pertence à opção: class_name falha
Eu não tenho idéia do que deu errado, mas não consigo obter os pertences_para trabalhar com a opção: class_name. Alguém poderia me esclarecer. Muito obrigado!
Aqui está um trecho do meu código.
class CreateUsers < ActiveRecord::Migration
def self.up
create_table :users do |t|
t.text :name
end
end
def self.down
drop_table :users
end
end
#####################################################
class CreateBooks < ActiveRecord::Migration
def self.up
create_table :books do |t|
t.text :title
t.integer :author_id, :null => false
end
end
def self.down
drop_table :books
end
end
#####################################################
class User < ActiveRecord::Base
has_many: books
end
#####################################################
class Book < ActiveRecord::Base
belongs_to :author, :class_name => 'User', :validate => true
end
#####################################################
class BooksController < ApplicationController
def create
user = User.new({:name => 'John Woo'})
user.save
@failed_book = Book.new({:title => 'Failed!', :author => @user})
@failed_book.save # missing author_id
@success_book = Book.new({:title => 'Nice day', :author_id => @user.id})
@success_book.save # no error!
end
end
meio Ambiente:
Ruby 1.9.1-p387 Rails 2.3.5