/**
* Creates a new simple choice list.
*
* @param array $choices The array of choices with the choices as keys and
* the labels as values. Choices may also be given
* as hierarchy of unlimited depth. Hierarchies are
* created by creating nested arrays. The title of
* the sub-hierarchy is stored in the array
* key pointing to the nested array.
* @param array $preferredChoices A flat array of choices that should be
* presented to the user with priority.
*/
public function __construct(array $choices, array $preferredChoices = array())
{
// Flip preferred choices to speed up lookup
parent::__construct($choices, $choices, array_flip($preferredChoices));
}
/**
* Creates a new unique value for this choice.
*
* If a property path for the value was given at object creation,
* the getter behind that path is now called to obtain a new value.
* Otherwise a new integer is generated.
*
* @param mixed $choice The choice to create a value for
*
* @return int|string A unique value without character limitations.
*/
protected function createValue($choice)
{
if ($this->valuePath) {
return (string) $this->propertyAccessor->getValue($choice, $this->valuePath);
}
return parent::createValue($choice);
}
/**
* Creates a new unique value for this choice.
*
* If a property path for the value was given at object creation,
* the getter behind that path is now called to obtain a new value.
*
* Otherwise a new integer is generated.
*
* @param mixed $choice The choice to create a value for
* @return integer|string A unique value without character limitations.
*/
protected function createValue($choice)
{
if ($this->valuePath) {
return (string) $this->valuePath->getValue($choice);
}
return parent::createValue($choice);
}
public function __construct(array $options = array(), array $preferredChoices = array())
{
$choices = $this->all();
$labels = $choices;
parent::__construct($choices, $labels, $preferredChoices);
}
/**
* Creates a new simple choice list.
*
* @param array $choices The array of choices with the choices as keys and
* the labels as values. Choices may also be given
* as hierarchy of unlimited depth. Hierarchies are
* created by creating nested arrays. The title of
* the sub-hierarchy is stored in the array
* key pointing to the nested array.
* @param array $preferredChoices A flat array of choices that should be
* presented to the user with priority.
* @param integer $valueStrategy The strategy used to create choice values.
* One of COPY_CHOICE and GENERATE.
* @param integer $indexStrategy The strategy used to create choice indices.
* One of COPY_CHOICE and GENERATE.
*/
public function __construct(array $choices, array $preferredChoices = array(), $valueStrategy = self::COPY_CHOICE, $indexStrategy = self::GENERATE)
{
// Flip preferred choices to speed up lookup
parent::__construct($choices, $choices, array_flip($preferredChoices), $valueStrategy, $indexStrategy);
}
/**
* Initializes the list with choices.
*
* Safe to be called multiple times. The list is cleared on every call.
*
* @param array|\Traversable $choices The choices to write into the list.
* @param array $labels Ignored.
* @param array $preferredChoices The choices to display with priority.
*/
protected function initialize($choices, array $labels, array $preferredChoices)
{
if (!is_array($choices) && !$choices instanceof \Traversable) {
throw new UnexpectedTypeException($choices, 'array or \\Traversable');
}
if (null !== $this->groupPath) {
$groupedChoices = array();
foreach ($choices as $i => $choice) {
if (is_array($choice)) {
throw new \InvalidArgumentException('You should pass a plain object array (without groups, $code, $previous) when using the "groupPath" option');
}
try {
$group = $this->groupPath->getValue($choice);
} catch (InvalidPropertyException $e) {
// Don't group items whose group property does not exist
// see https://github.com/symfony/symfony/commit/d9b7abb7c7a0f28e0ce970afc5e305dce5dccddf
$group = null;
}
if (null === $group) {
$groupedChoices[$i] = $choice;
} else {
if (!isset($groupedChoices[$group])) {
$groupedChoices[$group] = array();
}
$groupedChoices[$group][$i] = $choice;
}
}
$choices = $groupedChoices;
}
$labels = array();
$this->extractLabels($choices, $labels);
parent::initialize($choices, $labels, $preferredChoices);
}
