Correct way to build an AR object with multiple associations?

rubyonrails-talk
1

I have a Book resource that belongs both to a User and to an Isbn. What is the recommended way of building a new Book record in this type of situation?

class Book < ActiveRecord::Base   belongs_to :user   belongs_to :isbn end

Currently I'm doing the following:

@isbn = Isbn.find(...) book = @isbn.books.build(...) book.user_id = @user.id book.save

Is this the way it's supposed to be done? I know that it's preferred to interact with dependent resources through their associations. So adding the user_id manually seems a bit clunky to me. But I'm not sure how else to do it!

Thanks in advance.

2

Lisa Klein wrote:

book.user_id = @user.id

Is this the way it's supposed to be done? I know that it's preferred to interact with dependent resources through their associations. So adding the user_id manually seems a bit clunky to me. But I'm not    Do

book.user = @user

instead then (ultimately it's the same thing obviously).

3

Oooh, that clarified a few things. Thanks Andrew!