server/database/migrations/2019_11_19_081344_create_notes_table.php
<?php

/*
  Plainpad - Self Hosted Note Taking App

  Copyright (C) 2020 Alex Tselegidis - https://alextselegidis.com

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <https://www.gnu.org/licenses/>
*/

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

class CreateNotesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('notes', function (Blueprint $table) {
            $table->string('id')->primary();
            $table->string('user_id');
            $table->timestamps();
            $table->text('title')->nullable();
            $table->longText('content')->nullable();
            $table->boolean('pinned')->default(false);

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

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