I'm fairly new to Symfony 5.4 and recently created my first API using that version
For my specific API endpoint, one of the parameters is an array of IDs.
I need to validate the array via:
I implemented it in a simple way, checking the array before persisting the entity using typecasting and the existing Repository:
$parentPropertyIds = (array)$request->request->get('parent_property_ids');
if ($parentPropertyIds) {
$parentCount = $doctrine->getRepository(Property::class)->countByIds($parentPropertyIds);
if ($parentCount !== count($parentPropertyIds)) {
return $this->json([
'status' => 'error',
'message' => 'parent_property_id_invalid'
], 422);
}
foreach ($parentPropertyIds as $parentPropertyId) {
$parentProperty = $doctrine->getRepository(Property::class)->find($parentPropertyId);
$property->addParent($parentProperty);
}
}
However, this makes my controller actions too "body positive" and feels like something that could be implemented in a more elegant way.
I can't find anything in the Symfony 5.4 documentation.
Currently I want to know if:
Full endpoint code:
/**
* @Route("/property", name="property_new", methods={"POST"})
*/
public function create(ManagerRegistry $doctrine, Request $request, ValidatorInterface $validator): Response
{
$entityManager = $doctrine->getManager();
$property = new Property();
$property->setName($request->request->get('name'));
$property->setCanBeShared((bool)$request->request->get('can_be_shared'));
$parentPropertyIds = (array)$request->request->get('parent_property_ids');
if ($parentPropertyIds) {
$parentCount = $doctrine
->getRepository(Property::class)
->countByIds($parentPropertyIds);
if ($parentCount !== count($parentPropertyIds)) {
return $this->json([
'status' => 'error',
'message' => 'parent_property_id_invalid'
], 422);
}
foreach ($parentPropertyIds as $parentPropertyId) {
$parentProperty = $doctrine->getRepository(Property::class)->find($parentPropertyId);
$property->addParent($parentProperty);
}
}
$errors = $validator->validate($property);
if (count($errors) > 0) {
$messages = [];
foreach ($errors as $violation) {
$messages[$violation->getPropertyPath()][] = $violation->getMessage();
}
return $this->json([
'status' => 'error',
'messages' => $messages
], 422);
}
$entityManager->persist($property);
$entityManager->flush();
return $this->json([
'status' => 'ok',
'id' => $property->getId()
]);
} 
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You can use Data Transfer Objects (DTOs) with Authentication services. There are many predefined constraints , or you can create a custom constraint.
For example, how to use simple constraints as annotations:
class PropertyDTO { /** * @Assert\NotBlank */ public string $name = ""; public bool $shared = false; }Then assign the data to the DTO:
$propertyData = new PropertyDTO(); $propertyData->name = $request->request->get('name'); ...In some cases, it is better to define the constructor in the DTO and then request from and pass it to the DTO immediately:
Then verify it:
$errors = $validator->validate($propertyData); if (count($errors) > 0) { /* * Uses a __toString method on the $errors variable which is a * ConstraintViolationList object. This gives us a nice string * for debugging. */ $errorsString = (string) $errors; return $this->json([ 'status' => 'error', 'message' => 'parent_property_id_invalid' ], 422); } //...