Question

我使用Rails进行Mongoid / MongoDB的新功能。我想在User和Project之间创建has_and_belongs_to_many asscoiation。

class Project
  include Mongoid::Document
  field :title, type: String
  field :description, type: String

  validates_presence_of :title, :description

  has_and_belongs_to_many :users
end

class User
  include Mongoid::Document
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  ## Database authenticatable
  field :email,              type: String, default: ""
  field :encrypted_password, type: String, default: ""

  ## Recoverable
  field :reset_password_token,   type: String
  field :reset_password_sent_at, type: Time

  ## Rememberable
  field :remember_created_at, type: Time

  ## Trackable
  field :sign_in_count,      type: Integer, default: 0
  field :current_sign_in_at, type: Time
  field :last_sign_in_at,    type: Time
  field :current_sign_in_ip, type: String
  field :last_sign_in_ip,    type: String

  ## Confirmable
  # field :confirmation_token,   type: String
  # field :confirmed_at,         type: Time
  # field :confirmation_sent_at, type: Time
  # field :unconfirmed_email,    type: String # Only if using reconfirmable

  ## Lockable
  # field :failed_attempts, type: Integer, default: 0 # Only if lock strategy is :failed_attempts
  # field :unlock_token,    type: String # Only if unlock strategy is :email or :both
  # field :locked_at,       type: Time


  has_and_belongs_to_many :projects
end

但是当我进入控制台时，看起来它们没有连接。

{＆＃34; _id＆＃34; ：ObjectId（＆＃34; 564ddf63c705146553000001＆＃34;），＆＃34; title＆＃34; ：＆＃34;项目1   ＆＃34;，＆＃34;描述＆＃34; ：＆＃34; .....＆＃34; }

{＆＃34; _id＆＃34; ：ObjectId（＆＃34; 564dddc6c70514618c00000b＆＃34;），＆＃34; email＆＃34; ：   ＆＃34; user1@mail.com"，＆＃34; encrypted_password＆＃34; ：   ＆＃34; $ 2A $ 10 $ xUAdz9V64IEH9oufE3kYauzZ / .xa5GBr / 0lapZDnSkwca40jH8 / I6＆＃34 ;,   ＆＃34; sign_in_count＆＃34; ：1，＆＃34; reset_password_token＆＃34; ：空值，   ＆＃34; reset_password_sent_at＆＃34; ：null，＆＃34; last_sign_in_at＆＃34; ：   ISODate（＆＃34; 2015-11-19T14：33：43.293Z＆＃34;），＆＃34; current_sign_in_at＆＃34; ：   ISODate（＆＃34; 2015-11-19T14：33：43.293Z＆＃34;），＆＃34; last_sign_in_ip＆＃34; ：＆＃34; :: 1＆＃34;，   ＆＃34; current_sign_in_ip＆＃34; ：＆＃34; :: 1＆＃34; }

我希望Project的用户和user_ids都有project_ids。我做错了什么？

Answer 1

我明白了！我应该在rails控制台中观看，而不是mongodb控制台。我仍然不明白，为什么这些游戏机会显示不同的结果。但是在rails控制台中，我有用于Project的project_ids和用于Project的user_ids。所以HABTM有效！

Rails Mongoid HABTM协会无法正常工作

1 个答案: