Particular field should not only contains numeric value

Question

我想写一个正则表达式与Rails中的Validator一起使用，条件是“特殊字段（xyz）不应该只包含数字值”。

Answer 1

> 'Your String'.match(/^[^\d]+$/).to_a ###["Your String"]
> 'Your 123 String'.match(/^[^\d]+$/).to_a  ### []

Answer 2

You could match the field value against /\\D+/ - that will match one or more non-digit characters. Be aware, though that spaces, periods, and other special characters are considered non-digit, so you may have to add to that, depending on any other special cases that you may need to test for.