How to limit usernames to just letters, numbers & underscores? (like Twitter)

byakko

Is there a way to set the username restrictions like Twitter's during registration?

I did some digging and I'm not sure how to edit this particular code so it's A-Z, a-z, 0-9, and _
$Configuration['Garden']['User']['ValidationRegex'] = '[a-z]';

And can I get feedback on these?

$Definition['UsernameError'] = "Username can only contain letters, numbers, and underscores, and must be between 3 and 15 characters long.";
(display rules)

$Configuration['Garden']['User']['ValidationLength'] = array(3,15)
(max username chararacters on twitter is 15)

Thanks!

hgtonight

The regex you are looking for is:

[A-z_]

The length restriction is:

{3,15}

So you put in your /conf/config.php file:

$Configuration['Garden']['User']['ValidationRegex'] = '[A-z_]';
$Configuration['Garden']['User']['ValidationLength'] = '{3,15}';

I validated these options via http://www.phpliveregex.com/

hgtonight

@byakko said:
Is there a way to set the username restrictions like Twitter's during registration?

I did some digging and I'm not sure how to edit this particular code so it's A-Z, a-z, 0-9, and _

I just realized I left out numbers in the regex. [A-z0-9_] will allow names to have numbers in them.

Sorry about that.