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How to validate relationships on object creation. ---> code execution: https://3v4l.org/t7JqO#v700
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<?php | |
declare(strict_types = 1); | |
namespace App | |
{ | |
class Product | |
{ | |
private $id; | |
private $name; | |
private $volumes; | |
/** | |
* Product constructor. | |
* @param int $id | |
* @param string $name | |
* @param array $volumes | |
* @throws \InvalidArgumentException | |
*/ | |
public function __construct(int $id, string $name, array $volumes) | |
{ | |
$this->id = $id; | |
$this->name = $name; | |
if (count($volumes) === 0) { | |
throw new \InvalidArgumentException('Your product must have 1 product at least.'); | |
} | |
$this->volumes = $this->prepareVolumes($volumes); | |
} | |
private function prepareVolumes(array $volumes) | |
{ | |
foreach ($volumes as $volume) { | |
$volume->setProduct($this); | |
} | |
return $volumes; | |
} | |
} | |
class Volume | |
{ | |
protected $id; | |
protected $product; | |
protected $description; | |
public function __construct(string $description) | |
{ | |
$this->description = $description; | |
} | |
public function setProduct(Product $product) | |
{ | |
$this->product = $product; | |
} | |
} | |
class ProductTest | |
{ | |
public function __construct() | |
{ | |
$volume1 = new Volume('part-1'); | |
$volume2 = new Volume('part-2'); | |
$volume3 = new Volume('part-3'); | |
$product = new Product(1, 'BED', [$volume1, $volume2, $volume3]); | |
$invalidProduct = new Product(2, 'Table', []); | |
} | |
} | |
return new ProductTest(); | |
} |
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