Use JSON in Symfony controller - json

Question

I'm looking for a way to execute a little bit of JSON from my Symfony (2.6 btw) controller, moreover than an other action (post data into database)
In fact, there is an register page with a controller which put data into database and then, redirect user to another page. But i need that my controller execute too a little bit of JSON to use Mailchimp API.
I've found a lot of docs about how to render JSON response, but, it seems to me that it's not what i want to be.
There is my controller
public function registerAction(Request $request)
{
/** #var $formFactory \FOS\UserBundle\Form\Factory\FactoryInterface */
$formFactory = $this->get('fos_user.registration.form.factory');
/** #var $userManager \FOS\UserBundle\Model\UserManagerInterface */
$userManager = $this->get('fos_user.user_manager');
/** #var $dispatcher \Symfony\Component\EventDispatcher\EventDispatcherInterface */
$dispatcher = $this->get('event_dispatcher');
$user = $userManager->createUser();
$user->setEnabled(true);
$event = new GetResponseUserEvent($user, $request);
$dispatcher->dispatch(FOSUserEvents::REGISTRATION_INITIALIZE, $event);
if (null !== $event->getResponse()) {
return $event->getResponse();
}
$form = $formFactory->createForm();
$form->setData($user);
$form->handleRequest($request);
if ($form->isValid()) {
// Gestion du type d'utilisateur et ajout du role
$user_type = $form->get('user_profile')->get('type')->getData();
$new_role = $this->roles[$user_type];
$event = new FormEvent($form, $request);
$user = $event->getForm()->getData();
$user->addRole($new_role);
$user->getUserProfile()->setEmail($user->getEmail());
$dispatcher->dispatch(FOSUserEvents::REGISTRATION_SUCCESS, $event);
$userManager->updateUser($user);
if (null === $response = $event->getResponse()) {
$url = $this->generateUrl('fos_user_registration_confirmed');
$response = new RedirectResponse($url);
}
$dispatcher->dispatch(FOSUserEvents::REGISTRATION_COMPLETED, new FilterUserResponseEvent($user, $request, $response));
return $response;
}
return $this->render('FOSUserBundle:Registration:register.html.twig', array(
'form' => $form->createView(),
));
}
There is my JSON request
{
"email_address": "$email",
"status": "subscribed",
"merge_fields": {
"FNAME": "$name",
"LNAME": "$lastname",
"DATE": "$date"
}
}
So, how can i do to execute this JSON with this controller ?
Thank you in advance for your help (and sorry for my excellent english)

Answer 1

You probably want to create the JSON from an array rather than try to pass variables. Try:
$data = [
'email_address' => $email,
'status' => 'subscribed',
'merge_fields' => [
'FNAME' => $name,
'LNAME' => $lastname,
'DATE' => $date,
],
];
$json = json_encode($data);
Then I'm assuming this data gets sent to MailChimp in a POST request? If so, you could use Guzzle to send the data to MailChimp:
First add the guzzle dependency in composer by running:
composer require guzzlehttp/guzzle
Then send the data:
$client = new \GuzzleHttp\Client();
$response = $client->request('POST', 'https://MAILCHIMP_URL', ['body' => $data]);
To send JSON instead of raw data, do the following:
$client = new \GuzzleHttp\Client();
$response = $client->request('POST', 'https://MAILCHIMP_URL', ['json' => $data]);
Depending on the response status, you can then handle the logic afterwards.

Answer 2

You can achieve this also using JsonResponse (Symfony\Component\HttpFoundation\JsonResponse)
use Symfony\Component\HttpFoundation\JsonResponse;
...
// if you know the data to send when creating the response
$data = [
'email_address' => $email,
'status' => 'subscribed',
'merge_fields' => [
'FNAME' => $name,
'LNAME' => $lastname,
'DATE' => $date,
]
];
$response = new JsonResponse($data);
return $response;
More details here https://symfony.com/doc/current/components/http_foundation.html