Skip to content

Add documentation for CallbackChoiceLoader #7218

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

Add documentation for CallbackChoiceLoader #7218

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 13 additions & 0 deletions reference/forms/types/choice.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -184,6 +184,19 @@ The ``choice_loader`` can be used to only partially load the choices in cases wh
a fully-loaded list is not necessary. This is only needed in advanced cases and
would replace the ``choices`` option.

You can use an instance of :class:`Symfony\\Component\\Form\\ChoiceList\\Loader\\CallbackChoiceLoader`
if you want to take advantage of lazy loading::

use Symfony\Component\Form\ChoiceList\Loader\CallbackChoiceLoader;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
// ...

$builder->add('constants', ChoiceType::class, array(
'choice_loader' => new CallbackChoiceLoader(function() {
return StaticClass::getConstants();
},
));

.. include:: /reference/forms/types/options/choice_name.rst.inc

.. include:: /reference/forms/types/options/choice_translation_domain.rst.inc
Expand Down