我正在尝试使用 Ruby on Rails、Mongo 创建一个小型游戏服务器，使用 Mongoid 作为 ORM，并使用 Devise 进行身份验证。我正在尝试修改 db/seeds.rb 以播种多个用户和游戏文档。
您如何在两个 Mongo/Mongoid 关系之间创建种子？
我有用户和游戏。用户有_many Games。我找到了为“embeds_many”和“embedded_in”创建种子数据库的示例，但没有为 has/belongs 创建种子数据库的示例。如果这是正确的架构，后续将是（有第三种模型“Turns”将嵌入“游戏”中。
class Game
include Mongoid::Document
belongs_to :user
embeds_many :turns
field :title, type: String
field :user_id, type: Integer
field :current_player, type: Integer
end
class User
include Mongoid::Document
has_many :games
# Include default devise modules. Others available are:
# :token_authenticatable, :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 => ""
validates_presence_of :email
validates_presence_of :encrypted_password
field :name
validates_presence_of :name
validates_uniqueness_of :name, :email, :case_sensitive => false
attr_accessible :name, :email, :password, :password_confirmation, :remember_me
...
... bunch of fields to support devise gem
结尾
我尝试了两种方法来完成这项工作，但都没有在数据库中创建关系：
puts 'EMPTY THE MONGODB DATABASE'
::Mongoid::Sessions.default.drop
puts 'SETTING UP DEFAULT USER LOGIN'
user = User.create! :name => 'First User', :email => 'user@example.com', :password => 'please', :password_confirmation => 'please'
puts 'New user created: ' << user.name
game = Game.create! :title => 'First Game', :user_id => user._id, :current_player => user._id
puts 'New game created: ' << game.title
user.games.push(game)
user.save
game2 = Game.create(:title => 'Foo Game', users: [
User.create(:name => 'd1', :email => 'd1@example.com', :password => 'd', :password_confirmation => 'd'),
User.create(:name => 'd2', :email => 'd2@example.com', :password => 'd', :password_confirmation => 'd'),
User.create(:name => 'd3', :email => 'd3@example.com', :password => 'd', :password_confirmation => 'd')
])
puts 'Second game created: ' << game2.title