Rails-获取协会的所有者

Question

Hey. I'm starting in Rails and I guess my question is pretty easy. I have 2 models:

class Book < ActiveRecord::Base
belongs_to :owner
end

class Owner < ActiveRecord::Base
has_many :books
end

I'm trying to get the owner of the book on the show method, but everything I do says I can't find an Owner without an ID.

My controller has:

 def show
@book = Book.find(params[:id])
@owner= Owner.find(params[:owner_id])
end

And my view:

<%= link_to owner.name, owner %>

Thanks!

Answer 1

Follow the relationship from the book to the owner, you don't even have to do this in the controller.

def show
  @book = Book.find(params[:id])
end

In your views:

<%= link_to @book.owner.name, @book.owner %>

Answer 2

As you are using belongs_to :owner you can use it like this:

def show
  @book = Book.find(params[:id])
  @owner= book.owner
end

In your view you have to use these global @ variables: @book, @owner . book and owner won't work.