| 1 | <?php |
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| 15 | class AjaxController extends Controller |
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| 16 | { |
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| 17 | |||
| 18 | /** |
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| 19 | * Contructor |
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| 20 | */ |
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| 21 | public function __construct() |
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| 26 | |||
| 27 | /** |
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| 28 | * Before |
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| 29 | */ |
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| 30 | public function _before() |
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| 34 | |||
| 35 | /** |
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| 36 | * setStatusCode |
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| 37 | * |
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| 38 | */ |
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| 39 | public function setStatusCode($code = null) |
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| 45 | |||
| 46 | public function setErrors($errors = null) |
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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: