ruby-on-rails - 设计中的嵌套资源

Question

我是 Rails 的新手，我需要一些关于我的路线和正确路由逻辑的建议。我正在开发一个非常简单的应用程序，用户可以在其中发布列表。用户(设计模型)有很多列表，列表属于一个用户。我的 list 表中有一个 user_id:integer。当用户成功登录时，我希望他们在相应的路由页面上看到他们的列表。我像这样创建了嵌套路由:

devise_for :users, :paths => 'users'

resource :users do
  resource :lists
end

这是我的 rake 路由的输出

new_user_session GET    /users/sign_in(.:format)       devise/sessions#new
            user_session POST   /users/sign_in(.:format)       devise/sessions#create
    destroy_user_session DELETE /users/sign_out(.:format)      devise/sessions#destroy
           user_password POST   /users/password(.:format)      devise/passwords#create
       new_user_password GET    /users/password/new(.:format)  devise/passwords#new
      edit_user_password GET    /users/password/edit(.:format) devise/passwords#edit
                         PATCH  /users/password(.:format)      devise/passwords#update
                         PUT    /users/password(.:format)      devise/passwords#update
cancel_user_registration GET    /users/cancel(.:format)        devise/registrations#cancel
       user_registration POST   /users(.:format)               devise/registrations#create
   new_user_registration GET    /users/sign_up(.:format)       devise/registrations#new
  edit_user_registration GET    /users/edit(.:format)          devise/registrations#edit
                         PATCH  /users(.:format)               devise/registrations#update
                         PUT    /users(.:format)               devise/registrations#update
                         DELETE /users(.:format)               devise/registrations#destroy
             users_lists POST   /users/lists(.:format)         lists#create
         new_users_lists GET    /users/lists/new(.:format)     lists#new
        edit_users_lists GET    /users/lists/edit(.:format)    lists#edit
                         GET    /users/lists(.:format)         lists#show
                         PATCH  /users/lists(.:format)         lists#update
                         PUT    /users/lists(.:format)         lists#update
                         DELETE /users/lists(.:format)         lists#destroy
                   users POST   /users(.:format)               users#create
               new_users GET    /users/new(.:format)           users#new
              edit_users GET    /users/edit(.:format)          users#edit
                         GET    /users(.:format)               users#show
                         PATCH  /users(.:format)               users#update
                         PUT    /users(.:format)               users#update
                         DELETE /users(.:format)               users#destroy
                    root GET    /                              static_pages#home

我怎样才能让我的路线实现这一目标:

/users/:user_id/lists(.:format)

这也是确保用户只能访问他的列表的一个步骤。

Answer 1

您应该使用resources 方法而不是resource:

resources :users do
  resources :lists
end

看看这个Rails Guides article它包含很好的例子和解释。

为此:

It would also be a stepping point to make sure that the user has access only to his lists.

您可以使用 devise's helper methods 之一:当前用户:

current_user.lists

UPD:但我认为将列表创建为单独的(非嵌套的)资源会更容易。像这样:

# config/routes.rb
Rails.application.routes.draw do
  # ...
  resources :lists
end

# app/controllers/lists_controller.rb
class ListsController < ApplicationController
  before_action :authenticate_user!

  def index
    @lists = current_user.lists
  end
end

因此，在 /lists 路径中，一些用户将只能访问他自己的列表。就是这样。