ruby-on-rails - Rails - 嵌套对象删除

Question

我想删除用户 拥有的嵌套对象book。在 user#show 页面中显示与该 user 相关的所有 books。除了每本书之外，还有一个链接可以删除它。这是我的代码:

routes.rb:

 resources :users do
   resources :books, :only => [:new, :create, :destroy]
 end

book_controller.rb:

def destroy
  @user= User.find(params[:user])
  @book = Book.find(params[:book])
  @book.destroy
  redirect_to current_user
end

在 user#show 页面中:

<%= link_to "Delete", user_book_path(current_user, book), :method => :delete %>

我知道这是错误的，但是我该怎么做才能删除想要的书呢？

Answer 1

当您删除时，您可能会忘记这是一个嵌套资源这一事实。你知道你说的是哪本书，所以你可以直接删除它。

路线:

resources :users do
  resources :books, :only => [:new, :create]
end

resources :books, :only => :destroy

书籍 Controller :

def destroy
  @book = Book.find(params[:id])
  @book.destroy
  redirect_to current_user
end

查看:

<%= link_to "Delete", book_path(book), :method => :delete %>