How to solve exception NotNormalizableValueException during deserialization array of objects in Serializer Component?

Question

The following error occurs during object deserialization:

Symfony\Component\Serializer\Exception\NotNormalizableValueException

The type of the "products" attribute for class "shop\manage\flexbe\objects\Lead" must be one of "shop\manage\flexbe\objects\Product[]" ("array" given).

Have JSON-object:

{
  "id": "9757241",
  "time": "1567105530",
  // other params
  "products": [
    {
    "title": "Product name",
    "count": 1
    }
  ]
}

In the Lead class that describes the object related methods to "products":

private $products = [];

/**
 * @return Product[]
 */
public function getProducts()
{
    return $this->products;
}

/**
 * @param Product $product
*/
public function addProduct(Product $product): void
{
    $this->products[] = $product;
}

Deserialization Code:

$normalizer = new ObjectNormalizer(null, null, new PropertyAccessor(), new ReflectionExtractor());
$serializer = new Serializer(array($normalizer), array(new JsonEncoder()));
$lead =  $serializer->deserialize($data, Lead::class, 'json');

I can’t understand what the problem is. It is expected using the addProduct() method deserializer should bypass the array and add all objects to Product class like in this case.

Mark L · Accepted Answer · 2020-04-26 11:33:22Z

0

I decided using an ArrayDenormalizer, and a setter with PHPDoc indicating the data type, an array of Products [] objects. But why the method with addProduct () did not work - the question remains.

Deserialization:

$encoder = [new JsonEncoder()];
$extractor = new PropertyInfoExtractor([], [new ReflectionExtractor()]);
$normalizer = [new ArrayDenormalizer(), new ObjectNormalizer(null, null, null, $extractor)];
$serializer = new Serializer($normalizer, $encoder);
/** @var $lead Lead  */
$lead = $serializer->deserialize($data,Lead::class,'json');

Setter for products in the Lead class:

/**
* @param Product[] $products
*/
public function setProducts(array $products)
{
$this->products = $products;
}

answered Apr 26, 2020 at 11:33

Mark L

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