Rails：依赖delete_all不工作

Question

我有5个模型。 Server，Platform,Game, RetentionReport,​​。我试图使用:dependent => :delete_all，但它不会工作。这是我的模特。

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 

每当我在终端运行Game.delete_all，没有被删除甚至没有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。

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