modelHomework/Book.php

<?php

/**
 * Created by PhpStorm.
 * User: root
 * Date: 31.07.18
 * Time: 10:58
 */
class Book extends Model
{

    public function __construct()
    {
        static::$table = "book";
        static::$fields = ['name', 'year', 'user_id'];
        static::$pk = "id";
        parent::__construct();
    }

    public function createRow(string $name, string $year, string $user_id)
    {
        $query =
            "INSERT INTO" . self::$table . " (`" . implode("`, `", self::$fields) . "`)" .
            " VALUES (" . $name . ", " . $year . ", " . $user_id . ");";

        $this->connection->exec($query);
    }
}