From 5f5077f4fceb69347bfca62e2a7723e45b6a55d0 Mon Sep 17 00:00:00 2001
From: Vincent Chalnot <vchalnot@clever-age.com>
Date: Wed, 11 Jul 2018 11:08:35 +0200
Subject: [PATCH] [Form/Profiler] Massively reducing memory footprint of form
 profiling pages by removing redundant 'form' variable from view variables.

---
 .../Form/Extension/DataCollector/FormDataExtractor.php       | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php b/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php
index 490a4ad711..d907aa2707 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php
@@ -15,6 +15,7 @@ use Symfony\Component\Form\FormInterface;
 use Symfony\Component\Form\FormView;
 use Symfony\Component\HttpKernel\DataCollector\Util\ValueExporter;
 use Symfony\Component\Validator\ConstraintViolationInterface;
+use Symfony\Component\VarDumper\Caster\CutStub;
 
 /**
  * Default implementation of {@link FormDataExtractorInterface}.
@@ -155,6 +156,10 @@ class FormDataExtractor implements FormDataExtractorInterface
         );
 
         foreach ($view->vars as $varName => $value) {
+            // Removing redundant variable from view variables
+            if ('form' === $varName) {
+                $value = new CutStub($value);
+            }
             $data['view_vars'][$varName] = $value;
         }