feature symfony#28812 [Form] add a convenience method to get the parent form in Twig templates (xabbuh)

This PR was merged into the 4.3-dev branch. Discussion ---------- [Form] add a convenience method to get the parent form in Twig templates | Q | A | ------------- | --- | Branch? | master | Bug fix? | no | New feature? | yes | BC breaks? | no | Deprecations? | no | Tests pass? | yes | Fixed tickets | symfony#28686 | License | MIT | Doc PR | Commits ------- cb60642 add a convenience method to get the parent form in Twig templates

Author: fabpot

src/Symfony/Bridge/Twig/CHANGELOG.md

@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+4.3.0
+-----
+
+ * added the `parent_form()` function that allows to reliably retrieve the parent form in Twig templates
+
 4.2.0
 -----
 

src/Symfony/Bridge/Twig/Extension/FormExtension.php

@@ -54,6 +54,7 @@ public function getFunctions()
  new TwigFunction('form_start', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
  new TwigFunction('form_end', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
  new TwigFunction('csrf_token', ['Symfony\Component\Form\FormRenderer', 'renderCsrfToken']),
+ new TwigFunction('parent_form', 'Symfony\Bridge\Twig\Extension\twig_get_parent_form'),
  ];
  }
 
@@ -115,3 +116,11 @@ function twig_is_root_form(FormView $formView)
 {
  return null === $formView->parent;
 }
+
+/**
+ * @internal
+ */
+function twig_get_parent_form(FormView $formView): ?FormView
+{
+ return $formView->parent;
+}