public function index()
 {
     $purchases = Purchase::all();
     $response = [];
     foreach ($purchases as $purchase) {
         $prods = [];
         $pps = $purchase->purchaseProducts()->get();
         foreach ($pps as $pp) {
             $prods[] = $pp->product->name;
         }
         $response[] = ['purchase' => $purchase->created_at->toDateString(), 'products' => $prods];
     }
     return $response;
 }
 /**
  * @GET("/requests", as="admin.requests.users")
  * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
  */
 public function index()
 {
     $requests = Purchase::all();
     $minus = Minus::all()->first();
     return view('admin.requests.index', compact('requests', 'minus'));
 }