1 | <?php |
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11 | trait HasModules |
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12 | { |
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13 | /** |
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14 | * The study modules that belongs to the model. |
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15 | */ |
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16 | public function modules() |
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20 | |||
21 | /** |
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22 | * Add a module to modules. |
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23 | * |
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24 | * @param Module $module |
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25 | */ |
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26 | public function addModule($module){ |
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29 | |||
30 | /** |
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31 | * Add a module by id to modules. |
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32 | * |
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33 | * @param Module $module |
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34 | */ |
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35 | public function addModuleById($module){ |
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38 | |||
39 | } |
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.