Question

请引导我使用正则表达式，该正则表达式接受包含+，-，(，)，空格和数字的任何字符串。例如，89+98+67-45+(56+90)+()是可以接受的。

我有以下正则表达式

validates :number, format: { with: /\A(?:[- +()0-9])\z/,
                              message: I18n.t('global.errors.phone_format')}

但它不起作用。

Answer 1

你刚忘记了一个转发器：

SELECT * FROM TRNS_RATE_DETAILS
  WHERE EFFECTIVEDATE >= @STARTDATEOFMONTH 
AND ENDDATE <=@LASTDATEOFMONTH

感谢@Stefan，这个小组是多余的：

{{1}}

Answer 2

\A(?:[- +()0-9])+\z

编辑：正如所指出的那样，你不需要逃离[...]

然而，仍然可以正确捕捉。

Answer 3

@sawa unfortunately deleted his answer, but it was perfectly fine:

re = /[^+() \d-]/
"398hjfj"                !~ re # => false
"89+98+67-45+(56+90)+()" !~ re # => true

Since this is a negative match, it has to be used with the format validator's :without option:

validates :number, format: { without: /[^+() \d-]/ }