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1 | <?php |
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2 | |||
3 | /* |
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4 | * (c) Kévin Dunglas <[email protected]> |
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5 | * |
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6 | * This source file is subject to the MIT license that is bundled |
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7 | * with this source code in the file LICENSE. |
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8 | */ |
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9 | |||
10 | namespace Dunglas\DoctrineJsonOdm\Normalizer; |
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11 | |||
12 | use Symfony\Component\Serializer\Normalizer\DenormalizerInterface; |
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13 | use Symfony\Component\Serializer\Normalizer\NormalizerInterface; |
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14 | use Symfony\Component\Serializer\SerializerAwareInterface; |
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15 | use Symfony\Component\Serializer\SerializerInterface; |
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16 | |||
17 | /** |
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18 | * Transforms an object to an array with the following keys: |
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19 | * * _type: the class name |
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20 | * * _value: a representation of the values of the object. |
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21 | * |
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22 | * @author Kévin Dunglas <[email protected]> |
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23 | */ |
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24 | final class ObjectNormalizer implements NormalizerInterface, DenormalizerInterface, SerializerAwareInterface |
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25 | { |
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26 | /** |
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27 | * @var SerializerInterface |
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28 | */ |
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29 | private $serializer; |
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30 | private $objectNormalizer; |
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31 | |||
32 | public function __construct(NormalizerInterface $objectNormalizer) |
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33 | { |
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34 | if (!$objectNormalizer instanceof DenormalizerInterface) { |
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35 | throw new \InvalidArgumentException(sprintf('The normalizer used must implement the "%s" interface.', DenormalizerInterface::class)); |
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36 | } |
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37 | |||
38 | $this->objectNormalizer = $objectNormalizer; |
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39 | } |
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40 | |||
41 | /** |
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42 | * {@inheritdoc} |
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43 | */ |
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44 | public function normalize($object, $format = null, array $context = []) |
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45 | { |
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46 | return [ |
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47 | '_type' => get_class($object), |
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48 | '_value' => $this->objectNormalizer->normalize($object, $format, $context), |
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49 | ]; |
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50 | } |
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51 | |||
52 | /** |
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53 | * {@inheritdoc} |
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54 | */ |
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55 | public function supportsNormalization($data, $format = null) |
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56 | { |
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57 | return is_object($data); |
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58 | } |
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59 | |||
60 | /** |
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61 | * {@inheritdoc} |
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62 | */ |
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63 | public function denormalize($data, $class, $format = null, array $context = []) |
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64 | { |
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65 | if (isset($data['_value']) && isset($data['_type']) && is_array($data['_value'])) { |
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66 | $data['_value'] = $this->denormalize($data['_value'], $data['_type'], $format, $context); |
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67 | $data = $this->objectNormalizer->denormalize($data['_value'], $data['_type'], $format, $context); |
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68 | |||
69 | return $data; |
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70 | } |
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71 | |||
72 | if (is_array($data) || $data instanceof \Traversable) { |
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73 | foreach ($data as $key => $value) { |
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74 | $data[$key] = $this->serializer->denormalize($value, $class, $format, $context); |
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75 | } |
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76 | } |
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77 | |||
78 | return $data; |
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79 | } |
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80 | |||
81 | /** |
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82 | * {@inheritdoc} |
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83 | */ |
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84 | public function supportsDenormalization($data, $type, $format = null) |
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85 | { |
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86 | return true; |
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87 | } |
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88 | |||
89 | /** |
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90 | * {@inheritdoc} |
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91 | */ |
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92 | public function setSerializer(SerializerInterface $serializer) |
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93 | { |
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94 | $this->serializer = $serializer; |
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95 | |||
96 | if ($this->objectNormalizer instanceof SerializerAwareInterface) { |
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97 | $this->objectNormalizer->setSerializer($serializer); |
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98 | } |
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99 | } |
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100 | } |
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101 |
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: