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<?php |
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namespace Yajra\DataTables\Transformers; |
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use League\Fractal\Manager; |
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use League\Fractal\Resource\Collection; |
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use League\Fractal\TransformerAbstract; |
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use League\Fractal\Serializer\SerializerAbstract; |
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class FractalTransformer |
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{ |
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/** |
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* @var \League\Fractal\Manager |
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*/ |
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protected $fractal; |
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/** |
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* FractalTransformer constructor. |
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* |
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* @param \League\Fractal\Manager $fractal |
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*/ |
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public function __construct(Manager $fractal) |
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{ |
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$this->fractal = $fractal; |
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} |
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/** |
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* Transform output using the given transformer and serializer. |
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* |
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* @param mixed $output |
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* @param mixed $transformer |
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* @param mixed $serializer |
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* @return array |
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*/ |
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public function transform($output, $transformer, $serializer = null) |
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{ |
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if ($serializer !== null) { |
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$this->fractal->setSerializer($this->createSerializer($serializer)); |
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} |
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$collector = []; |
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foreach ($transformer as $transform) { |
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if ($transform != null) { |
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$resource = new Collection($output, $this->createTransformer($transform)); |
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$collection = $this->fractal->createData($resource)->toArray(); |
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$transformed = $collection['data'] ?? $collection; |
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$collector = array_map( |
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function ($item_collector, $item_transformed) { |
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if ($item_collector === null) { |
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$item_collector = []; |
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} |
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return array_merge($item_collector, $item_transformed); |
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}, $collector, $transformed |
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); |
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} |
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} |
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return $collector; |
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} |
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/** |
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* Get or create transformer serializer instance. |
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* |
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* @param mixed $serializer |
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* @return \League\Fractal\Serializer\SerializerAbstract |
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*/ |
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protected function createSerializer($serializer) |
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{ |
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if ($serializer instanceof SerializerAbstract) { |
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return $serializer; |
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} |
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return new $serializer(); |
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} |
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/** |
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* Get or create transformer instance. |
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* |
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* @param mixed $transformer |
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* @return \League\Fractal\TransformerAbstract |
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*/ |
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protected function createTransformer($transformer) |
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{ |
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if ($transformer instanceof TransformerAbstract || $transformer instanceof \Closure) { |
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return $transformer; |
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} |
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return new $transformer(); |
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} |
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} |
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yajra /
laravel-datatables-fractal
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