public function view($id)
 {
     $purchase = Purchase::query()->find($id);
     $purchaseProducts = $purchase->purchaseProducts()->get();
     $products = [];
     foreach ($purchaseProducts as $sp) {
         $products[] = ['productId' => $sp->stockProduct->product->id, 'ammount' => $sp->ammount, 'name' => $sp->stockProduct->product->name, 'unit_price' => $sp->stockProduct->product->unit_price];
     }
     return view('pages.purchase_products', ['purchase' => $purchase, 'products' => $products]);
 }
 public function view($id)
 {
     $purchase = Purchase::query()->find($id);
     return ['purchase' => $purchase, 'products' => $purchase->purchaseProducts()->get()];
 }