在相关模型更新销毁之前,错误不会传播

Question

我有一个父模型,正在通过诸如'@ client.update_attributes(params [:client]'之类的参数进行更新.在我的参数中是一个销毁'client_card'的调用.我在client_card上有一个before_destroy方法来阻止它我的before_destroy方法正在运行,但是,更新时,before_destroy上的错误不会传播到相关模型.有关如何在更新时将此模型错误传播到关联模型的任何建议吗？

class Client < ActiveRecord::Base
  has_many :client_cards, :dependent => :destroy
  validates_associated :client_cards

class ClientCard < ActiveRecord::Base
  belongs_to :client, :foreign_key => 'client_id'

  attr_accessible :id, :client_id, :card_hash, :last_four, :exp_date

  before_destroy :check_relationships

  def check_finished_appointments
    appointments = Appointment.select { |a| a.client_card == self && !a.has_started }
    if(appointments && appointments.length > 0 )
      errors.add(:base, "This card is tied to an appointment that hasn't occurred yet.")
      return false
    else
      return true
    end
  end

end

Answer 1

它有可能有效吗？如果控制器的删除操作像通常那样重定向到索引，则您将永远不会看到该错误，因为模型是通过重定向重新加载的。