bookstack/database/migrations/2015_11_21_145609_create_views_table.php

<?php

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

return new class extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('views', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('user_id');
            $table->integer('viewable_id');
            $table->string('viewable_type');
            $table->integer('views');
            $table->nullableTimestamps();
        });
    }

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