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<?php |
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namespace Yajra\Datatables\Transformers; |
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use League\Fractal\Resource\Collection; |
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use League\Fractal\Serializer\SerializerAbstract; |
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use League\Fractal\TransformerAbstract; |
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class FractalTransformer |
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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 array $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(array $output, $transformer, $serializer = null) |
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{ |
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$fractal = app('datatables.fractal'); |
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if ($serializer !== null) { |
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$fractal->setSerializer($this->createSerializer($serializer)); |
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} |
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//Get transformer reflection |
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//Firs method parameter should be data/object to transform |
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$reflection = new \ReflectionMethod($transformer, 'transform'); |
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$parameter = $reflection->getParameters()[0]; |
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//If parameter is class assuming it requires object |
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//Else just pass array by default |
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if ($parameter->getClass()) { |
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$resource = new Collection($output, $this->createTransformer($transformer)); |
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} else { |
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$resource = new Collection( |
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$output, |
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$this->createTransformer($transformer) |
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); |
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} |
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$collection = $fractal->createData($resource)->toArray(); |
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return $collection['data']; |
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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) { |
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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
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