izyim/database/migrations/2018_11_30_085832_create_packages.php

<?php

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

class CreatePackages extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('packages', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('list_id')->unsigned()->index();
            $table->string('description');
            $table->integer('width');
            $table->integer('length');
            $table->integer('height');
            $table->integer('quantity');
            $table->timestamps();

            $table->foreign('list_id')->references('id')->on('packing_lists');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('packages');
    }
}