<?php

use App\Models\EmployeeLeaveQuota;
use App\Models\LeaveType;
use App\Models\User;
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class AddColumnsParentInInvoiceTable extends Migration
{

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('invoices', function (Blueprint $table) {
            $table->unsignedInteger('parent_id')->nullable()->default(null);
            $table->foreign('parent_id')->references('id')->on('invoices')->onDelete('cascade')->onUpdate('cascade');

        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('invoices', function (Blueprint $table) {
            $table->dropColumn('parent_id');
        });
    }

}
