1

我是 mongoid 的新手,我在查询数据库的内部关系时遇到问题:

这是我希望为其创建查询的第一个模型

class User
  include Mongoid::Document
  include Mongoid::MultiParameterAttributes
  include Geocoder::Model::Mongoid

  has_many :hosted_meals, class_name:'Meal', inverse_of: :host
  has_and_belongs_to_many :followers, class_name: 'User', inverse_of: :following
 .
 .
 .
end

第二个模型

  class Meal
    include Mongoid::Document
    include Mongoid::Timestamps
    include Geocoder::Model::Mongoid

    field :privacy, type: String, default: 'p'
    belongs_to :host, class_name: 'User', inverse_of: :hosted_meals

我试图创建一个执行以下操作的 mongo 查询:

  1. 返回所有类型为“p”的餐点

  2. 返回所有餐点的类型为“f”,并且它们的主人在当前用户的关注者中,如下所示:

Meal.where(:privacy => 'f', :host_id.in => )

4

0 回答 0