/**
* @param string $name
* @param string $title
* @param DataObjectInterface $object
* @param string $sort
* @param SS_List $source
* @param string $titleField
*/
public function __construct($name, $title, DataObjectInterface $object, $sort = false, SS_List $source = null, $titleField = 'Title')
{
$this->setSort($sort);
if ($object->many_many($name)) {
$dataSource = $object->{$name}();
// Check if we're dealing with an UnsavedRelationList
$unsaved = $dataSource instanceof UnsavedRelationList;
// Store the relation's class name
$class = $dataSource->dataClass();
$this->dataClass = $class;
// Sort the items
if ($this->getSort()) {
$dataSource = $dataSource->sort($this->getSort());
}
// If we're dealing with an UnsavedRelationList, it'll be empty, so we
// can skip this and just use an array of all available items
if ($unsaved) {
$dataSource = $class::get()->map()->toArray();
} else {
// If we've been given a list source, filter on those IDs only.
if ($source) {
$dataSource = $dataSource->filter('ID', $source->column('ID'));
}
// Start building the data source from scratch. Currently selected items first,
// in the correct sort order
$dataSource = $dataSource->map('ID', $titleField)->toArray();
// Get the other items
$theRest = $class::get();
// Exclude items that we've already found
if (!empty($dataSource)) {
$theRest = $theRest->exclude('ID', array_keys($dataSource));
}
// If we've been given a list source, filter on those IDs only
if ($source) {
$theRest = $theRest->filter('ID', $source->column('ID'));
}
$theRest = $theRest->map('ID', $titleField)->toArray();
// ... we then add the remaining items in whatever order they come
$dataSource = $dataSource + $theRest;
}
} elseif ($source instanceof SS_List) {
$dataSource = $source->map('ID', $titleField)->toArray();
} elseif (is_array($source) && ArrayLib::is_associative($source)) {
$dataSource = $source;
} else {
user_error('MultiSelectField::__construct(): MultiSelectField only supports many-to-many relations');
}
parent::__construct($name, $title, $dataSource, '', null, true);
}
/**
* Remove pages with empty attributes
*
* @param SS_List $list
* @param string $type
* @return SS_List
*/
private function removeEmptyAttributes(SS_List $list, $type)
{
$pageAttributes = $list->map('ID', $type)->toArray();
$emptyAttributess = array_map(function ($value) {
return $value == '';
}, $pageAttributes);
if (!count($emptyAttributess)) {
return $list;
}
return $list->filter(array('ID:not' => array_keys(array_filter($emptyAttributess, function ($value) {
return $value == 1;
}))));
}
public function map($index = 'ID', $titleField = 'Title', $emptyString = null, $sort = false)
{
return $this->list->map($index, $titleField, $emptyString, $sort);
}
