1 | <?php |
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21 | class LdapUserPhotoSubscriber extends BaseSubscriber implements EventSubscriberInterface |
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22 | { |
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23 | /** |
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24 | * Get event listeners. |
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25 | * |
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26 | * @static |
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27 | * |
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28 | * @return array |
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29 | */ |
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30 | public static function getSubscribedEvents() |
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36 | |||
37 | /** |
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38 | * Save the user profile photo from LDAP to the object storage. |
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39 | * |
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40 | * @param UserProfileSyncEvent $event |
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41 | */ |
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42 | public function syncUserPhoto(UserProfileSyncEvent $event) |
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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: