<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Capsule\Manager as Capsule;

class AddSubarticles extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        $builder = Capsule::schema();

        $builder->table('articles', function($table) {

            $table->unsignedInteger('main_article_id')->nullable();
            $table->foreign('main_article_id')->references('id')->on('articles');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        $builder = Capsule::schema();

        $builder->table('articles', function($table) {
            $table->dropColum('main_article_id');
        });
    }
}