1 | <?php |
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25 | class QuoteManager extends AbstractManager { |
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26 | |||
27 | /** |
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28 | * Service name. |
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29 | * |
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30 | * @var string |
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31 | */ |
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32 | const SERVICE_NAME = "webeweb.core.manager.quote"; |
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33 | |||
34 | /** |
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35 | * {@inheritDoc} |
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36 | */ |
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37 | public function addProvider(ProviderInterface $provider) { |
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43 | |||
44 | /** |
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45 | * {@inheritDoc} |
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46 | */ |
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47 | public function contains(ProviderInterface $provider) { |
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59 | } |
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60 |
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: