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class ConstraintManager in Zircon Profile 8

Same name and namespace in other branches
  1. 8.0 core/lib/Drupal/Core/Validation/ConstraintManager.php \Drupal\Core\Validation\ConstraintManager

Constraint plugin manager.

Manages validation constraints based upon \Symfony\Component\Validator\Constraint, whereas Symfony constraints are added in manually during construction. Constraint options are passed on as plugin configuration during plugin instantiation.

While core does not prefix constraint plugins, modules have to prefix them with the module name in order to avoid any naming conflicts. E.g. a "profile" module would have to prefix any constraints with "Profile".

Constraint plugins may specify data types to which support is limited via the 'type' key of plugin definitions. See \Drupal\Core\Validation\Annotation\Constraint for details.

Hierarchy

Expanded class hierarchy of ConstraintManager

See also

\Drupal\Core\Validation\Annotation\Constraint

3 files declare their use of ConstraintManager
RecursiveContextualValidatorTest.php in core/tests/Drupal/Tests/Core/TypedData/RecursiveContextualValidatorTest.php
Contains \Drupal\Tests\Core\TypedData\RecursiveContextualValidatorTest.
TypedDataManager.php in core/lib/Drupal/Core/TypedData/TypedDataManager.php
Contains \Drupal\Core\TypedData\TypedDataManager.
TypedDataManagerInterface.php in core/lib/Drupal/Core/TypedData/TypedDataManagerInterface.php
Contains \Drupal\Core\TypedData\TypedDataManagerInterface.
1 string reference to 'ConstraintManager'
core.services.yml in core/core.services.yml
core/core.services.yml
1 service uses ConstraintManager
validation.constraint in core/core.services.yml
Drupal\Core\Validation\ConstraintManager

File

core/lib/Drupal/Core/Validation/ConstraintManager.php, line 34
Contains \Drupal\Core\Validation\ConstraintManager.

Namespace

Drupal\Core\Validation
View source
class ConstraintManager extends DefaultPluginManager {

  /**
   * Overrides \Drupal\Component\Plugin\PluginManagerBase::__construct().
   *
   * @param \Traversable $namespaces
   *   An object that implements \Traversable which contains the root paths
   *   keyed by the corresponding namespace to look for plugin implementations.
   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
   *   Cache backend instance to use.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   The module handler to invoke the alter hook with.
   */
  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
    parent::__construct('Plugin/Validation/Constraint', $namespaces, $module_handler, NULL, 'Drupal\\Core\\Validation\\Annotation\\Constraint');
    $this
      ->alterInfo('validation_constraint');
    $this
      ->setCacheBackend($cache_backend, 'validation_constraint_plugins');
  }

  /**
   * {@inheritdoc}
   */
  protected function getDiscovery() {
    if (!isset($this->discovery)) {
      $this->discovery = parent::getDiscovery();
      $this->discovery = new StaticDiscoveryDecorator($this->discovery, [
        $this,
        'registerDefinitions',
      ]);
    }
    return $this->discovery;
  }

  /**
   * Creates a validation constraint.
   *
   * @param string $name
   *   The name or plugin id of the constraint.
   * @param mixed $options
   *   The options to pass to the constraint class. Required and supported
   *   options depend on the constraint class.
   *
   * @return \Symfony\Component\Validator\Constraint
   *   A validation constraint plugin.
   */
  public function create($name, $options) {
    if (!is_array($options)) {

      // Plugins need an array as configuration, so make sure we have one.
      // The constraint classes support passing the options as part of the
      // 'value' key also.
      $options = isset($options) ? array(
        'value' => $options,
      ) : array();
    }
    return $this
      ->createInstance($name, $options);
  }

  /**
   * Callback for registering definitions for constraints shipped with Symfony.
   *
   * @see ConstraintManager::__construct()
   */
  public function registerDefinitions() {
    $this
      ->getDiscovery()
      ->setDefinition('Callback', array(
      'label' => new TranslatableMarkup('Callback'),
      'class' => '\\Symfony\\Component\\Validator\\Constraints\\Callback',
      'type' => FALSE,
    ));
    $this
      ->getDiscovery()
      ->setDefinition('Blank', array(
      'label' => new TranslatableMarkup('Blank'),
      'class' => '\\Symfony\\Component\\Validator\\Constraints\\Blank',
      'type' => FALSE,
    ));
    $this
      ->getDiscovery()
      ->setDefinition('NotBlank', array(
      'label' => new TranslatableMarkup('Not blank'),
      'class' => '\\Symfony\\Component\\Validator\\Constraints\\NotBlank',
      'type' => FALSE,
    ));
    $this
      ->getDiscovery()
      ->setDefinition('Email', array(
      'label' => new TranslatableMarkup('Email'),
      'class' => '\\Drupal\\Core\\Validation\\Plugin\\Validation\\Constraint\\EmailConstraint',
      'type' => array(
        'string',
      ),
    ));
  }

  /**
   * {@inheritdoc}
   */
  public function processDefinition(&$definition, $plugin_id) {

    // Make sure 'type' is set and either an array or FALSE.
    if ($definition['type'] !== FALSE && !is_array($definition['type'])) {
      $definition['type'] = array(
        $definition['type'],
      );
    }
  }

  /**
   * Returns a list of constraints that support the given type.
   *
   * @param string $type
   *   The type to filter on.
   *
   * @return array
   *   An array of constraint plugin definitions supporting the given type,
   *   keyed by constraint name (plugin ID).
   */
  public function getDefinitionsByType($type) {
    $definitions = array();
    foreach ($this
      ->getDefinitions() as $plugin_id => $definition) {
      if ($definition['type'] === FALSE || in_array($type, $definition['type'])) {
        $definitions[$plugin_id] = $definition;
      }
    }
    return $definitions;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
ConstraintManager::create public function Creates a validation constraint.
ConstraintManager::getDefinitionsByType public function Returns a list of constraints that support the given type.
ConstraintManager::getDiscovery protected function Gets the plugin discovery. Overrides DefaultPluginManager::getDiscovery
ConstraintManager::processDefinition public function Performs extra processing on plugin definitions. Overrides DefaultPluginManager::processDefinition
ConstraintManager::registerDefinitions public function Callback for registering definitions for constraints shipped with Symfony.
ConstraintManager::__construct public function Overrides \Drupal\Component\Plugin\PluginManagerBase::__construct(). Overrides DefaultPluginManager::__construct
DefaultPluginManager::$alterHook protected property Name of the alter hook if one should be invoked.
DefaultPluginManager::$cacheKey protected property The cache key.
DefaultPluginManager::$cacheTags protected property An array of cache tags to use for the cached definitions.
DefaultPluginManager::$defaults protected property A set of defaults to be referenced by $this->processDefinition() if additional processing of plugins is necessary or helpful for development purposes. 5
DefaultPluginManager::$moduleHandler protected property The module handler to invoke the alter hook.
DefaultPluginManager::$namespaces protected property An object that implements \Traversable which contains the root paths keyed by the corresponding namespace to look for plugin implementations.
DefaultPluginManager::$pluginDefinitionAnnotationName protected property The name of the annotation that contains the plugin definition.
DefaultPluginManager::$pluginInterface protected property The interface each plugin should implement.
DefaultPluginManager::$subdir protected property The subdirectory within a namespace to look for plugins, or FALSE if the plugins are in the top level of the namespace.
DefaultPluginManager::alterDefinitions protected function Invokes the hook to alter the definitions if the alter hook is set. 1
DefaultPluginManager::alterInfo protected function Initializes the alter hook.
DefaultPluginManager::clearCachedDefinitions public function Clears static and persistent plugin definition caches. Overrides CachedDiscoveryInterface::clearCachedDefinitions 4
DefaultPluginManager::findDefinitions protected function Finds plugin definitions. 2
DefaultPluginManager::getCachedDefinitions protected function Returns the cached plugin definitions of the decorated discovery class.
DefaultPluginManager::getDefinitions public function Gets the definition of all plugins for this type. Overrides DiscoveryTrait::getDefinitions 2
DefaultPluginManager::getFactory protected function Gets the plugin factory. Overrides PluginManagerBase::getFactory
DefaultPluginManager::providerExists protected function Determines if the provider of a definition exists. 1
DefaultPluginManager::setCacheBackend public function Initialize the cache backend.
DefaultPluginManager::setCachedDefinitions protected function Sets a cache of plugin definitions for the decorated discovery class.
DefaultPluginManager::useCaches public function Disable the use of caches. Overrides CachedDiscoveryInterface::useCaches 1
DiscoveryCachedTrait::$definitions protected property Cached definitions array. 1
DiscoveryCachedTrait::getDefinition public function Overrides DiscoveryTrait::getDefinition 3
DiscoveryTrait::doGetDefinition protected function Gets a specific plugin definition.
DiscoveryTrait::hasDefinition public function
PluginManagerBase::$discovery protected property The object that discovers plugins managed by this manager.
PluginManagerBase::$factory protected property The object that instantiates plugins managed by this manager.
PluginManagerBase::$mapper protected property The object that returns the preconfigured plugin instance appropriate for a particular runtime condition.
PluginManagerBase::createInstance public function Creates a pre-configured instance of a plugin. Overrides FactoryInterface::createInstance 11
PluginManagerBase::getInstance public function Gets a preconfigured instance of a plugin. Overrides MapperInterface::getInstance 7
UseCacheBackendTrait::$cacheBackend protected property Cache backend instance.
UseCacheBackendTrait::$useCaches protected property Flag whether caches should be used or skipped.
UseCacheBackendTrait::cacheGet protected function Fetches from the cache backend, respecting the use caches flag.
UseCacheBackendTrait::cacheSet protected function Stores data in the persistent cache, respecting the use caches flag.