Rails：依賴delete_all不工作

Question

我有5個模型。 Server，Platform,Game, RetentionReport,​​。我試圖使用:dependent => :delete_all，但它不會工作。這是我的模特。

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 

每當我在終端運行Game.delete_all，沒有被刪除甚至沒有Platforms

Answer 1

delete_all不會觸發call_backs。

如果你有Game.destroy_all它會做你想做的。

您可以在關聯聲明中使用:dependent => :destroy或:dependent => :delete_all。前者將在聯盟中運行回調，而後者則不會。