Basic form

class TaskForm extends AbstractType
{
public function buildForm(
FormBuilderInterface $builder,
array $options)
{
$builder
->add('dueDate', DateType::class, array(
'widget' => 'single_text',
'label' => 'Due Date',
'required' => false,
'attr' => array('maxlength' => 10),
'constraints' => array(new Length(
array('max' => 10)))
))
->add('save', SubmitType::class);
}
public function configureOptions(
OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'method' => 'GET',
));
}
}