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<?php
namespace Drupal\user\Plugin\Search;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Database\Connection;
use Drupal\Core\Entity\EntityManagerInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Access\AccessibleInterface;
use Drupal\search\Plugin\SearchPluginBase;
use Symfony\Component\DependencyInjection\ContainerInterface;
/**
* Executes a keyword search for users against the {users} database table.
*
* @SearchPlugin(
* id = "user_search",
* title = @Translation("Users")
* )
*/
class UserSearch extends SearchPluginBase implements AccessibleInterface {
/**
* The database connection.
*
* @var \Drupal\Core\Database\Connection
*/
protected $database;
/**
* The entity manager.
*
* @var \Drupal\Core\Entity\EntityManagerInterface
*/
protected $entityManager;
/**
* The module handler.
*
* @var \Drupal\Core\Extension\ModuleHandlerInterface
*/
protected $moduleHandler;
/**
* The current user.
*
* @var \Drupal\Core\Session\AccountInterface
*/
protected $currentUser;
/**
* {@inheritdoc}
*/
static public function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
return new static(
$container->get('database'),
$container->get('entity.manager'),
$container->get('module_handler'),
$container->get('current_user'),
$configuration,
$plugin_id,
$plugin_definition
);
}
/**
* Creates a UserSearch object.
*
* @param Connection $database
* The database connection.
* @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
* The entity manager.
* @param ModuleHandlerInterface $module_handler
* The module handler.
* @param \Drupal\Core\Session\AccountInterface $current_user
* The current user.
* @param array $configuration
* A configuration array containing information about the plugin instance.
* @param string $plugin_id
* The plugin_id for the plugin instance.
* @param mixed $plugin_definition
* The plugin implementation definition.
*/
public function __construct(Connection $database, EntityManagerInterface $entity_manager, ModuleHandlerInterface $module_handler, AccountInterface $current_user, array $configuration, $plugin_id, $plugin_definition) {
$this->database = $database;
$this->entityManager = $entity_manager;
$this->moduleHandler = $module_handler;
$this->currentUser = $current_user;
parent::__construct($configuration, $plugin_id, $plugin_definition);
$this->addCacheTags(['user_list']);
}
/**
* {@inheritdoc}
*/
public function access($operation = 'view', AccountInterface $account = NULL, $return_as_object = FALSE) {
$result = AccessResult::allowedIf(!empty($account) && $account->hasPermission('access user profiles'))->cachePerPermissions();
return $return_as_object ? $result : $result->isAllowed();
}
/**
* {@inheritdoc}
*/
public function execute() {
$results = [];
if (!$this->isSearchExecutable()) {
return $results;
}
// Process the keywords.
$keys = $this->keywords;
// Escape for LIKE matching.
$keys = $this->database->escapeLike($keys);
// Replace wildcards with MySQL/PostgreSQL wildcards.
$keys = preg_replace('!\*+!', '%', $keys);
// Run the query to find matching users.
$query = $this->database
->select('users_field_data', 'users')
->extend('Drupal\Core\Database\Query\PagerSelectExtender');
$query->fields('users', ['uid']);
$query->condition('default_langcode', 1);
if ($this->currentUser->hasPermission('administer users')) {
// Administrators can also search in the otherwise private email field,
// and they don't need to be restricted to only active users.
$query->fields('users', ['mail']);
$query->condition($query->orConditionGroup()
->condition('name', '%' . $keys . '%', 'LIKE')
->condition('mail', '%' . $keys . '%', 'LIKE')
);
}
else {
// Regular users can only search via usernames, and we do not show them
// blocked accounts.
$query->condition('name', '%' . $keys . '%', 'LIKE')
->condition('status', 1);
}
$uids = $query
->limit(15)
->execute()
->fetchCol();
$accounts = $this->entityManager->getStorage('user')->loadMultiple($uids);
foreach ($accounts as $account) {
$result = [
'title' => $account->getDisplayName(),
'link' => $account->url('canonical', ['absolute' => TRUE]),
];
if ($this->currentUser->hasPermission('administer users')) {
$result['title'] .= ' (' . $account->getEmail() . ')';
}
$this->addCacheableDependency($account);
$results[] = $result;
}
return $results;
}
/**
* {@inheritdoc}
*/
public function getHelp() {
$help = ['list' => [
'#theme' => 'item_list',
'#items' => [
$this->t('User search looks for user names and partial user names. Example: mar would match usernames mar, delmar, and maryjane.'),
$this->t('You can use * as a wildcard within your keyword. Example: m*r would match user names mar, delmar, and elementary.'),
],
]];
return $help;
}
}