getFieldValues() default value instead of null

[rudiedirkx]

Give fields and field types a default value for 'no value submitted'. getFieldValues() returns null or not at all, but that's imperfect sometimes. 0 checkboxes checked should give an empty array, not null.

class FormField {
    protected mixed $nullValue = null;
}

class CollectionType {
    protected mixed $nullValue = [];
}

$this->add('optional_hobbies', 'checkboxes', [
    'null_value' => [],
]);

or something.

[Eloar]

there is default_value option for fields that, in theory, should act as fallback if nothing provided,

[rudiedirkx]

That's not used in getFieldValues(). That's only for building the form, not for getting the values during submission.