/**
* ModelTag constructor can be used in config to set alternate field names as:
* extensions:
* - Modular\Fields\ModelTag('Title', 'ParentID')
*
* @param string $sourceFieldName e.g. 'Title'
* @param string $parentIDFieldName e.g. 'ParentID', if passed then make the tag distinct within children of the ParentID.
* @param string $fallbackFieldName e.g. 'URLSegment', allow another field to be used on parents if they do not have the ModelTag extension
*/
public function __construct($sourceFieldName = 'Title', $parentIDFieldName = '', $fallbackFieldName = '')
{
$this->sourceFieldName = $sourceFieldName;
$this->parentIDFieldName = $parentIDFieldName;
$this->fallbackFieldName = $fallbackFieldName;
parent::__construct();
}
