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<?php |
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namespace Spinen\Transformers; |
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use Illuminate\Database\Eloquent\Collection; |
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use Illuminate\Pagination\LengthAwarePaginator; |
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use Illuminate\Support\Facades\Input; |
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use Spinen\Transformers\Exceptions\TransformerNotFoundException; |
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/** |
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* Class TransformableCollection |
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* |
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* @package App\Support\Transformation |
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*/ |
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class TransformableCollection extends Collection |
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{ |
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/** |
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* Fully Qualified Namespace to the Transformers |
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* |
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* @var string |
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*/ |
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protected $namespace = 'Spinen\Transformers'; |
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/** |
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* Build out the namespace to the transformers |
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* |
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* @return string |
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*/ |
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public function getNamespace() |
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{ |
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return trim($this->namespace, '\\'); |
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} |
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/** |
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* Make a transformer |
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* |
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* Allow the full path to the transformer class be specified or just the short name where it is concatenated to the |
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* getNamespace method. |
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* |
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* @param string $class |
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* |
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* @return \Illuminate\Foundation\Application|mixed |
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*/ |
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public function getTransformer($class) |
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{ |
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// If a full path to a class was passed in, use it, otherwise a |
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$class = (class_exists($class)) ? $class : $this->getTransformerClass($class); |
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return app($class); |
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} |
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public function getTransformerClass($class) |
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{ |
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$class = $this->getNamespace() . '\\' . $class; |
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if (class_exists($class)) { |
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return $class; |
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} |
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throw new TransformerNotFoundException(sprintf('Could not locate Transformer [%s]', $class)); |
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} |
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/** |
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* Transform the data |
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* |
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* @param string $class |
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* |
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* @return array |
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*/ |
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protected function runTransformation($class) |
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{ |
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return $this->getTransformer($class) |
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->transformCollection($this) |
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->toArray(); |
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} |
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/** |
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* Transform the collection |
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* |
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* You pass in a class name that is assume that the classes are located in app/Transformers/ |
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* |
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* @param string $class |
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* |
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* @return array |
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*/ |
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public function transformTo($class) |
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{ |
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return ['data' => $this->runTransformation($class)]; |
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} |
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/** |
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* Transform the collection to a paginated collection |
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* |
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* @param string $class |
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* |
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* @return LengthAwarePaginator |
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*/ |
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public function transformToWithPagination($class) |
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{ |
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$page = Input::get('page', 1); |
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$perPage = Input::get('limit', 5); |
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$offset = ($page * $perPage) - $perPage; |
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// TODO: Is there a way to slice before transforming, so that we don't waste time transforming unwanted data? |
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$arraySlice = array_slice($this->runTransformation($class), $offset, $perPage, true); |
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return new LengthAwarePaginator($arraySlice, $this->count(), $perPage); |
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} |
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} |
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spinen /
laravel-transformers
