Ruby Regex用于以逗号分隔的特定格式字母数字

Question

I need to validate that the text input in my rails form has contains one or more alphanumerics with specific format separated by comma.

For example the alphanumeric should be either two letters + seven numbers + one letter + one number or two letters + 11 numbers + one letter + one number . And these alphanumerics must be separated by comma (,)

US6174724B1 , US20010002490A1 (This is a valid one)

ruby , rails (This is an invalid one)

How can I build a ruby regular expression that checks if (these alphanumerics have specific format) AND if (they are separated by comma)

Answer 1

You could use this:

PATTERN

/^(?:(?:^| , )([A-Z]{2}(?:\d{7}|\d{11})[A-Z]\d)\b)+?$/

And you will have your alphanumerics in specific format in capture group 1 .

INPUT

US6174724B1 , US20010002490A1 (This is a valid one)

ruby , rails (This is an invalid one)

OUTPUT

Match 1: US6174724B1 
Group 1: US6174724B1

Match 2:  , US20010002490A1 
Group 1: US20010002490A1