/**
* {@inheritDoc}
*/
public function __construct($key, array $options = array())
{
// Override parent option
// \DateTime objects are never edited by reference, because
// we treat them like value objects
$this->addOption('by_reference', false);
parent::__construct($key, $options);
}
/**
* Transforms a checkbox/radio button array to a single choice or an array
* of choices.
*
* The input value is an array with the choices as keys and true/false as
* values, depending on whether a given choice is selected. The output
* is an array with the selected choices or a single selected choice.
*
* @param mixed $value An array if "expanded" or "multiple" is set to true,
* a scalar value otherwise.
* @return mixed $value An array if "multiple" is set to true, a scalar
* value otherwise.
*/
protected function reverseTransform($value)
{
if ($this->getOption('expanded')) {
$choices = array();
foreach ($value as $choice => $selected) {
if ($selected) {
$choices[] = $choice;
}
}
if ($this->getOption('multiple')) {
$value = $choices;
} else {
$value = count($choices) > 0 ? current($choices) : null;
}
}
return parent::reverseTransform($value);
}
/**
* Sets the locale of this field.
*
* @see Localizable
*/
public function setLocale($locale)
{
parent::setLocale($locale);
$this->initFormatter();
if ($this->getOption('widget') === self::CHOICE) {
$this->addChoiceFields();
}
}