username_check.unique.inc in Username originality AJAX check 8

AJAX callbacks for the username_check module.

File

username_check.unique.inc

<?php

/**
 * @file
 * AJAX callbacks for the username_check module.
 */

/**
 * Main AJAX function: originality check menu callback.
 */
function username_check_callback() {
  $output = array();
  $username = $_GET['username'];
  $ret = user_validate_name($username);
  if ($ret) {
    $output['allowed'] = FALSE;
    $output['msg'] = $ret;
  }
  else {
    $ret = user_is_blocked($username);
    if ($ret) {
      $output['allowed'] = FALSE;
      $output['msg'] = t('The username %username is not allowed.', array(
        '%username' => $username,
      ));
    }
    else {
      $username = check_plain($username);
      $ret = _username_check_is_user_exists($username);
      if ($ret) {
        $output['allowed'] = FALSE;
        $output['msg'] = t('The username %username is already taken. If this is you, please ' . \Drupal::l('login,', \Drupal\Core\Url::fromRoute('user.page')) . ' or if you\'ve forgotten your password, ' . \Drupal::l('request a new password', \Drupal\Core\Url::fromRoute('user.pass')) . '.', array(
          '%username' => $username,
        ));
      }
      else {
        $output['allowed'] = TRUE;
      }
    }
  }
  drupal_json_output($output);
}

/**
 * Query user table to check if such username is already exists.
 */
function _username_check_is_user_exists($username) {
  return db_query("SELECT COUNT(u.name) count FROM {users} u WHERE LOWER(u.name) = LOWER(:username)", array(
    ':username' => $username,
  ))
    ->fetchField();
}

/**
 * Main AJAX function: originality check menu callback for user profile 
 */
function username_check_profile_callback() {
  $output = array();
  $username = $_GET['profile'];
  $ret = user_validate_name($username);
  if ($ret) {
    $output['allowed'] = FALSE;
    $output['msg'] = $ret;
  }
  else {
    $ret = user_is_blocked($username);
    if ($ret) {
      $output['allowed'] = FALSE;
      $output['msg'] = t('The username %username is not allowed.', array(
        '%username' => $username,
      ));
    }
    else {
      $username = check_plain($username);

      // check to see if this username is the current users username
      $ret = _username_check_is_current_user($username);
      if ($ret) {
        $output['allowed'] = TRUE;
        $output['msg'] = t('The username %username is your username.', array(
          '%username' => $username,
        ));
      }
      else {
        $ret = _username_check_is_user_exists($username);
        if ($ret) {
          $output['allowed'] = FALSE;
          $output['msg'] = t('The username %username is already taken.', array(
            '%username' => $username,
          ));
        }
        else {
          $output['allowed'] = TRUE;
        }
      }
    }
  }
  drupal_json_output($output);
}

/**
 * Query user table to check if this is the current user.
 */
function _username_check_is_current_user($username) {
  $user = \Drupal::currentUser();
  return db_query("SELECT COUNT(u.name) count FROM {users} u WHERE LOWER(u.name) = LOWER(:username) AND u.uid =" . $user->uid, array(
    ':username' => $username,
  ))
    ->fetchField();
}

/**
 * Main AJAX function: originality check menu callback for email.
 */
function username_check_mail_callback() {
  $output = array();
  $mail = $_GET['mail'];
  $ret = user_validate_mail($mail);
  if ($ret) {
    $output['allowed'] = FALSE;
    $output['msg'] = $ret;
  }
  else {
    $ret = user_is_blocked($mail);
    if ($ret) {
      $output['allowed'] = FALSE;
      $output['msg'] = t('The e-mail address %mail is not allowed.', array(
        '%mail' => $mail,
      ));
    }
    else {
      $mail = check_plain($mail);
      $ret = _username_check_is_mail_exists($mail);
      if ($ret) {
        $output['allowed'] = FALSE;
        $output['msg'] = t('The e-mail address %mail is already in the system, you have an account here. Please ' . \Drupal::l('login,', \Drupal\Core\Url::fromRoute('user.page')) . ' or if you\'ve forgotten your password, ' . \Drupal::l('request a new password', \Drupal\Core\Url::fromRoute('user.pass')) . '.', array(
          '%mail' => $mail,
        ));
      }
      else {
        $output['allowed'] = TRUE;
      }
    }
  }
  drupal_json_output($output);
}

/**
 * Query user table to check if such mail is already exists.
 */
function _username_check_is_mail_exists($mail) {
  return db_query("SELECT COUNT(u.mail) count FROM {users} u WHERE LOWER(u.mail) = LOWER(:mail)", array(
    ':mail' => $mail,
  ))
    ->fetchField();
}

Functions

Name	Description
username_check_callback	Main AJAX function: originality check menu callback.
username_check_mail_callback	Main AJAX function: originality check menu callback for email.
username_check_profile_callback	Main AJAX function: originality check menu callback for user profile
_username_check_is_current_user	Query user table to check if this is the current user.
_username_check_is_mail_exists	Query user table to check if such mail is already exists.
_username_check_is_user_exists	Query user table to check if such username is already exists.