Rails：在after_create中设置属性 [英] Rails: Setting attribute in after_create

问题描述

我希望ActiveRecord使用回调自动设置一些数据库字段。

I would like ActiveRecord to set some DB field automatically using callbacks.

class Product < ActiveRecord::Base
   after_create :set_locale
   def set_locale
      self.locale = I18n.locale
   end
end

在./script/console中我

In ./script/console I do

p = Product.create
p

未设置字段p.locale。我做错了什么？

Field p.locale is not set. What did I do wrong?

推荐答案

before_create

编辑：

class Product < ActiveRecord::Base
   before_create :set_locale
   def set_locale
      self.locale = I18n.locale
   end
end

在你的控制器中，你将如何使用它。

With this in your controller will work how you want it to.

@product = Product.create # before_create will be called and locale will be set for the new product

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