Use JSON in Symfony controller

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.

• MrYamous: Thx for this answer
• OK sure: @LempereurMatthieu you're welcome... does it help solve your problem?
• MrYamous: It appear to be a good way to resolve my problem yes, but atm i got this error : Fatal error: Class 'GuzzleHttp\Client' not found in C:\wamp64\www\var\...\UserBundle\Controller\RegistrationController.php on line 76 I'm sure about Guzzle is correctly install
• Jason Roman: Did you import the Guzzle Client into your controller class?
• OK sure: @LempereurMatthieu If you're using composer, run the following in your console: composer require guzzlehttp/guzzle

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

• MrYamous: It is possible to send data in a POST request after doing that ?
• Carca: This is only a response from server side, if you want send data programatically to other server just use what @OK-Sure said.