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<?php |
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namespace Drupal\paragraphs_editor\Access; |
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use Drupal\Core\Access\AccessResult; |
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use Drupal\Core\Entity\EntityTypeManagerInterface; |
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use Drupal\Core\Routing\Access\AccessInterface; |
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use Drupal\Core\Routing\RouteMatchInterface; |
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use Drupal\Core\Session\AccountInterface; |
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use Symfony\Component\Routing\Route; |
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/** |
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* An access check handler for checking user access to an editor context. |
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*/ |
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class ContextAccessCheck implements AccessInterface { |
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/** |
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* The Drupal entity type manager. |
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* |
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* @var \Drupal\Core\Entity\EntityTypeManagerInterface |
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*/ |
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protected $entityTypeManager; |
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/** |
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* The key used by the routing requirement. |
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* |
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* @var string |
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*/ |
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protected $requirementsKey = '_paragraphs_editor_access_context'; |
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/** |
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* Creates a context access check object. |
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* |
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* @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager |
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* The entity type manager service. |
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*/ |
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public function __construct(EntityTypeManagerInterface $entity_type_manager) { |
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$this->entityTypeManager = $entity_type_manager; |
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} |
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/** |
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* Determines if the user has access to manipulate the requested entity. |
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* |
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* In order to perform any command on an editor instance, the user must have |
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* access to edit the entity the instance is attached to, or for new entities, |
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* the user must have access to create entities. |
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* |
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* This method will also filter out "invalid" context objects before the |
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* actual controller method that executes the request is called. |
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* |
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* @param \Symfony\Component\Routing\Route $route |
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* The route the user is attempting to access. |
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* @param \Drupal\Core\Routing\RouteMatchInterface $route_match |
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* The route match for the route the user is attempting to access. |
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* @param \Drupal\Core\Session\AccountInterface $account |
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* The account to check access against. |
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* |
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* @return \Drupal\Core\Access\AccessResultInterface |
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* The access result for the user. |
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*/ |
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public function access(Route $route, RouteMatchInterface $route_match, AccountInterface $account) { |
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// Load the context from the parameters. |
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$requirement = $route->getRequirement($this->requirementsKey); |
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$ands = explode('+', $requirement); |
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$chain = []; |
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foreach ($ands as $requirement) { |
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$context = static::extractContext($route_match, $requirement); |
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if (empty($context)) { |
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return AccessResult::forbidden(); |
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} |
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// If no field config could be loaded for the context, we treat this as |
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// the user not being able to access the endpoint. |
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$field_config = $context->getFieldConfig(); |
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if ($field_config) { |
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$entity_type = $field_config->getTargetEntityTypeId(); |
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$entity_bundle = $field_config->getTargetBundle(); |
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$entity = $context->getEntity(); |
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// If the operation pertains to an existing entity, the user must have |
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// edit access to perform editor commands. If it is a new entity, the |
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// user must have create access. |
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if ($entity) { |
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$chain[] = $entity->access('edit', $account, TRUE); |
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} |
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else { |
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$chain[] = $this->entityTypeManager->getAccessControlHandler($entity_type) |
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->createAccess($entity_bundle, $account, [], TRUE); |
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} |
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} |
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else { |
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return AccessResult::forbidden(); |
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} |
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} |
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if (!empty($chain)) { |
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$access = AccessResult::allowed(); |
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foreach ($chain as $next_access) { |
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$access = $access->andIf($next_access); |
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} |
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} |
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else { |
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$access = AccessResult::neutral(); |
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} |
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return $access; |
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} |
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/** |
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* Extracts the context from a route match, given a requirement. |
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* |
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* @param \Drupal\Core\Routing\RouteMatchInterface $route_match |
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* The route match for the route the user is attempting to access. |
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* @param string $requirement |
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* The requirement string to get the parameter name from. |
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* |
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* @return \Drupal\paragraphs_editor\EditorCommand\CommandContextInterface|null |
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* The extracted context id or NULL if none could be extracted. |
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*/ |
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public static function extractContext(RouteMatchInterface $route_match, $requirement) { |
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if (preg_match('/\{(.*)\}$/', $requirement, $matches)) { |
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return $route_match->getParameter($matches[1]); |
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} |
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else { |
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return NULL; |
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} |
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} |
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} |
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christophersmith262 /
paragraphs_editor
