1 | <?php |
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21 | final class OrderPaymentMethodSelectionRequirementChecker implements OrderPaymentMethodSelectionRequirementCheckerInterface |
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22 | { |
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23 | /** |
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24 | * @var PaymentMethodsResolverInterface |
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25 | */ |
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26 | private $paymentMethodsResolver; |
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27 | |||
28 | public function __construct(PaymentMethodsResolverInterface $paymentMethodsResolver) |
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32 | |||
33 | /** |
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34 | * {@inheritdoc} |
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35 | */ |
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36 | public function isPaymentMethodSelectionRequired(OrderInterface $order) |
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54 | } |
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55 |
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: