Rails:如何验证某个东西是布尔值?
问题描述：
rails 是否有像 validates_numericality_of 这样的用于布尔值的验证器，还是我需要自己推出?
Does rails have a validator like validates_numericality_of for boolean or do I need to roll my own?
答
从 Rails 3 开始，你可以:
Since Rails 3, you can do:
validates :field, inclusion: { in: [ true, false ] }