function PluginExistsConstraintValidator::validate

File

core/lib/Drupal/Core/Plugin/Plugin/Validation/Constraint/PluginExistsConstraintValidator.php, line 20

Class

PluginExistsConstraintValidator

Validates the PluginExists constraint.

Namespace

Code

public function validate(mixed $plugin_id, Constraint $constraint) {
  assert($constraint instanceof PluginExistsConstraint);
  if ($plugin_id === NULL) {
    return;
  }
  $definition = $constraint->pluginManager
    ->getDefinition($plugin_id, FALSE);
  // Some plugin managers provide fallbacks. In most cases, the use of a
  // fallback plugin ID suggests that the given plugin ID is invalid in some
  // way, so by default, we don't consider fallback plugin IDs as valid,
  // although that can be overridden by the `allowFallback` option if needed.
  if ($constraint->pluginManager instanceof FallbackPluginManagerInterface && $constraint->allowFallback) {
    $fallback_plugin_id = $constraint->pluginManager
      ->getFallbackPluginId($plugin_id);
    $definition = $constraint->pluginManager
      ->getDefinition($fallback_plugin_id, FALSE);
  }
  if (empty($definition)) {
    $this->context
      ->addViolation($constraint->unknownPluginMessage, [
      '@plugin_id' => $plugin_id,
    ]);
    return;
  }
  // If we don't need to validate the plugin class's interface, we're done.
  if (empty($constraint->interface)) {
    return;
  }
  if (!is_a(DefaultFactory::getPluginClass($plugin_id, $definition), $constraint->interface, TRUE)) {
    $this->context
      ->addViolation($constraint->invalidInterfaceMessage, [
      '@plugin_id' => $plugin_id,
      '@interface' => $constraint->interface,
    ]);
  }
}