first upload all files

Modules/Coupon/Admin/CouponTable.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Modules\Coupon\Admin;
+
+use Modules\Admin\Ui\AdminTable;
+
+class CouponTable extends AdminTable
+{
+    /**
+     * Make table response for the resource.
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function make()
+    {
+        return $this->newTable()
+            ->addColumn('discount', function ($coupon) {
+                return $coupon->is_percent
+                    ? "{$coupon->value}%"
+                    : $coupon->value->format();
+            });
+    }
+}