Add order fields to Order model

Author: w3bdesign

database/migrations/2021_01_13_201433_create_orders_table.php

@@ -15,6 +15,9 @@ public function up()
     {
         Schema::create('orders', function (Blueprint $table) {
             $table->id();
+            $table->integer('user_id');
+            $table->string('transaction_id');
+            $table->integer('total')->default(0);
             $table->timestamps();
         });
     }