| 1 | <?php |
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| 12 | class JobBindingCreateToQueueMapper extends BaseMapper |
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| 13 | { |
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| 14 | protected function mapMethod(JobBase $job) : Method |
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| 18 | |||
| 19 | /** |
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| 20 | * @param JobBindingCreateToQueue $job |
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| 21 | * @return Url |
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| 22 | */ |
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| 23 | protected function mapUrl(JobBase $job) : Url |
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| 33 | |||
| 34 | /** |
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| 35 | * @param JobBindingCreateToQueue $job |
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| 36 | * @return array |
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| 37 | */ |
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| 38 | protected function mapConfig(JobBase $job) : array { |
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| 52 | } |
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| 53 |
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: