Question

我有一个UnreadEntry模型并使用after_commit回调来向推送服务发送通知。问题是在添加记录时事件触发正常，但在模型上发送delete_all时，after_commit，after_destroy都不会被触发。

如何添加catch delete_all并为其添加回调？

class UnreadEntry < ActiveRecord::Base
  belongs_to :user
  belongs_to :feed
  belongs_to :entry

  after_commit :send_pusher_notification, if: PUSHER_ENABLED

  validates_uniqueness_of :user_id, scope: :entry_id

  def self.create_from_owners(user, entry)
    create(user_id: user.id, feed_id: entry.feed_id, entry_id: entry.id, published: entry.published, entry_created_at: entry.created_at)
  end

  def self.sort_preference(sort)
    if sort == 'ASC'
      order("published ASC")
    else
      order("published DESC")
    end
  end

  def send_pusher_notification(user = nil, from = 'UnreadEntry#callback')
    if user.nil?
      unread_count = UnreadEntry.where(user_id: self.user_id).count
    else
      unread_count = UnreadEntry.where(user_id: user.id).count
    end
    Pusher['rssapp'].trigger('unread_count', {
      message: unread_count
    })  
  end

end

Answer 1

简单 - 不要使用delete_all。 delete_all和update_all专门用于直接查询数据库，绕过ActiveRecord模型逻辑 - 包括验证和回调。如果您想要回调，请分别在每个模型实例上调用destroy。

my_collection.each(&:destroy)

回调rails 4 delete_all

1 个答案: