1 | <?php |
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18 | final class TaxonSlugGenerator implements TaxonSlugGeneratorInterface |
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19 | { |
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20 | /** |
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21 | * {@inheritdoc} |
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22 | */ |
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23 | public function generate(TaxonInterface $taxon, $locale = null) |
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40 | |||
41 | /** |
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42 | * @param string $string |
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43 | * |
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44 | * @return string |
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45 | */ |
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46 | private function transliterate($string) |
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51 | } |
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52 |
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: