<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class AddMoreFieldsToArtistTracks extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('artist_tracks', function (Blueprint $table) {
            $table->string('title_romanized')->after('title')->nullable();
            $table->integer('display_order')->after('album_id')->nullable();
        });
    }

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

Add extra fields to artist_tracks
Add extra fields to artist_tracks