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[Form] Ability to clear form errors #5152

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6abe3e4
Documentation on the new clearErrors() method
colinodell Apr 6, 2015
274dd45
Add clearErrors() example to cookbook entry on dynamic form modification
colinodell Apr 6, 2015
a5863fd
Fix link to cookbook article
colinodell Apr 7, 2015
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7 changes: 7 additions & 0 deletions components/form/introduction.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -697,6 +697,13 @@ method to access the list of errors. It returns a
This is useful, for example, if you want to use PHP's ``array_`` function
on the form errors.

Clearing Form Errors
~~~~~~~~~~~~~~~~~~~~

Any errors can be manually cleared using the :method:`Symfony\\Component\\Form\\FormInterface::clearErrors`
method. This is useful when you'd like to validate the form without showing validation errors to the user
(i.e. during a partial AJAX submission or :doc:`dynamic form modification </cookbook/form/dynamic_form_modification>`).

.. _Packagist: https://packagist.org/packages/symfony/form
.. _Twig: http://twig.sensiolabs.org
.. _`Twig Configuration`: http://twig.sensiolabs.org/doc/intro.html
23 changes: 23 additions & 0 deletions cookbook/form/dynamic_form_modification.rst
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Expand Up @@ -731,3 +731,26 @@ all of this, use a listener::

By doing this, you may accidentally disable something more than just form
validation, since the ``POST_SUBMIT`` event may have other listeners.

Clearing Form Errors
~~~~~~~~~~~~~~~~~~~~

Alternatively, if you want to perform validation but not show errors to the user
during the AJAX reload, you could instead clear them before rendering the form::

public function createAction(Request $request)
{
$meetup = new SportMeetup();
$form = $this->createForm(new SportMeetupType(), $meetup);
$form->handleRequest($request);
if ($form->isValid()) {
// ... save the meetup, redirect etc.
}

$form->clearErrors(true);

return $this->render(
'AppBundle:Meetup:create.html.twig',
array('form' => $form->createView())
);
}