ruby-on-rails - rails : Dependent delete_all not working

Question

我有 5 个模型。 服务器，平台，游戏，RetentionReport，DataReport。我正在尝试使用 :dependent => :delete_all，但它不起作用。这是我的模型。

class Game < ActiveRecord::Base
  attr_accessible :name

  has_many :platforms, :dependent => :delete_all
end

class Platform < ActiveRecord::Base
  attr_accessible :name, :game_id, :company_id

  belongs_to :game
  has_many :servers, :dependent => :delete_all
end

class Server < ActiveRecord::Base
  attr_accessible :name, :region, :device_type, :platform_id, :platform_server_id

  belongs_to :platform
  has_many :gm_data_reports, :dependent => :delete_all
  has_many :gm_retention_reports, :dependent => :delete_all

  delegate :company_id, :to => :platform

  validates :platform_server_id, :uniqueness => {:scope => :platform_id}
end

class DataReport < ActiveRecord::Base

 belongs_to :server
end

class RetentionReport < ActiveRecord::Base

 belongs_to :server
end

每当我在终端中运行 Game.delete_all 时，没有任何内容被删除，即使是 Platforms

Answer 1

delete_all 不会触发 call_backs。

如果你有Game.destroy_all，它会做你想做的事。

您可以在关联声明中使用:dependent => :destroy 或:dependent => :delete_all。前者将在关联中运行回调，而后者则不会。