REST API with transformation

rest_api_with_transformation.php

<?php
// https://www.youtube.com/watch?v=zST3gGvnoww
//https://medium.com/@dinotedesco/laravel-api-resources-what-if-you-want-to-manipulate-your-models-before-transformation-8982846ad22c


// Routes
$app->get('products', 'ProductsController@index');
$app->get('products/{id}', 'ProductsController@show');
$app->put('products/{id}', 'ProductsController@update');
$app->post('products', 'ProductsController@store');
$app->delete('products/{id}', 'ProductsController@destroy');

// transformar
namespace App\Transformers;
use App\Product;
use League\Fractal;

class ProductTransformer extends Fractal\TransformerAbstract
{
	public function transform(Product $product)
	{
	    return [
	        'id'      => (int) $product->id,
	        'product_name'   => $product->product_name,
	        'product_description'    =>  $product->product_description,
	        'created_at'    =>  $product->created_at->format('d-m-Y'),
	        'updated_at'    =>  $product->updated_at->format('d-m-Y'),
            'links'   => [
                [
                    'uri' => 'products/'.$product->id,
                ]
            ],
	    ];
	}
}

// controller
namespace App\Http\Controllers;
use App\Product;
use Illuminate\Http\Request;
use League\Fractal;
use League\Fractal\Manager;
use League\Fractal\Resource\Item;
use League\Fractal\Resource\Collection;
use League\Fractal\Pagination\IlluminatePaginatorAdapter;
use App\Transformers\ProductTransformer;
class ProductsController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    private $fractal;
    public function __construct()
    {
        $this->fractal = new Manager();  
    }
    /**
     * GET /products
     * 
     * @return array
     */
    public function index(){
        $paginator = Product::paginate();
        $products = $paginator->getCollection();
        $resource = new Collection($products, new ProductTransformer);
        $resource->setPaginator(new IlluminatePaginatorAdapter($paginator));
        return $this->fractal->createData($resource)->toArray();
    }
    public function show($id){
        $product = Product::find($id);
        $resource = new Item($product, new ProductTransformer);
        return $this->fractal->createData($resource)->toArray();
    }
    public function store(Request $request){
        //validate request parameters
        $this->validate($request, [
            'product_name' => 'bail|required|max:255',
            'product_description' => 'bail|required',
        ]);
        $product = Product::create($request->all());
        $resource = new Item($product, new ProductTransformer);
        return $this->fractal->createData($resource)->toArray();
    }
    public function update($id, Request $request){
        //validate request parameters
        $this->validate($request, [
            'product_name' => 'max:255',
        ]);
        //Return error 404 response if product was not found
        if(!Product::find($id)) return $this->errorResponse('product not found!', 404);
        $product = Product::find($id)->update($request->all());
        if($product){
            //return updated data
            $resource = new Item(Product::find($id), new ProductTransformer); 
            return $this->fractal->createData($resource)->toArray();
        }
        //Return error 400 response if updated was not successful        
        return $this->errorResponse('Failed to update product!', 400);
    }
    public function destroy($id){
        
        //Return error 404 response if product was not found
        if(!Product::find($id)) return $this->errorResponse('Product not found!', 404);
        //Return 410(done) success response if delete was successful
        if(Product::find($id)->delete()){
            return $this->customResponse('Product deleted successfully!', 410);
        }
        //Return error 400 response if delete was not successful
        return $this->errorResponse('Failed to delete product!', 400);
    }
    public function customResponse($message = 'success', $status = 200)
    {
        return response(['status' =>  $status, 'message' => $message], $status);
    }
}