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<?php |
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/** |
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* @author Jared King <[email protected]> |
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* |
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* @see http://jaredtking.com |
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* |
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* @copyright 2015 Jared King |
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* @license MIT |
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*/ |
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namespace Pulsar\Relation; |
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use Pulsar\Model; |
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use Pulsar\Query; |
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final class Polymorphic extends AbstractRelation |
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{ |
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/** @var string */ |
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private $localTypeKey; |
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/** @var string */ |
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private $localIdKey; |
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/** @var array */ |
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private $modelMapping; |
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public function __construct(Model $localModel, string $localTypeKey, string $localIdKey, array $modelMapping, string $foreignKey) |
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{ |
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$this->localModel = $localModel; |
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$this->localTypeKey = $localTypeKey; |
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$this->localIdKey = $localIdKey; |
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$this->modelMapping = $modelMapping; |
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$this->foreignKey = $foreignKey; |
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} |
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public function getLocalTypeKey(): string |
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{ |
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return $this->localTypeKey; |
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} |
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public function getLocalIdKey(): string |
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{ |
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return $this->localIdKey; |
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} |
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public function getModelMapping(): array |
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{ |
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return $this->modelMapping; |
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} |
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/** |
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* Returns the query instance for this relation. |
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*/ |
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public function getQuery(): Query |
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{ |
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$foreignModel = $this->modelMapping[$this->localModel->{$this->localTypeKey}]; |
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if (null === $foreignModel) { |
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$this->empty = true; |
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return new Query(); |
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} |
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$query = new Query(new $foreignModel()); |
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$id = $this->localModel->{$this->localIdKey}; |
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if (null === $id) { |
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$this->empty = true; |
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} |
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$query->where($this->foreignKey, $id) |
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->limit(1); |
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return $query; |
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} |
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protected function initQuery(Query $query): Query |
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{ |
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return $query; |
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} |
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public function getResults() |
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{ |
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$query = $this->getQuery(); |
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if ($this->empty) { |
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return null; |
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} |
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return $query->first(); |
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} |
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public function save(Model $model): Model |
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{ |
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$model->saveOrFail(); |
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$this->attach($model); |
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return $model; |
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} |
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public function create(array $values = []): Model |
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{ |
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$class = $this->modelMapping[$this->localModel->{$this->localTypeKey}]; |
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$model = new $class(); |
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$model->create($values); |
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$this->attach($model); |
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return $model; |
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} |
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/** |
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* Attaches this model to an owning model. |
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* |
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* @param Model $model owning model |
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*/ |
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public function attach(Model $model): void |
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{ |
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$type = array_search(get_class($model), $this->modelMapping); |
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$this->localIdKey->{$this->localTypeKey} = $type; |
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$this->localModel->{$this->localIdKey} = $model->{$this->foreignKey}; |
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$this->localModel->saveOrFail(); |
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} |
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/** |
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* Detaches this model from the owning model. |
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*/ |
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public function detach(): void |
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{ |
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$this->localModel->{$this->localTypeKey} = null; |
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$this->localModel->{$this->localIdKey} = null; |
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$this->localModel->saveOrFail(); |
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} |
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} |
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jaredtking /
pulsar
