I have the following form:
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('type', ChoiceType::class, array(
'expanded' => true,
'multiple' => false,
'choices' => array(
'Friend' => 'friend',
'Guide' => 'guide'
)
));
}
How can I make 'Friend' checkbox to be checked by default when the form is rendered ?
I think you should try with data option, but it's just in the case where you don't even have a data saved inside your object, because it will override it else.
Important : It's good for create action, but not for edit action.
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('type', ChoiceType::class, array(
'expanded' => true,
'multiple' => false,
'choices' => array(
'Friend' => 'friend',
'Guide' => 'guide'
),
'data' => 'friend'
));
}
Extract :
When you create a form, each field initially displays the value of the corresponding property of the form's domain object (if an object is bound to the form). If you want to override the initial value for the form or just an individual field, you can set it in the data option
UPDATE If YOU NEED EMPTY VALUE:
As the answer below, replace data with empty_data if you need in any case to update default value
'data' => 'friend'
data not only will it not be safe, but you won't ever be to edit your value :p (expect if you change it dynamically)... As the comment noted above... don't use that ! Use empty_data instead!
Use the empty_data form field option. (not data because it will override any posted data unless you set it dynamically).
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('type', ChoiceType::class, array(
'expanded' => true,
'multiple' => false,
'choices' => array(
'Friend' => 'friend',
'Guide' => 'guide'
),
'empty_data' => 'friend'
));
}
Another option for complex cases is to use Sf Dynamic Form Events.
If you don't want to override value for an edition you can do this :
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
$form = $event->getForm();
$form->add(
'type',
ChoiceType::class,
[
'expanded' => true,
'multiple' => false,
'choices' => [
'Friend' => 'friend',
'Guide' => 'guide'
],
'data' => $event->getData() ?: 'friend'
]);
});
}
empty_value only kicks in when saving the data. To quote the documentation on empty_value: It does not set an initial value if none is provided when the form is rendered in a view.
add() outside the event handler), and it worked well until I wanted to put the field in a form with inherited_data, because “Forms with the inherit_data option set cannot have *_SET_DATA event listeners.” [ doc ]. I think that I’m just going to set the default value in JavaScript as I only need it when new objects are created
An other solution would be to set placeholder as false.
This would set the first value as default and minimize setup effort.
If the field needs to be nullable you could add one more choice i.e. 'empty' => null
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('type', ChoiceType::class, array(
'expanded' => true,
'multiple' => false,
'choices' => array(
'Friend' => 'friend',
'Guide' => 'guide'
),
'placeholder' => false
));
}
I think it would be better to set initial values in the Entity constructor:
public function __construct()
{
$this->exercises = new ArrayCollection();
$this->setTitle("WOCHE#") ;
$this->setYear(date('Y'));
$this->setWeekInCalendar(Week::getCurrentWeekInCalendar());
}
