index_url(@item) %>

或

<%= link_to "users", item_item_images_url(@item)  %>

或

<%= link_to "users", item_item_image_index_path(@item)  %>

或

<%= link_to "users", item_item_images_path(@item)  %>

不要忘记 url 需要一个 :item_id，因此您需要传递一个项目作为参数.

don't forget the url needs an :item_id, hence you need to pass an item as an argument.

实际上，您应该避免将该模型命名为ItemImage".一个项目有图像，这就是你需要知道的.你会得到更好的帮助名称，比如item_images_url"

actually, you should avoid naming that model "ItemImage". An Item has Images, that's what you need to know. you'll get better helper names like "item_images_url"

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