1 | <?php |
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11 | class JobPermissionCreateMapper extends BaseMapper |
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12 | { |
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13 | |||
14 | 1 | protected function mapMethod() : Method { |
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17 | |||
18 | /** |
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19 | * @param JobPermissionCreate $job |
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20 | * @return Url |
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21 | */ |
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22 | 1 | protected function mapUrl(JobBase $job) : Url { |
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28 | |||
29 | /** |
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30 | * @param JobPermissionCreate $job |
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31 | * @return array |
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32 | */ |
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33 | 1 | protected function mapConfig(JobBase $job) : array { |
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44 | } |
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45 |
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: