<?php

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * Class Campaign
 * @package AppBundle\Entity
 * @ORM\Entity
 * @ORM\Table
 */
class Campaign
{
  // ....

  /**
	 * Image representing the sponsor of the campaign
	 * @var Image
	 * @ORM\ManyToOne(targetEntity="Image", cascade={"all"})
	 * @Assert\Valid
	 */
	protected $logoImage;

	/**
	 * Image representing the campaign
	 * @var Image
	 * @ORM\ManyToOne(targetEntity="Image", cascade={"all"})
	 * @Assert\NotBlank
	 * @Assert\Valid
	 */
	protected $heroImage;

	// ...
}