Form Validation in symfony from ajax call

Question

I need to store data from a form with symfony through an ajax call me not to update the browser. Also I need you in case of errors in the fields can somehow get them in resp

Answer 1

With symfony 3 and the error validator you can parse your Ajax request like this:

 /**
     * Create new student (ajax call)
     * @Method("POST")
     * @Route("/student/create", name"student_create")
     * @param Request $request
     * @return JsonResponse
     */
    public function createAction(Request $request)
    {

        $student = new Student();
        $form = $this->createForm(CreateStudentType::class, $student);
        $form->handleRequest($request);
        $errors = array();

        if ($form->isSubmitted()) {
            $validator = $this->get('validator');
            $errorsValidator = $validator->validate($student);

            foreach ($errorsValidator as $error) {
                array_push($errors, $error->getMessage());
            }


            if (count($errors) == 0) {
                $em = $this->getDoctrine()->getManager();
                $em->persist($student);
                $em->flush();

                return new JsonResponse(array(
                    'code' => 200,
                    'message' => 'student toegevoegd',
                    'errors' => array('errors' => array(''))),
                    200);
            }

        }

        return new JsonResponse(array(
            'code' => 400,
            'message' => 'error',
            'errors' => array('errors' => $errors)),
            400);
    }

And jquery ajax

$("#createForm").submit(function(e) {

        e.preventDefault();
        var formSerialize = $(this).serialize();

        var url = location.origin + '/web/app_dev.php/student/create';
        $.ajax({
            type: "POST",
            url: url,
            data: formSerialize,
            success: function (result) {
                console.log(result);
                if (result.code === 200) {
                    // refresh current url to see student
                } else {

                }
            }
        });
    });