class AccountProxy in Drupal 9

A proxied implementation of AccountInterface.

The reason why we need an account proxy is that we don't want to have global state directly stored in the container.

This proxy object avoids multiple invocations of the authentication manager which can happen if the current user is accessed in constructors. It also allows legacy code to change the current user where the user cannot be directly injected into dependent code.

Hierarchy

• class \Drupal\Core\Session\AccountProxy implements AccountProxyInterface uses DependencySerializationTrait

1 file declares its use of AccountProxy

AccountProxyTest.php in core/tests/Drupal/Tests/Core/Session/AccountProxyTest.php

1 string reference to 'AccountProxy'

core.services.yml in core/core.services.yml

core/core.services.yml

1 service uses AccountProxy

current_user in core/core.services.yml

Drupal\Core\Session\AccountProxy

File

core/lib/Drupal/Core/Session/AccountProxy.php, line 19

Namespace

Drupal\Core\Session

class AccountProxy implements AccountProxyInterface {
  use DependencySerializationTrait;

  /**
   * The instantiated account.
   *
   * @var \Drupal\Core\Session\AccountInterface
   */
  protected $account;

  /**
   * Account id.
   *
   * @var int
   */
  protected $id = 0;

  /**
   * Event dispatcher.
   *
   * @var \Symfony\Contracts\EventDispatcher\EventDispatcherInterface
   */
  protected $eventDispatcher;

  /**
   * AccountProxy constructor.
   *
   * @param \Symfony\Contracts\EventDispatcher\EventDispatcherInterface $eventDispatcher
   *   Event dispatcher.
   */
  public function __construct(EventDispatcherInterface $eventDispatcher) {
    $this->eventDispatcher = $eventDispatcher;
  }

  /**
   * {@inheritdoc}
   */
  public function setAccount(AccountInterface $account) {

    // If the passed account is already proxied, use the actual account instead
    // to prevent loops.
    if ($account instanceof static) {
      $account = $account
        ->getAccount();
    }
    $this->account = $account;
    $this->id = $account
      ->id();
    $this->eventDispatcher
      ->dispatch(new AccountSetEvent($account), AccountEvents::SET_USER);
  }

  /**
   * {@inheritdoc}
   */
  public function getAccount() {
    if (!isset($this->account)) {
      if ($this->id) {

        // After the container is rebuilt, DrupalKernel sets the initial
        // account to the id of the logged in user. This is necessary in order
        // to refresh the user account reference here.
        $this
          ->setAccount($this
          ->loadUserEntity($this->id));
      }
      else {
        $this->account = new AnonymousUserSession();
      }
    }
    return $this->account;
  }

  /**
   * {@inheritdoc}
   */
  public function id() {
    return $this->id;
  }

  /**
   * {@inheritdoc}
   */
  public function getRoles($exclude_locked_roles = FALSE) {
    return $this
      ->getAccount()
      ->getRoles($exclude_locked_roles);
  }

  /**
   * {@inheritdoc}
   */
  public function hasPermission($permission) {
    return $this
      ->getAccount()
      ->hasPermission($permission);
  }

  /**
   * {@inheritdoc}
   */
  public function isAuthenticated() {
    return $this
      ->getAccount()
      ->isAuthenticated();
  }

  /**
   * {@inheritdoc}
   */
  public function isAnonymous() {
    return $this
      ->getAccount()
      ->isAnonymous();
  }

  /**
   * {@inheritdoc}
   */
  public function getPreferredLangcode($fallback_to_default = TRUE) {
    return $this
      ->getAccount()
      ->getPreferredLangcode($fallback_to_default);
  }

  /**
   * {@inheritdoc}
   */
  public function getPreferredAdminLangcode($fallback_to_default = TRUE) {
    return $this
      ->getAccount()
      ->getPreferredAdminLangcode($fallback_to_default);
  }

  /**
   * {@inheritdoc}
   */
  public function getAccountName() {
    return $this
      ->getAccount()
      ->getAccountName();
  }

  /**
   * {@inheritdoc}
   */
  public function getDisplayName() {
    return $this
      ->getAccount()
      ->getDisplayName();
  }

  /**
   * {@inheritdoc}
   */
  public function getEmail() {
    return $this
      ->getAccount()
      ->getEmail();
  }

  /**
   * {@inheritdoc}
   */
  public function getTimeZone() {
    return $this
      ->getAccount()
      ->getTimeZone();
  }

  /**
   * {@inheritdoc}
   */
  public function getLastAccessedTime() {
    return $this
      ->getAccount()
      ->getLastAccessedTime();
  }

  /**
   * {@inheritdoc}
   */
  public function setInitialAccountId($account_id) {
    if (isset($this->account)) {
      throw new \LogicException('AccountProxyInterface::setInitialAccountId() cannot be called after an account was set on the AccountProxy');
    }
    $this->id = $account_id;
  }

  /**
   * Load a user entity.
   *
   * The entity type manager requires additional initialization code and cache
   * clearing after the list of modules is changed. Therefore it is necessary to
   * retrieve it as late as possible.
   *
   * Because of serialization issues it is currently not possible to inject the
   * container into the AccountProxy. Thus it is necessary to retrieve the
   * entity type manager statically.
   *
   * @see https://www.drupal.org/node/2430447
   *
   * @param int $account_id
   *   The id of an account to load.
   *
   * @return \Drupal\Core\Session\AccountInterface|null
   *   An account or NULL if none is found.
   */
  protected function loadUserEntity($account_id) {
    return \Drupal::entityTypeManager()
      ->getStorage('user')
      ->load($account_id);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AccountInterface::ANONYMOUS_ROLE		constant	Role ID for anonymous users.
AccountInterface::AUTHENTICATED_ROLE		constant	Role ID for authenticated users.
AccountProxy::$account	protected	property	The instantiated account.
AccountProxy::$eventDispatcher	protected	property	Event dispatcher.
AccountProxy::$id	protected	property	Account id.
AccountProxy::getAccount	public	function	Gets the currently wrapped account. Overrides AccountProxyInterface::getAccount
AccountProxy::getAccountName	public	function	Returns the unaltered login name of this account. Overrides AccountInterface::getAccountName
AccountProxy::getDisplayName	public	function	Returns the display name of this account. Overrides AccountInterface::getDisplayName
AccountProxy::getEmail	public	function	Returns the email address of this account. Overrides AccountInterface::getEmail
AccountProxy::getLastAccessedTime	public	function	The timestamp when the account last accessed the site. Overrides AccountInterface::getLastAccessedTime
AccountProxy::getPreferredAdminLangcode	public	function	Returns the preferred administrative language code of the account. Overrides AccountInterface::getPreferredAdminLangcode
AccountProxy::getPreferredLangcode	public	function	Returns the preferred language code of the account. Overrides AccountInterface::getPreferredLangcode
AccountProxy::getRoles	public	function	Returns a list of roles. Overrides AccountInterface::getRoles
AccountProxy::getTimeZone	public	function	Returns the timezone of this account. Overrides AccountInterface::getTimeZone
AccountProxy::hasPermission	public	function	Checks whether a user has a certain permission. Overrides AccountInterface::hasPermission
AccountProxy::id	public	function	Returns the user ID or 0 for anonymous. Overrides AccountInterface::id
AccountProxy::isAnonymous	public	function	Returns TRUE if the account is anonymous. Overrides AccountInterface::isAnonymous
AccountProxy::isAuthenticated	public	function	Returns TRUE if the account is authenticated. Overrides AccountInterface::isAuthenticated
AccountProxy::loadUserEntity	protected	function	Load a user entity.
AccountProxy::setAccount	public	function	Sets the currently wrapped account. Overrides AccountProxyInterface::setAccount
AccountProxy::setInitialAccountId	public	function	Sets the id of the initial account. Overrides AccountProxyInterface::setInitialAccountId
AccountProxy::__construct	public	function	AccountProxy constructor.
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2