资源和控制器生成器之间的区别

when I do

当我做

rails g model user name:string
rails g controller users index create new destroy show

and edit config/routes.rb to add:

并编辑config / routes.rb以添加：

resource :users

bundle exec rake routes gives:

捆绑exec rake路线给出：

     users POST   /users(.:format)      {:action=>"create", :controller=>"users"}
 new_users GET    /users/new(.:format)  {:action=>"new", :controller=>"users"}
edit_users GET    /users/edit(.:format) {:action=>"edit", :controller=>"users"}
           GET    /users(.:format)      {:action=>"show", :controller=>"users"}
           PUT    /users(.:format)      {:action=>"update", :controller=>"users"}
           DELETE /users(.:format)      {:action=>"destroy", :controller=>"users"}

however, when I do

但是，当我这样做的时候

rails g resource users name:string

(which automatically adds resources :users to config/routes.rb) bundle exec rake routes

（自动添加资源：用户到config / routes.rb）捆绑exec rake路由

I get

我明白了

    users GET    /users(.:format)          {:action=>"index", :controller=>"users"}
          POST   /users(.:format)          {:action=>"create", :controller=>"users"}
 new_user GET    /users/new(.:format)      {:action=>"new", :controller=>"users"}
edit_user GET    /users/:id/edit(.:format) {:action=>"edit", :controller=>"users"}
     user GET    /users/:id(.:format)      {:action=>"show", :controller=>"users"}
          PUT    /users/:id(.:format)      {:action=>"update", :controller=>"users"}
          DELETE /users/:id(.:format)      {:action=>"destroy", :controller=>"users"}

So my question is,

所以我的问题是，

when I generate a controller how can I get the correct helper methods to make link_to 'Destroy', instance, :method=> :delete work?

当我生成一个控制器时，我怎样才能获得正确的帮助方法来使link_to'Destroy'，实例，：method =>：删除工作？

Because currently it gives an error user_path is not defined.

因为当前它给出了错误，所以没有定义user_path。

4 个解决方案

#1

You should call

你应该打电话

rails g controller user index create new destroy show

instead of

代替

rails g controller users index create new destroy show

in order to get resources :users to give you the helpers you want.

为了获得资源：用户可以为您提供所需的帮助。

The latter causes Rails to assume that users is a singular object, and that resources :users should create what is called a singular resource:

后者导致Rails假定用户是单个对象，并且资源：用户应该创建所谓的单一资源：

http://guides.rubyonrails.org/routing.html#singular-resources

as a result, user_path is undefined, whereas users_path is defined.

因此，user_path未定义，而users_path已定义。

#2

When you use rails g controller and specify the method names, the generator only maps specific routes to the routes file. rails g resource assumes that you want the whole resource functionality and will map resources.

使用rails g controller并指定方法名称时，生成器仅将特定路由映射到routes文件。 rails g resource假定您需要整个资源功能并将映射资源。

In order to fix this, just go into your routes file and replace the specific mappings with a resources call.

为了解决这个问题，只需进入您的路由文件并用资源调用替换特定的映射。

resources :users

#3

What I really wanted was a way of creating a working (with correct delete/show paths) controller for an existing model (as described in the question) but just adding "resource :x" and generating the controller wasn't enough.

我真正想要的是为现有模型创建一个工作（具有正确的删除/显示路径）控制器的方法（如问题中所述），但只是添加“resource：x”并生成控制器是不够的。

I ended up using the scaffold_controller generator. It doesn't create any migrations or models, but it does generate a resource with views and rake paths command shows the correct paths for delete and show to work.

我最终使用了scaffold_controller生成器。它不会创建任何迁移或模型，但它会生成带有视图和rake paths命令的资源命令显示删除和显示工作的正确路径。

#4

You can run following commands in the console:

您可以在控制台中运行以下命令：

$rails g model user name:string
$rails g scaffold_controller User

And add this code line to the file routes.rb:

并将此代码行添加到routes.rb文件中：

resources :users

#1