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<?php |
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namespace AppBundle\Serializer; |
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use AppBundle\Entity\Survey\Survey; |
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use AppBundle\Entity\Survey\SurveyAnswer; |
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use Doctrine\Bundle\DoctrineBundle\Registry; |
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use Symfony\Component\PropertyAccess\PropertyAccessorInterface; |
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use Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface; |
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use Symfony\Component\Serializer\Exception\LogicException; |
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use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface; |
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use Symfony\Component\Serializer\NameConverter\NameConverterInterface; |
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use Symfony\Component\Serializer\Normalizer\DenormalizerInterface; |
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use Symfony\Component\Serializer\Normalizer\NormalizerInterface; |
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use Symfony\Component\Serializer\Normalizer\ObjectNormalizer; |
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class SurveyNormalizer extends ObjectNormalizer |
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{ |
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/** |
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* @var Registry |
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*/ |
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protected $doctrine; |
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/** |
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* SurveyNormalizer constructor. |
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* |
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* @param ClassMetadataFactoryInterface|null $classMDF |
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* @param NameConverterInterface|null $nameCv |
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* @param PropertyAccessorInterface|null $propAs |
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* @param PropertyTypeExtractorInterface|null $propTE |
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* @param Registry $doctrine |
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*/ |
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public function __construct($classMDF, $nameCv, $propAs, $propTE, Registry $doctrine) |
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{ |
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parent::__construct($classMDF, $nameCv, $propAs, $propTE); |
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$this->doctrine = $doctrine; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function supportsNormalization($data, $format = null) |
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{ |
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return $data instanceof Survey; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function normalize($object, $format = null, array $context = []) |
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{ |
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if (!$this->serializer instanceof NormalizerInterface) { |
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throw new LogicException('Cannot normalize attributes because injected serializer is not a normalizer'); |
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} |
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/** @var Survey $survey */ |
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$survey = &$object; |
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if (isset($context[ObjectNormalizer::GROUPS])) { |
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if ($context[ObjectNormalizer::GROUPS][0] == 'list') { |
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return $this->serializer->normalize(new \ArrayObject([ |
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'id' => $survey->getId(), |
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'type' => $survey->getType(), |
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'status' => $survey->getStatus(), |
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'createdAt' => $survey->getCreatedAt(), |
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'updatedAt' => $survey->getUpdatedAt(), |
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]), $format, $context); |
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} |
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} |
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return $this->serializer->normalize(new \ArrayObject([ |
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'id' => $survey->getId(), |
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'type' => $survey->getType(), |
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'status' => $survey->getStatus(), |
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'answers' => $survey->getAnswers(), |
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'createdAt' => $survey->getCreatedAt(), |
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'updatedAt' => $survey->getUpdatedAt(), |
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]), $format, $context); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function denormalize($data, $class, $format = null, array $context = array()) |
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{ |
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if (!$this->serializer instanceof DenormalizerInterface) { |
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throw new LogicException('Cannot normalize attributes because injected serializer is not a normalizer'); |
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} |
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if (!isset($context[ObjectNormalizer::OBJECT_TO_POPULATE])) { |
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throw new LogicException('Not found object_to_populate'); |
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} |
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/** @var Survey $survey */ |
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$survey = $context[ObjectNormalizer::OBJECT_TO_POPULATE]; |
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if (!array_key_exists('answers', $data)) { |
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throw new LogicException('Wrong json consruction'); |
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} |
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foreach ($data['answers'] as $item) { |
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$answer = $this->serializer->denormalize($item, SurveyAnswer::class, $format, $context); |
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$answer->setSurvey($survey); |
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$answers[] = $answer; |
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$this->doctrine->getManager()->persist($answer); |
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} |
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foreach ($answers as $answer) { |
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$questions[] = $answer->getQuestion()->getId(); |
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} |
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foreach ($survey->getQuestions() as $question) { |
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$surveyQuestions[] = $question->getId(); |
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} |
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if ($surveyQuestions !== $questions) { |
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throw new LogicException('Wrong json content'); |
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} |
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$survey->setStatus('submited'); |
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$this->doctrine->getManager()->persist($survey); |
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$this->doctrine->getManager()->flush(); |
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return $survey; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function supportsDenormalization($data, $type, $format = null) |
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{ |
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if ($type != Survey::class) { |
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return false; |
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} |
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return true; |
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} |
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} |
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Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.