// Some validation
if (!Validate::string($nickname, array('min_length' => 1,
'max_length' => 64,
- 'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
+ 'format' => NICKNAME_FMT))) {
$this->showForm(_('Nickname must have only lowercase letters and numbers and no spaces.'));
return;
} else if (!User::allowed_nickname($nickname)) {