LogintobogganMailNameValidator.php in LoginToboggan 8

Namespace

Drupal\logintoboggan\Plugin\Validation\Constraint

File

src/Plugin/Validation/Constraint/LogintobogganMailNameValidator.php

<?php

namespace Drupal\logintoboggan\Plugin\Validation\Constraint;

use Drupal\Core\Database\Database;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;

/**
 * Validates that user name that uses email is not using a pre-existing email.
 */
class LogintobogganMailNameValidator extends ConstraintValidator {

  /**
   * Check that user name is not an email used for another account.
   *
   * {@inheritdoc}
   */
  public function validate($items, Constraint $constraint) {
    $parent = $items
      ->getEntity();
    $uid = $parent
      ->get('uid')->value;
    $name = $items
      ->get(0)->value;
    $connection = Database::getConnection();
    if (is_null($uid)) {
      $result = $connection
        ->select('users_field_data', 'ufd')
        ->fields('ufd', [
        'mail',
      ])
        ->condition('mail', $name, 'LIKE')
        ->countQuery()
        ->execute()
        ->fetchField();
    }
    else {
      $result = $connection
        ->select('users_field_data', 'ufd')
        ->fields('ufd', [
        'mail',
      ])
        ->condition('mail', $name, 'LIKE')
        ->condition('uid', $uid, '<>')
        ->countQuery()
        ->execute()
        ->fetchField();
    }
    if ($result > 0) {
      $this->context
        ->addViolation($constraint->message, []);
    }
  }

}

Classes

Name	Description
LogintobogganMailNameValidator	Validates that user name that uses email is not using a pre-existing email.