laravel/laravel — Issue #394: "in" and "not_in" values can't have commas
Author: cviebrock
Created: 2012-03-07 23:07:01+00:00
State: open

Because you explode on a comma here: https://github.com/laravel/laravel/blob/master/laravel/validator.php#L930 you can't have values that might have commas in them.

What about changing it to use str_getcsv() instead of explode()? Then you could have validation rules like:

in:something,"this, and that","something else"