/**
* Validate username field.
*
* @access public
* @since 1.0.0
* @return void
*/
public static function validate_username($passed, $fields, $values)
{
$nickname = $values['register']['username'];
if (wpum_get_option('exclude_usernames') && array_key_exists($nickname, wpum_get_disabled_usernames())) {
return new WP_Error('nickname-validation-error', __('This nickname cannot be used.', 'wpum'));
}
// Check for nicknames if permalink structure requires unique nicknames.
if (get_option('wpum_permalink') == 'nickname') {
$current_user = wp_get_current_user();
if ($username !== $current_user->user_nicename && wpum_nickname_exists($username)) {
return new WP_Error('username-validation-error', __('This nickname cannot be used.', 'wpum'));
}
}
return $passed;
}
/**
* Given $user_data checks against $method_type if the user exists.
*
* @since 1.0.0
* @param string $user_data Either ID/Username/Nickname
* @param string $method_type Either user_id/username/nickname - usually retrieve thorugh get_option('wpum_permalink')
* @return bool
*/
function wpum_user_exists($user_data, $method_type)
{
$exists = false;
// Check if user exists by ID
if (!empty($user_data) && $method_type == 'user_id' && get_user_by('id', intval($user_data))) {
$exists = true;
}
// Check if user exists by username
if (!empty($user_data) && $method_type == 'username' && get_user_by('login', esc_attr($user_data))) {
$exists = true;
}
// Check if user exists by nickname
if (!empty($user_data) && $method_type == 'nickname' && wpum_nickname_exists($user_data)) {
$exists = true;
}
return $exists;
}