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<?php |
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namespace Rexlabs\Laravel\Smokescreen\Transformers; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Support\Collection; |
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use Rexlabs\Laravel\Smokescreen\Exceptions\UnresolvedTransformerException; |
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use Rexlabs\Smokescreen\Resource\ResourceInterface; |
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use Rexlabs\Smokescreen\Transformer\TransformerResolverInterface; |
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class TransformerResolver implements TransformerResolverInterface |
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{ |
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/** @var string|null */ |
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protected $namespace; |
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/** |
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* TransformerResolver constructor. |
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* |
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* @param string $namespace |
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*/ |
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public function __construct(string $namespace) |
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{ |
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$this->namespace = $namespace; |
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} |
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/** |
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* Determines the Transformer object to be used for a particular resource. |
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* Inspects the underlying Eloquent model to determine an appropriately |
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* named transformer class, and instantiate the object. |
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* |
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* {@inheritdoc} |
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* |
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* @throws \Rexlabs\Laravel\Smokescreen\Exceptions\UnresolvedTransformerException |
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*/ |
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public function resolve(ResourceInterface $resource) |
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{ |
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$transformer = null; |
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// Find the underlying model of the resource data |
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$model = null; |
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$data = $resource->getData(); |
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if ($data instanceof Model) { |
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$model = $data; |
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} elseif ($data instanceof Collection) { |
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$model = $data->first(); |
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} |
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// If no model can be determined from the data |
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if ($model !== null) { |
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// Cool, now let's try to find a matching transformer based on our Model class |
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// We use our configuration value 'transformer_namespace' to determine where to look. |
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try { |
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$transformerClass = sprintf('%s\\%sTransformer', |
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$this->namespace, |
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(new \ReflectionClass($model))->getShortName()); |
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$transformer = resolve($transformerClass); |
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} catch (\Exception $e) { |
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throw new UnresolvedTransformerException('Unable to resolve transformer for model: '.\get_class($model), |
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0, $e); |
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} |
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} |
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return $transformer; |
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} |
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} |
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rexlabsio /
smokescreen-laravel-php
