假设我有两个模型
class User
embeds_many :notifications
field :age, type :Integer
class Notification
embedded_in :user
field :message, type: String
我想创建通知并将其添加到符合特定条件的所有用户。我想到的就是:
notification = Notification.new
notification.message = "Hello"
User.where(:age.ge => 18).push(:notifications,