alevel_project/database/migrations/2018_04_21_182224_create_profiles_table.php

<?php

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

class CreateProfilesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('profiles', function (Blueprint $table) {
            $table->increments('id');
            $table->unsignedInteger('user_id')->unique();
            $table->string('name');
            $table->string('surname');
            $table->enum('gender', ['m', 'f',null])->nullable();
            $table->string('country');
            $table->string('city');
            $table->integer('age');
            $table->string('hobby');


            $table->foreign('user_id')
                ->references('id')->on('users')
                ->onDelete('cascade');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('profiles', function (Blueprint $table) {
            $table->dropForeign(['user_id']);

        });
        Schema::dropIfExists('profiles');
    }
}