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

问题描述

我想的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我

In ./script/console I do

p = Product.create
p

现场p.locale未设置。我做了什么错？

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

推荐答案

before_create 被称为之前 Base.save 的，因为你不保存它不获取调用。

before_create is called before Base.save, since your not saving its not getting called.

编辑：

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

通过这个在您的控制器将工作，你希望它。

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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