/**
* Create a new date filter.
*
* Only one of the filter bounds may be 0, indicating a no limit in that
* direction.
*
* @param string $field The name of the field that should be filtered.
* @param string $start Start of filter range (or 0 for no start filter)
* @param string $end End of filter range (or 0 for no end filter)
*/
public function __construct($field, $start, $end)
{
parent::__construct($field);
if ($start == 0 && $end == 0) {
throw new midcom_error('Both start and end of a datefilter must not be 0.');
}
$this->_start = $start;
$this->_end = $end;
$this->type = 'datefilter';
}
