1 | <?php |
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18 | final class PostRoute implements RouteInterface |
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19 | { |
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20 | /** |
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21 | * @var Configuration |
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22 | */ |
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23 | private $configuration; |
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24 | |||
25 | public function __construct(Configuration $configuration) |
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29 | |||
30 | public function matches(AbstractFile $file) : bool |
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34 | |||
35 | /** |
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36 | * @param PostFile $file |
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37 | */ |
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38 | public function buildOutputPath(AbstractFile $file) : string |
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42 | |||
43 | /** |
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44 | * @param PostFile $file |
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45 | */ |
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46 | public function buildRelativeUrl(AbstractFile $file) : string |
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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 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: