| 1 | <?php |
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| 7 | final class LoadingReferenceProvider implements ReferenceProviderInterface |
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| 8 | { |
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| 9 | /** |
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| 10 | * @var ManagerRegistry |
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| 11 | */ |
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| 12 | private $registry; |
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| 13 | |||
| 14 | /** |
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| 15 | * PartialReferenceProvider constructor. |
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| 16 | * |
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| 17 | * @param ManagerRegistry $registry |
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| 18 | */ |
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| 19 | public function __construct(ManagerRegistry $registry) |
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| 23 | |||
| 24 | /** {@inheritdoc} */ |
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| 25 | public function getEntityReference($fqcn, $property, $identifier) |
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| 37 | } |
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| 38 |
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: