| 1 | <?php |
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| 8 | abstract class BaseFormatter |
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| 9 | { |
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| 10 | protected $twig; |
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| 11 | protected $eventDispatcher; |
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| 12 | |||
| 13 | public function setTemplating(\Twig_Environment $twig) |
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| 17 | |||
| 18 | public function setDispatcher(EventDispatcherInterface $eventDispatcher) |
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| 22 | |||
| 23 | protected function renderTwigTemplate($data, $user, $template) |
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| 33 | |||
| 34 | public function format(NotificationInterface $notification) |
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| 47 | } |
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: