Viewing file:  FractalPresenter.php (4.03 KB) -rw-rw-rw-
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<?php
namespace Prettus\Repository\Presenter;
use Exception;
use Illuminate\Database\Eloquent\Collection as EloquentCollection;
use Illuminate\Pagination\AbstractPaginator;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Pagination\Paginator;
use League\Fractal\Manager;
use League\Fractal\Pagination\IlluminatePaginatorAdapter;
use League\Fractal\Resource\Collection;
use League\Fractal\Resource\Item;
use League\Fractal\Serializer\SerializerAbstract;
use Prettus\Repository\Contracts\PresenterInterface;
/**
* Class FractalPresenter
* @package Prettus\Repository\Presenter
* @author Anderson Andrade <contato@andersonandra.de>
*/
abstract class FractalPresenter implements PresenterInterface
{
/**
* @var string
*/
protected $resourceKeyItem = null;
/**
* @var string
*/
protected $resourceKeyCollection = null;
/**
* @var \League\Fractal\Manager
*/
protected $fractal = null;
/**
* @var \League\Fractal\Resource\Collection
*/
protected $resource = null;
/**
* @throws Exception
*/
public function __construct()
{
if (!class_exists('League\Fractal\Manager')) {
throw new Exception(trans('repository::packages.league_fractal_required'));
}
$this->fractal = new Manager();
$this->parseIncludes();
$this->setupSerializer();
}
/**
* @return $this
*/
protected function setupSerializer()
{
$serializer = $this->serializer();
if ($serializer instanceof SerializerAbstract) {
$this->fractal->setSerializer(new $serializer());
}
return $this;
}
/**
* @return $this
*/
protected function parseIncludes()
{
$request = app('Illuminate\Http\Request');
$paramIncludes = config('repository.fractal.params.include', 'include');
if ($request->has($paramIncludes)) {
$this->fractal->parseIncludes($request->get($paramIncludes));
}
return $this;
}
/**
* Get Serializer
*
* @return SerializerAbstract
*/
public function serializer()
{
$serializer = config('repository.fractal.serializer', 'League\\Fractal\\Serializer\\DataArraySerializer');
return new $serializer();
}
/**
* Transformer
*
* @return \League\Fractal\TransformerAbstract
*/
abstract public function getTransformer();
/**
* Prepare data to present
*
* @param $data
*
* @return mixed
* @throws Exception
*/
public function present($data)
{
if (!class_exists('League\Fractal\Manager')) {
throw new Exception(trans('repository::packages.league_fractal_required'));
}
if ($data instanceof EloquentCollection) {
$this->resource = $this->transformCollection($data);
} elseif ($data instanceof AbstractPaginator) {
$this->resource = $this->transformPaginator($data);
} else {
$this->resource = $this->transformItem($data);
}
return $this->fractal->createData($this->resource)->toArray();
}
/**
* @param $data
*
* @return Item
*/
protected function transformItem($data)
{
return new Item($data, $this->getTransformer(), $this->resourceKeyItem);
}
/**
* @param $data
*
* @return \League\Fractal\Resource\Collection
*/
protected function transformCollection($data)
{
return new Collection($data, $this->getTransformer(), $this->resourceKeyCollection);
}
/**
* @param AbstractPaginator|LengthAwarePaginator|Paginator $paginator
*
* @return \League\Fractal\Resource\Collection
*/
protected function transformPaginator($paginator)
{
$collection = $paginator->getCollection();
$resource = new Collection($collection, $this->getTransformer(), $this->resourceKeyCollection);
$resource->setPaginator(new IlluminatePaginatorAdapter($paginator));
return $resource;
}
}
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