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<?php |
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/** |
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* Schema constraint that validates if readOnly: true fields are manipulated and rejects changes on those. |
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*/ |
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namespace Graviton\SchemaBundle\Constraint; |
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use Doctrine\ODM\MongoDB\DocumentManager; |
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use Graviton\JsonSchemaBundle\Validator\Constraint\Event\ConstraintEventSchema; |
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use Graviton\RestBundle\Service\RestUtils; |
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use Symfony\Component\PropertyAccess\PropertyAccess; |
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/** |
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* @author List of contributors <https://github.com/libgraviton/graviton/graphs/contributors> |
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License |
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* @link http://swisscom.ch |
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*/ |
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class ReadOnlyFieldConstraint |
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{ |
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/** |
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* @var DocumentManager |
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*/ |
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private $dm; |
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/** |
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* @var RestUtils |
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*/ |
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private $restUtils; |
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/** |
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* @var array |
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*/ |
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private $fieldMap; |
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/** |
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* ReadOnlyFieldConstraint constructor. |
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* |
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* @param DocumentManager $dm DocumentManager |
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* @param RestUtils $restUtils RestUtils |
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* @param array $readOnlyFieldsMap field map from compiler pass |
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*/ |
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public function __construct(DocumentManager $dm, RestUtils $restUtils, array $readOnlyFieldsMap) |
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{ |
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$this->dm = $dm; |
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$this->restUtils = $restUtils; |
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$this->fieldMap = $readOnlyFieldsMap; |
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} |
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/** |
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* Checks the readOnly fields and sets error in event if needed |
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* |
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* @param ConstraintEventSchema $event event class |
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* |
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* @return void |
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*/ |
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public function checkReadOnlyFields(ConstraintEventSchema $event) |
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{ |
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$schema = $event->getSchema(); |
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$data = $event->getElement(); |
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if (!isset($schema->{'x-documentClass'}) || !isset($data->id)) { |
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return; |
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} |
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$documentClass = $schema->{'x-documentClass'}; |
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if (!isset($this->fieldMap[$documentClass])) { |
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return; |
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} |
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$readOnlyFields = $this->fieldMap[$documentClass]; |
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$recordId = $data->id; |
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// get the current record |
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$currentRecord = $this->getCurrentRecordSerializedAndBack($documentClass, $recordId); |
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if (is_null($currentRecord)) { |
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return; |
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} |
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// compare fields in both objects |
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$accessor = PropertyAccess::createPropertyAccessor(); |
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foreach ($readOnlyFields as $fieldName) { |
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$storedValue = null; |
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if ($accessor->isReadable($currentRecord, $fieldName)) { |
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$storedValue = $accessor->getValue($currentRecord, $fieldName); |
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} |
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if (is_object($storedValue)) { |
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// skip objects as a whole, we will test their readOnly properties instead |
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continue; |
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} |
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$setValue = null; |
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if ($accessor->isReadable($data, $fieldName)) { |
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$setValue = $accessor->getValue($data, $fieldName); |
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} |
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if ($storedValue != $setValue) { |
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$event->addError( |
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sprintf('The value %s is read only.', json_encode($accessor->getValue($currentRecord, $fieldName))), |
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$fieldName |
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); |
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} |
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} |
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} |
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/** |
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* to make sure we don't compare apple and oranges, we let the serializer |
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* do what he does and bring it back as object. only then all friends like extref |
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* (exposeAs) and so on are resolved and we can truly compare structures.. |
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* |
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* @param string $documentClass document class |
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* @param string $recordId record id |
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* |
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* @return object stored object in presentation form |
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*/ |
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private function getCurrentRecordSerializedAndBack($documentClass, $recordId) |
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{ |
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$current = $this->dm->getRepository($documentClass)->find($recordId); |
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if (is_null($current)) { |
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return null; |
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} |
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return json_decode($this->restUtils->serializeContent($current)); |
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} |
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} |
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libgraviton /
graviton
