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我有三種模式:「用戶」,「出版物」和「線程」。用戶和線程是對象,而發佈是一個連接(使用has_many:through)。Rails:空user_id has_many:通過
當用戶創建一個新線程時,線程及其聯接(發佈)都成功創建 - 這很好。唯一的問題是,user_id在兩個都是空的。
僅供參考,我正在使用設計。
下面是我的用戶模型:
class User < ActiveRecord::Base
devise :database_authenticatable, :registerable, :confirmable,
:recoverable, :rememberable, :trackable, :validatable
attr_accessible :email, :password, :password_confirmation,
:remember_me, :username, :profile_image,
:first_name, :last_name
has_many :publications
has_many :threads, :through => :publications
end
下面是我的出版物型號:
class Publication < ActiveRecord::Base
attr_accessible :thread_id, :user_id
belongs_to :thread
belongs_to :user
end
下面是我的線程模型:
class Thread < ActiveRecord::Base
attr_accessible :description, :name, :tag_list, :thumbnail_image, :status, :thread_type, :subtitle, :summary
has_one :publication
has_one :user, :through => :publication
end
下面是我的形式用於創建新線程:
= form_for [@user, @thread] do |f|
- if @thread.errors.any?
#error_explanation
%h2= "#{pluralize(@thread.errors.count, "error")} prohibited this thread from being saved:"
%ul
- @thread.errors.full_messages.each do |msg|
%li= msg
.field
%span Title:
= f.text_field :name
.actions
= f.submit 'Submit'
下面是我在線程控制器創建行動:
def create
@user = User.find(params[:user_id])
@thread = @user.threads.new(params[:thread])
@thread.build_publication
end
下面是出版物表:
class CreatePublications < ActiveRecord::Migration
def change
create_table :publications do |t|
t.integer :user_id
t.integer :thread_id
t.timestamps
end
end
end
所有對象都成功創建,我似乎無法得到USER_ID經歷。