1 | <?php |
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8 | final class PaymentMethodViewFactory implements PaymentMethodViewFactoryInterface |
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9 | { |
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10 | /** @var string */ |
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11 | private $paymentMethodViewClass; |
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12 | |||
13 | public function __construct(string $paymentMethodViewClass) |
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17 | |||
18 | /** |
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19 | * {@inheritdoc} |
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20 | */ |
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21 | public function create(PaymentMethodInterface $paymentMethod, string $locale): PaymentMethodView |
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32 | } |
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33 |
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: