Rails(或 Ruby):Yes/No 而不是 True/False [英] Rails (or Ruby): Yes/No instead of True/False

问题描述

我知道我可以轻松地编写一个函数并将其放入应用程序控制器中，但如果已经有其他东西可以做到这一点，我宁愿不这样做.基本上我想要类似的东西:

I know I could easily write a function and put it in the application controller, but I'd rather not if there is something else that does this already. Basically I want to have something like:

>> boolean_variable?
=> true
>> boolean_variable?.yesno
=> yes
>> boolean_variable?.yesno.capitalize
=> Yes

Rails 框架中是否已经存在类似的东西?

is there something like this already in the Rails framework?

推荐答案

不存在这样的内置助手，但实现起来非常简单:

No such built-in helper exists, but it's trivially easy to implement:

class TrueClass
  def yesno
    "Yes"
  end
end

class FalseClass
  def yesno
    "No"
  end
end

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