habtm关系不支持:dependent选项 [英] habtm relationship does not support :dependent option

问题描述

HABTM关系是否不支持:dependent选项吗?

Is it true that HABTM relationships do not support the :dependent option?

class Person < ActiveRecord::Base
  has_and_belongs_to_many :posts, :dependent => :destroy
end

我正在尝试Rails edge.

I am trying rails edge.

推荐答案

是的，它不支持. 请参阅文档.通常，habtm仅用于非常简单的情况，如果您开始需要更复杂的内容，则应切换到has_many :through.

Yep, It doesn't support it. See the docs. Generally habtm is meant only for very very simple cases and if you start needing more complex things you should switch to has_many :through.

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