Rails保存嵌套属性

Question

我有三个名为User，Account和AccountPermission的模型。

我在User和Account到AccountPermission之间建立了关联，所以，has_many :through

我还通过 creator_id 与User建立了Account和has_many。因为，我需要知道帐户的创建者。

这是我的协会，

user.rb

class User < ActiveRecord::Base

     has_many :created, class_name: 'Account', :foreign_key => 'creator_id'

     has_many :account_permissions, :class_name => 'AccountPermission'
     has_many :accounts, through: :account_permissions

     accepts_nested_attributes_for :account_permissions

account.rb

class Account < ActiveRecord::Base

    belongs_to :creator, class_name: 'User'

    has_many :accounts_permissions, :class_name => 'AccountPermission'
    has_many :users, through: :accounts_permissions

account_permission.rb

class AccountPermission < ApplicationRecord
    belongs_to :user
    belongs_to :account

    accepts_nested_attributes_for :account

控制器＃新

 def new
    @user = User.new
    @user.account_permissions.build.build_account
    respond_with(@user)
 end

我正在使用嵌套属性创建Account和User。不过，我还想在同一笔交易中向我的User添加 creator_id 。

我目前正在向我的用户添加creator_id;

resource.accounts.last.update(creator_id: resource.id)

这是一个非常低级别的解决方案，我感觉不舒服。因为，我每次都会发送一个额外的更新查询。

问题是，有没有办法在帐户创建中处理这个问题？

已更新

def create
    build_resource(sign_up_params)
    resource.save
    yield resource if block_given?
    if resource.persisted?

      # TODO: 
      resource.accounts.last.update(creator_id: resource.id)

      if resource.active_for_authentication?
        set_flash_message! :notice, :signed_up
        sign_up(resource_name, resource)
        respond_with resource, location: after_sign_up_path_for(resource)
      else
        set_flash_message! :notice, :"signed_up_but_#{resource.inactive_message}"
        expire_data_after_sign_in!
        respond_with resource, location: after_inactive_sign_up_path_for(resource)
      end
    else
      clean_up_passwords resource
      set_minimum_password_length
      respond_with resource
    end
  end

Answer 1

也许在模型账户中使用回调after_create？

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