| 1 | <?php  | 
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| 13 | trait HasPivotForeignKey  | 
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| 14 | { | 
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| 15 | /**  | 
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| 16 | * @var null|string  | 
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| 17 | */  | 
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| 18 | protected $pivotForeignKey = null;  | 
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| 19 | |||
| 20 | /**  | 
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| 21 | * @param $params  | 
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| 22 | */  | 
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| 23 | public function checkParamPivotFk($params)  | 
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| 30 | |||
| 31 | |||
| 32 | /**  | 
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| 33 | * @return string  | 
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| 34 | */  | 
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| 35 | 1 | public function getPivotFK()  | 
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| 43 | |||
| 44 | /**  | 
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| 45 | * @param $name  | 
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| 46 | */  | 
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| 47 | 1 | public function setPivotFK($name)  | 
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| 51 | |||
| 52 | 1 | protected function initPivotFK()  | 
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| 56 | |||
| 57 | /**  | 
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| 58 | * @return string  | 
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| 59 | */  | 
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| 60 | 1 | protected function generatePivotFK()  | 
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| 64 | }  | 
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| 65 | 
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
Idableprovides a methodequalsIdthat 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.