如果条件在 rails 3.2 和 mongoid + simple_form 上，则validates_presence_of

问题描述

如果属性 :shipping 等于 true:shipping_cost 和 :shipping_cost_anywhere 是否存在/代码>.如果

I want validate presence of these 2 attributes :shipping_cost and :shipping_cost_anywhere if the attribute :shipping is equal to true. and If

我的模型中有这个，但对我来说效果不佳:

I have this in my model but not working fine for me:

validates_presence_of :shipping_cost, :shipping_cost_anywhere, :allow_blank => "true" if :shipping == "true"

这是我的 :shipping 属性:

this is my :shipping attribute:

field :shipping, :type => Boolean, :default => "false"

我该怎么做?

谢谢！

已编辑.

我正在使用 mongoid 和 simple_form gems

推荐答案

我对这个问题的修复是下一个代码:

The fix for me to this question is the next code:

validates :shipping_cost, :shipping_cost_anywhere, :presence => true, :if => :shipping?

感谢大家的帮助，但任何答案都对我有用.谢谢！

Thank you to all for your help but any answer has worked for me. thanks!

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