如何验证包含两个单词的列表的包含

Question

所以我只是弄清楚如何验证我的选择的包含。但是我有一个问题已经上升。如果其中一个值包含两个或更多单词，我无法弄清楚如何验证它。

以例如：

validates_inclusion_of :possibility, :in => %w(yes maybe no)

它会完美运作。然而，如果我有两个，三个字说：

validates_inclusion_of :job_possibility, :in => %w(yes please maybe not no thank you)

它不会起作用。我已经尝试将它们添加到括号等中。但是能够弄明白。有谁知道如何使这项工作？

Answer 1

您可以使用%W代替%w来实现所需的结果。由于%W支持字符串插值，因此您可以轻松实现两个单词，三个单词等。

使用%W：

validates_inclusion_of :job_possibility, :in => %W(yes please #{"maybe not"} no #{"thank you"})

-Or -

你可以直接指定数组：

validates_inclusion_of :job_possibility, :in => ["yes", "please", "maybe not", "no", "thank you"]

例如：

在IRB，

 > job_possibility = %W(yes please #{"maybe not"} no #{"thank you"})
 ## => ["yes", "please", "maybe not", "no", "thank you"] 
 > job_possibility = ["yes", "please", "maybe not", "no", "thank you"]
 ## => ["yes", "please", "maybe not", "no", "thank you"]