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: