Extending adesigns EventEntity class

Question

Hello guys i'm newbie on Symfony and making a web using sonata admin bundle. I wanted to add event on adesigns calendar bundle from sonata admin but when i extend EventEntity class and try to add new event, it gave me below error:

Type error: Argument 2 passed to AppBundle\Entity\Schedule::__construct() must be an instance of DateTime, none given, called in /path/to/project/vendor/sonata-project/doctrine-orm-admin-bundle/Model/ModelManager.php on line 509

I know it causes type of DateTime, but i don't know how to solve it.

Here's the extended code:

<?php

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use ADesigns\CalendarBundle\Entity\EventEntity;

/**
 * Schedule
 *
 * @ORM\Table(name="schedule")
 * @ORM\Entity(repositoryClass="AppBundle\Repository\ScheduleRepository")
 */
class Schedule extends EventEntity {
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @var  string
     * @ORM\Column(name="title", type="string", length=255)
     */
    protected $title;

    /**
     * @var  string
     * @ORM\Column(name="url", type="string", length=255, nullable=true)
     */
    protected $url;

    /**
     * @var  string
     * @ORM\Column(name="bgColor", type="string", length=255)
     */
    protected $bgColor;

    /**
     * @var  string
     * @ORM\Column(name="fgColor", type="string", length=255)
     */
    protected $fgColor;

    /**
     * @var  string
     * @ORM\Column(name="cssClass", type="string", length=255, nullable=true)
     */
    protected $cssClass;

    /**
     * @var  bool
     * @ORM\Column(name="allDay", type="boolean")
     */
    protected $allDay;

    /**
     * @var  DateTime
     * @ORM\Column(name="startDatetime", type="datetime")
     */
    protected $startDatetime;

    /**
     * @var  DateTime
     * @ORM\Column(name="endDatetime", type="datetime")
     */
    protected $endDatetime;

    public function __construct($title, \DateTime $startDatetime, \DateTime $endDatetime = null, $allDay = false, $hall) {
        parent::__construct($title, $startDatetime, $endDatetime, $allDay);
        $this->hall = $hall;
    }

    /**
     * Get id
     *
     * @return int
     */
    public function getId() {
        return $this->id;
    }
}

Answer 1

If you try to extend a Doctrine entity not designed for that you will encounter problems.

You should use an event listener or a subscriber class instead.