创建用户时在其他表格中创建数据

Question

美好的一天。

我在我的数据库（PostgeSQL）中有两个表：“用户”和“文件夹”。文件夹是belongs_to :user和用户has_many :folders。我需要用户，在创建帐户时自动在name: "Default", id: 1, user_id: current_user.id的文件夹表中创建一个文件夹。按我的理解正确的话，我需要编辑在users_controller

create方法这是我user.rb

# == Schema Information 
# 
# Table name: users 
# 
# id    :integer   not null, primary key 
# name   :string(255) 
# email   :string(255) 
# created_at  :datetime   not null 
# updated_at  :datetime   not null 
# password_digest :string(255) 
# remember_token :string(255) 
# admin   :boolean   default(FALSE) 
# 

class User < ActiveRecord::Base 
    attr_accessible :name, :email, :password, :password_confirmation 
    has_secure_password 
    has_many :folders, dependent: :destroy 

    before_save { email.downcase! } 
    before_save :create_remember_token 

    validates :name, presence: true, length: { maximum: 50 } 
    VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i 
    validates :email, presence: true, format: { with: VALID_EMAIL_REGEX }, uniqueness: { case_sensitive: false } 
    validates :password, length: { minimum: 6 } 
    validates :password_confirmation, presence: true 

    private 

    def create_remember_token 
    self.remember_token = SecureRandom.urlsafe_base64 
    end 
end 

这是folder.rb

# == Schema Information 
# 
# Table name: folders 
# 
# id   :integer   not null, primary key 
# name  :string(255) 
# user_id :integer 
# created_at :datetime   not null 
# updated_at :datetime   not null 
# 

class Folder < ActiveRecord::Base 
    attr_accessible :name 
    belongs_to :user 
    has_many :bookmarks, dependent: :destroy 

    validates :user_id, presence: true 
    validates :name, presence: true 
end 

这是从users_controller.rb

def create 
    @user = User.new(params[:user]) 
    if @user.save 
     sign_in @user 
     redirect_to @user 
     flash[:success] = "Welcome to Timio Bookmarks!" 
    else 
     if signed_in? 
     redirect_to root_path 
     else 
     render 'new' 
     end 
    end 
    end 

的 create方法

感谢您的帮助！

Answer 1

尝试类似：

@user.folders << Folder.new 

之前，你保存在@ user.save