class ApplyAddDepartment < ApplicationRecord belongs_to :user belongs_to :school belongs_to :department has_many :applied_messages, as: :applied has_many :tidings, as: :container, dependent: :destroy after_create :send_notify private def send_notify tidings.create!(user_id: 1, trigger_user_id: user_id, belong_container: school, tiding_type: 'Apply', status: 0) end end