How to insert data with foriegn key in symfony 2 API - symfony

Question

curl -v -H "Content-Type: application/json" -d "{\"user\":1,\"userapikey\":\"aaaaaaaaaaaaaaaaaa\",\"title\":\"test tile\"}" http://localhost/us/serenify/web/app_dev.php/userapi/create
I am passing data for creating a apikey record for a specific user.
In above expression user is forign key from user master table.
public function processform(ApiKey $apikey,Request $request)
{
$apiuser = new ApiUser();
$apiform = $this->createForm(new ApiKeyType(), $apikey);
$apiform->submit($request);
if($apiform->isValid())
{
// $page = $apiform->getData();
$content = json_decode($request->getContent());
$apikey->setUserApikey($content->userapikey);
$apikey->setTitle($content->title);
$em = $this->getDoctrine()->getManager();
$em->persist($apikey);
$em->flush();
$data=array(
"success"=>'true',
"msg"=>'Record inserted!'
);
$response = new Response(json_encode($data));
$response->setStatusCode(200);
$response->headers->set('Content-Type', 'application/json');
}
else
{
$out=array(
"success"=>'true',
"msg"=>'invalid form data!'
);
$response = new Response(json_encode($out));
$response->setStatusCode(204);
$response->headers->set('Content-Type', 'application/json');
}
return $response;
}
This is my controller.
class ApiKey
{
/**
* #var User
*
* #ORM\ManyToOne(targetEntity="ApiUser", inversedBy="apikey",cascade={"persist"})
* #ORM\JoinColumn(name="user_id", referencedColumnName="id")
*/
private $user;
/**
* #var integer
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="userapikey", type="string", length=255)
*/
private $userapikey;
/**
* #var string
*
* #ORM\Column(name="title", type="string", length=255)
*/
private $title;
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set apikey
*
* #param string $userapikey
* #return userapi
*/
public function setUserApikey($userapikey)
{
$this->userapikey = $userapikey;
return $this;
}
/**
* Get apikey
*
* #return string
*/
public function getUserApikey()
{
return $this->userapikey;
}
/**
* Set title
*
* #param string $title
* #return userapi
*/
public function setTitle($title)
{
$this->title = $title;
return $this;
}
/**
* Get title
*
* #return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Get user
*
* #return integer
*/
public function getUser()
{
return $this->user;
}
/**
* Set User
*
* #param integer $user
* #return userapi
*/
public function setUser(ApiUser $value = null)
{
$this->user = $value;
return $this;
}
}
And the class ApiUser
class ApiUser
{
/**
* #var ArrayCollection
*
* #ORM\OneToMany(targetEntity="ApiKey", mappedBy="apiuser")
*/
private $apikeys;
/**
* #var integer
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="username", type="string", length=255)
* #Assert\NotBlank()
*/
private $username;
/**
* #var string
* #Assert\NotBlank()
*
* #ORM\Column(name="userpassword", type="string", length=255)
*/
private $userpassword;
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set username
*
* #param string $username
* #return user
*/
public function setUsername($username)
{
$this->username = $username;
return $this;
}
/**
* Get username
*
* #return string
*/
public function getUsername()
{
return $this->username;
}
/**
* Set userpassword
*
* #param string $userpassword
* #return user
*/
public function setUserpassword($userpassword)
{
$this->userpassword = $userpassword;
return $this;
}
/**
* Get userpassword
*
* #return string
*/
public function getUserpassword()
{
return $this->userpassword;
}
}
& this are entity classes.
Please help to insert record, right now NULL value is getting inserted in userid column.

Answer 1

You need a DataTransformer: http://symfony.com/doc/current/cookbook/form/data_transformers.html
class UserToIdTransformer implements DataTransformerInterface
{
/**
* #var ObjectManager
*/
private $om;
/**
* #param ObjectManager $om
*/
public function __construct(ObjectManager $om)
{
$this->om = $om;
}
/**
* Transforms an object (user) to an int (id).
*
* #param User|null $user
* #return integer
*/
public function transform($user)
{
if (null === $user) {
return "";
}
return $user->getId();
}
/**
* Transforms an integer (id) to an object (User).
*
* #param integer $number
*
* #return User|null
*
* #throws TransformationFailedException if object (user) is not found.
*/
public function reverseTransform($id)
{
if (!$id) {
return null;
}
$user = $this->om
->getRepository('YourBundle:User')
->find($id);
if (null === $user) {
throw new TransformationFailedException(sprintf(
'An user with id "%s" does not exist!',
$id
));
}
return $user;
}
}
Then in your formtype, while adding the field:
public function buildForm(FormBuilderInterface $builder, array $options)
{
// ...
// this assumes that the entity manager was passed in as an option
$entityManager = $options['em'];
$transformer = new UserToIdTransformer($entityManager);
// add a normal text field, but add your transformer to it
$builder->add(
$builder->create('user', 'text')
->addModelTransformer($transformer)
);
Note that with a few changes you can get it to work by providing the username rather than the id.