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<?php |
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namespace Flugg\Responder\Resources; |
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use Flugg\Responder\Contracts\Resources\ResourceFactory as ResourceFactoryContract; |
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use Flugg\Responder\Contracts\Transformers\TransformerResolver; |
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use Illuminate\Support\Arr; |
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use League\Fractal\Resource\Collection as CollectionResource; |
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use League\Fractal\Resource\Item as ItemResource; |
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use League\Fractal\Resource\NullResource; |
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use League\Fractal\Resource\ResourceInterface; |
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use Traversable; |
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/** |
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* This class is responsible for making Fractal resources from a variety of data types. |
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* |
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* @package flugger/laravel-responder |
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* @author Alexander Tømmerås <[email protected]> |
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* @license The MIT License |
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*/ |
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class ResourceFactory implements ResourceFactoryContract |
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{ |
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/** |
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* A service class, used to normalize data. |
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* |
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* @var \Flugg\Responder\Resources\DataNormalizer |
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*/ |
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protected $normalizer; |
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/** |
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* A manager class, used to manage transformers. |
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* |
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* @var \Flugg\Responder\Contracts\Transformers\TransformerResolver |
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*/ |
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protected $transformerResolver; |
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/** |
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* Construct the factory class. |
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* |
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* @param \Flugg\Responder\Resources\DataNormalizer $normalizer |
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* @param \Flugg\Responder\Contracts\Transformers\TransformerResolver $transformerResolver |
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*/ |
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public function __construct(DataNormalizer $normalizer, TransformerResolver $transformerResolver) |
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{ |
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$this->normalizer = $normalizer; |
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$this->transformerResolver = $transformerResolver; |
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} |
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/** |
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* Make resource from the given data. |
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* |
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* @param mixed $data |
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* @param \Flugg\Responder\Transformers\Transformer|string|callable|null $transformer |
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* @param string|null $resourceKey |
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* @return \League\Fractal\Resource\ResourceInterface |
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*/ |
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public function make($data = null, $transformer = null, string $resourceKey = null): ResourceInterface |
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{ |
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if ($data instanceof ResourceInterface) { |
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return $data->setTransformer($this->resolveTransformer($data->getData(), $transformer ?: $data->getTransformer())); |
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} elseif (is_null($data = $this->normalizer->normalize($data))) { |
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return $this->instatiateResource($data); |
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} |
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$transformer = $this->resolveTransformer($data, $transformer); |
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return $this->instatiateResource($data, $transformer, $resourceKey); |
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} |
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/** |
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* Resolve a transformer. |
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* |
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* @param mixed $data |
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* @param \Flugg\Responder\Transformers\Transformer|string|callable|null $transformer |
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* @return \Flugg\Responder\Transformers\Transformer|callable |
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*/ |
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protected function resolveTransformer($data, $transformer) |
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{ |
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if (isset($transformer)) { |
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return $this->transformerResolver->resolve($transformer); |
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} |
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return $this->transformerResolver->resolveFromData($data); |
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} |
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/** |
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* Instatiate a new resource instance. |
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* |
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* @param mixed $data |
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* @param \Flugg\Responder\Transformers\Transformer|callable|null $transformer |
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* @param string|null $resourceKey |
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* @return \League\Fractal\Resource\ResourceInterface |
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*/ |
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protected function instatiateResource($data, $transformer = null, string $resourceKey = null): ResourceInterface |
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{ |
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if (is_null($data)) { |
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return new NullResource; |
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} elseif ($this->shouldCreateCollection($data)) { |
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return new CollectionResource($data, $transformer, $resourceKey); |
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} |
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return new ItemResource($data, $transformer, $resourceKey); |
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} |
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/** |
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* Indicates if the data belongs to a collection resource. |
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* |
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* @param mixed $data |
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* @return bool |
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*/ |
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protected function shouldCreateCollection($data): bool |
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{ |
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if (is_array($data)) { |
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return ! is_scalar(Arr::first($data)); |
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} |
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return $data instanceof Traversable; |
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} |
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} |
flugger /
laravel-responder
