2017_05_07_000030_create_characteristics_table.php

<?php

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

class CreateCharacteristicsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('characteristics', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->string('values');
            $table->integer('category_id')->unsigned()->nullable();
            $table->foreign('category_id')->references('id')->on('categories');
            $table->integer('vote_id')->unsigned()->nullable();
            $table->foreign('vote_id')->references('id')->on('votes');
            $table->timestamps();
        });
    }

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