Product.php

<?php

namespace Eshop;

use Brabijan\Images\ImageProvider;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity()
 */
class Product implements ImageProvider
{

	/**
	 * @ORM\Column(name="id", type="integer")
	 * @ORM\Id
	 * @ORM\GeneratedValue(strategy="AUTO")
	 */
	protected $id;

	/**
	 * @ORM\OneToMany(targetEntity="ProductPhoto", mappedBy="product")
	 * @var ProductPhoto[]|ArrayCollection
	 */
	protected $photos;
	
	
	
	public function getDefaultPhoto() {
	  // returns default photo entity
	}



	/**
	 * @return string
	 */
	public static function getNamespace()
	{
		return $this->getDefaultPhoto()->getNamespace();
	}



	/**
	 * @return string
	 */
	public function getFilename()
	{
		return $this->getDefaultPhoto()->getFilename();
	}

}

ProductDetail.latte

<img n:img="$product, 200x200, fill">
{foreach $product->getPhotos() as $photo}
    <img n:if="!$photo->default" n:img="$photo, 100x100, fill">
{/foreach}

ProductPhoto.php

<?php

namespace Eshop;

use Brabijan\Images\ImageProvider;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity()
 * @property $id
 * @property $filename
 * @property Product $product
 */
class ProductPhoto implements ImageProvider
{

	/**
	 * @ORM\Column(name="id", type="integer")
	 * @ORM\Id
	 * @ORM\GeneratedValue(strategy="AUTO")
	 */
	protected $id;

	/** @ORM\Column(type="string") */
	protected $filename;

	/**
	 * @ORM\ManyToOne(targetEntity="Product", inversedBy="photos")
	 * @var Product
	 */
	protected $product;

	/** @ORM\Column(type="boolean") */
	protected $default = FALSE;



	/**
	 * @return string
	 */
	public static function getNamespace()
	{
		return "product-photo";
	}



	/**
	 * @return string
	 */
	public function getFilename()
	{
		return $this->filename;
	}

}