symfony/form

added a symbol option to the PercentType that allows to disable or customize the output of the percent character

Using the format option of DateType and DateTimeType when the html5 option is enabled is deprecated.

Using names for buttons that do not start with a letter, a digit, or an underscore is deprecated and will lead to an exception in 5.0.

Using names for buttons that do not contain only letters, digits, underscores, hyphens, and colons is deprecated and will lead to an exception in 5.0.

added html5 option to NumberType that allows to render type="number" input fields

deprecated using the date_format, date_widget, and time_widget options of the DateTimeType when the widget option is set to single_text

added block_prefix option to BaseType.

added help_html option to display the help text as HTML.

FormError doesn't implement Serializable anymore

FormDataCollector has been marked as final

added label_translation_parameters, attr_translation_parameters, help_translation_parameters options to FormType to pass translation parameters to form labels, attributes (placeholder and title) and help text respectively. The passed parameters will replace placeholders in translation messages.

class OrderType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('comment', TextType::class, [
            'label' => 'Comment to the order to %company%',
            'label_translation_parameters' => [
                '%company%' => 'Acme',
            ],
            'help' => 'The address of the %company% is %address%',
            'help_translation_parameters' => [
                '%company%' => 'Acme Ltd.',
                '%address%' => '4 Form street, Symfonyville',
            ],
        ])
    }
}

added the input_format option to DateType, DateTimeType, and TimeType to specify the input format when setting the input option to string

dispatch PreSubmitEvent on form.pre_submit

dispatch SubmitEvent on form.submit

dispatch PostSubmitEvent on form.post_submit

dispatch PreSetDataEvent on form.pre_set_data

dispatch PostSetDataEvent on form.post_set_data

added an input option to NumberType

removed default option grouping in TimezoneType, use group_by instead

The getExtendedType() method of the FormTypeExtensionInterface is deprecated and will be removed in 5.0. Type extensions must implement the static getExtendedTypes() method instead and return an iterable of extended types.

Before:

class FooTypeExtension extends AbstractTypeExtension
{
    public function getExtendedType()
    {
        return FormType::class;
    }

    // ...
}

After:

class FooTypeExtension extends AbstractTypeExtension
{
    public static function getExtendedTypes(): iterable
    {
        return [FormType::class];
    }

    // ...
}

deprecated the $scale argument of the IntegerToLocalizedStringTransformer

added Symfony\Component\Form\ClearableErrorsInterface

deprecated calling FormRenderer::searchAndRenderBlock for fields which were already rendered

added a cause when a CSRF error has occurred

deprecated the scale option of the IntegerType

removed restriction on allowed HTTP methods

deprecated the regions option of the TimezoneType