/**
* Makes this field to an optional.
*
* @param Field $field The field object
*
* @return Field
*/
public function optional(Field $field)
{
$disp = $field->getDispatcher();
$disp->addListener(Events::BEFORE_TRANSFORM, function (Event $event) {
if (null === $event->getInput()) {
$event->setData(null);
}
});
return $field;
}
/**
* Makes this field to a multiple.
*
* @param Field $field The field object
*
* @return Field
*/
public function multiple(Field $proto)
{
$resizer = new MultipleResizeListener();
$name = $proto->getInternalName();
$disp = new EventDispatcher();
$field = new Field($name, $disp, $proto->getExtensions());
$field->setOption('prototype', $proto);
$disp->addListener(Events::BIND, [$resizer, 'bind']);
$disp->addListener(Events::FILL, [$resizer, 'fill']);
return $field;
}
/**
* Clones a field.
*
* @param Field $field
*
* @return Field The cloned field
*/
protected function cloneField(Field $field)
{
$clone = clone $field;
$clone->setChildren(array_map(function ($child) {
return $this->cloneField($child);
}, $field->getChildren()));
$clone->setConstraints(array_map(function ($constraint) {
return clone $constraint;
}, $field->getConstraints()));
return $clone;
}
/**
* Gets the name for form view.
*
* @param Field $field The field object
* @param boolean $fst This flag is used to find out which field was
* called first.
*
* @return string
*/
public function getName(Field $field, $fst = true)
{
$parent = $field->getParent();
if (null !== $parent && '' !== $parent->getName(false)) {
return $parent->getName(false) . '[' . $field->getInternalName() . ']';
}
if ($fst && $field->hasOption('prototype')) {
return $field->getInternalName() . '[]';
}
return $field->getInternalName();
}
/**
* Adds a constraint to the field.
*
* @param Field $field The field object
* @param string $message The error message
* @param callable $check The check method
*
* @return Field
*/
public function verifying(Field $field, $message, callable $func)
{
$field->addConstraint(new \Formz\Constraint\Callback($message, $func));
return $field;
}
/**
* Checks if the field value is boolean.
*
* @param Field $field The form field
* @param string message The error message
*
* @return Field
*/
public function boolean(Field $field, $message = 'formz.error.boolean')
{
$field->addConstraint(new \Formz\Constraint\Boolean($message));
$field->transform(new \Formz\Transformer\Boolean());
return $field;
}
/**
* Allows to bind the form with Symfony's request object.
*
* @param Field $field The form field
* @param Request $request The symfony request object
*
* @return Field
*/
public function bindFromRequest(Field $field, Request $request)
{
$field->bind($request->request->all());
return $field;
}
/**
* Adds a child field.
*
* @param Field $field The field obejct
*/
public function addChild(Field $child)
{
$this->children[$child->getInternalName()] = $child;
}