1 | <?php |
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5 | class CreateSectionServiceProvider extends Installator |
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6 | { |
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7 | /** |
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8 | * Вывод информации о текущей конфигурации. |
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9 | * |
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10 | * @return void |
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11 | */ |
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12 | public function showInfo() |
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16 | |||
17 | /** |
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18 | * Установка компонентов текущей конфигурации. |
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19 | * |
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20 | * @return void |
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21 | */ |
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22 | public function install() |
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35 | |||
36 | /** |
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37 | * При возврате методом true данный компонент будет пропущен. |
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38 | * |
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39 | * @return bool |
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40 | */ |
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41 | public function installed() |
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45 | |||
46 | /** |
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47 | * @return string |
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48 | */ |
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49 | protected function getFilePath() |
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53 | } |
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54 |
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: