Rails - Nested Objects Deletion

Question

I want to delete the nested object book, that is owned by a user. In the user#show page appears all the books related to that user. Besides each book there is a link to delete it. Here is my code:

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

And in the user#show page:

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

I know this is wrong, but how can I do it in order to deleted the wanted book?

The code you are showing us does not make much sense. In which controller is the `destroy` method? How are book and user related? — Mischa, May 30 '11 at 15:05

Mischa · Accepted Answer · 2011-05-30T15:24:15.730

3

When you are deleting you can forget about the fact that it's a nested resource. You know which book you are talking about, so you can just delete it directly.

Routes:

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

resources :books, :only => :destroy

Book controller:

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

View:

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

edited May 30 '11 at 15:24

answered May 30 '11 at 15:14

Mischa

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Thanks! Worked like a charm :) – Samth May 30 '11 at 15:23
Thank you for this clear answer! I've been searching for this information for 45 minutes. – Clay Aug 24 '11 at 14:09

Rails - Nested Objects Deletion

1 Answers1