fix bugs in update qty in cart method

app/Cart.php

@@ -13,6 +13,26 @@ class Cart /*extends Model*/
         $this->total_price = 0;
     }
 
+    public function updateTotalQty()
+    {
+        $result = 0;
+        foreach ($this->items as $item)
+        {
+            $result += $item['qty'];
+        }
+        $this->total_qty = $result;
+    }
+
+    public function updateTotalPrice()
+    {
+        $result = 0;
+        foreach ($this->items as $item)
+        {
+            $result += $item['qty'] * $item['item']->price;
+        }
+        $this->total_price = $result;
+    }
+
     public function addItem($product, $id)
     {
         if (array_key_exists($id, $this->items)) {
@@ -31,7 +51,20 @@ class Cart /*extends Model*/
     public function updateQty($products_qty)
     {
         foreach ($products_qty as $id => $qty) {
-            $this->items[$id]['qty'] = $qty;
+            if (!$qty) {
+                $this->removeItem($id);
+            } else {
+                $this->items[$id]['qty'] = (int)$qty;
+                $this->updateTotalQty();
+                $this->updateTotalPrice();
+            }
         }
     }
+
+    public function removeItem($id)
+    {
+        unset($this->items[$id]);
+        $this->updateTotalQty();
+        $this->updateTotalPrice();
+    }
 }

app/Http/Controllers/CartController.php

@@ -12,6 +12,9 @@ class CartController extends Controller
 {
     public function index()
     {
+//        testing
+//        Session::get('cart')->updateTotalPrice();
+//        endtest
 
         if (!Session::has('cart')) {
             return view('cart');

public/js/cart.js

@@ -16,7 +16,7 @@ function setUpdateCartQtyEventListener() {
             productsQty: JSON.stringify(productsQty)
         })
             .then(function (response) {
-                document.location.reload(true);;
+                document.location.reload(true);
             })
             .catch(function (error) {
                 console.log(error);
@@ -24,4 +24,9 @@ function setUpdateCartQtyEventListener() {
     });
 }
 
+function setRemoveItemEventListener() {
+
+}
+
 setUpdateCartQtyEventListener();
+setRemoveItemEventListener();

resources/views/cart.blade.php

@@ -16,7 +16,7 @@
                     </tr>
                     </thead>
 
-                    <tbody>
+                    <tbody class="">
                         @foreach($products as $product)
                             <tr>
                                 <td>

resources/views/welcome.blade.php

@@ -20,7 +20,7 @@
                             <p class="product__short-text">{{$product->description_short}}</p>
                             <p class="product__price">{{$product->price}} EUR</p>
 
-                            <button class="js-btn-add-to-basket btn btn-info"
+                            <button class="js-btn-add-to-basket btn btn-info text-white"
                                     data-action="{{ route('cart.addToCart', $product) }}"
                             >Add to basket</button>
                         </div>