| 1 | <?php |
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| 8 | class AjaxDetailsRow extends DetailsRow |
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| 9 | { |
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| 10 | |||
| 11 | protected $urlGenerator; |
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| 12 | |||
| 13 | public function __construct(callable $urlGenerator, ResourceManager $resourceManager = null) |
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| 20 | |||
| 21 | /** |
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| 22 | * @return callable |
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| 23 | */ |
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| 24 | public function getUrlGenerator() |
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| 28 | |||
| 29 | /** |
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| 30 | * @param callable $urlGenerator |
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| 31 | * @return $this |
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| 32 | */ |
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| 33 | public function setUrlGenerator(callable $urlGenerator) |
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| 38 | |||
| 39 | public function render() |
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| 44 | |||
| 45 | protected function getScriptSource() |
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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 sub-classes 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 parent class: