shareit/database/migrations/2018_09_08_192152_create_items_table.php

<?php

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

class CreateItemsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('items', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->integer('product_id');
            $table->integer('used_by')->nullable();
            $table->integer('waiting_user_id')->nullable();
            $table->timestamps();
        });

        Schema::create('item_user', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('item_id');
            $table->integer('user_id');
            $table->primary(['item_id', 'user_id']);
        });
    }

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