Created
May 17, 2016 13:32
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Trait for Laravel 5 models that have composite keys.
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| <?php | |
| namespace App\Traits; | |
| use Exception; | |
| use Illuminate\Database\Eloquent\Builder; | |
| /** | |
| * Use this trait if your model has a composite primary key. | |
| * The primary key should then be an array with all applicable columns. | |
| * | |
| * Class HasCompositeKey | |
| * @package App\Traits | |
| */ | |
| trait HasCompositeKey | |
| { | |
| /** | |
| * Get the value indicating whether the IDs are incrementing. | |
| * | |
| * @return bool | |
| */ | |
| public function getIncrementing() | |
| { | |
| return false; | |
| } | |
| /** | |
| * Set the keys for a save update query. | |
| * | |
| * @param Builder $query | |
| * @return Builder | |
| * @throws Exception | |
| */ | |
| protected function setKeysForSaveQuery(Builder $query) | |
| { | |
| foreach ($this->getKeyName() as $key) { | |
| if ($this->$key) | |
| $query->where($key, '=', $this->$key); | |
| else | |
| throw new Exception(__METHOD__ . 'Missing part of the primary key: ' . $key); | |
| } | |
| return $query; | |
| } | |
| } |
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