first upload all files

Modules/Cart/Http/Controllers/CartShippingMethodController.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Modules\Cart\Http\Controllers;
+
+use Modules\Cart\Facades\Cart;
+use Modules\Shipping\Facades\ShippingMethod;
+
+class CartShippingMethodController
+{
+    /**
+     * Store a newly created resource in storage.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function store()
+    {
+        $shippingMethod = ShippingMethod::get(request('shipping_method'));
+
+        Cart::addShippingMethod($shippingMethod);
+
+        return Cart::instance();
+    }
+}