嘿,你如何验证一个full_name字段(姓氏).
解决方法
考虑像：
> Jan Levinson-Gould女士
>马丁·路德·金博士
> Brett d’Arras-d’Haudracey
>布鲁诺
而不是验证那里的字符,您可能只想确保一些字符集不存在.
例如：
class User < ActiveRecord::Base validates_format_of :full_name,:with => /\A[^0-9`!@#\$%\^&*+_=]+\z/ # add any other characters you'd like to disallow inside the [ brackets ] # Metacharacters [,\,^,$,.,|,?,*,+,(,and ) need to be escaped with a \ end
测试
Ms. Jan Levinson-Gould # pass Dr. Martin Luther King,Jr. # pass Brett d'Arras-d'Haudracey # pass Brüno # pass John Doe # pass Mary-Jo Jane Sally Smith # pass Fatty Mc.Error$ # fail FA!L # fail #arold Newm@n # fail N4m3 w1th Numb3r5 # fail
正则表达式解释
NODE EXPLANATION
--------------------------------------------------------------------------------
\A the beginning of the string
--------------------------------------------------------------------------------
[^`!@#\$%\^&*+_=\d]+ any character except: '`','!','@','#','\$','%','\^','&','*','+','_','=',digits (0-9) (1 or more times (matching
the most amount possible))
--------------------------------------------------------------------------------
\z the end of the string