Symfony version(s) affected

6.4.* / 7.*

Description

When a ChoiceType field with 'expanded' => true is submitted, all children are considered valid even if a selected value is invalid. Only the parent is considered invalid ('valid' => false in the form view data).

How to reproduce

Create a form with the following field:

->add('choice_checkbox', ChoiceType::class, [
    'choices' => [
        'Foo' => 'foo',
        'Bar' => 'bar',
        'Baz' => 'baz',
    ],
    'expanded' => true,
    'multiple' => true,
    'constraints' => new Assert\EqualTo('baz'),
])

Then select foo and/or bar and submit the form.

• Parent field is invalid ('valid' => false)
• Children are valid ('valid' => true) whereas foo and bar should be invalid ('valid' => false)

reproducer

Possible Solution

No response

Additional Context

No response