/**
* Filter recurrence / exclusion rule or dates. Avoid throwing exception for old, malformed values.
*
* @param string $rule Rule or dates value.
*
* @return string Fixed rule or dates value.
*/
protected function _filter_rule($rule)
{
if (null === $this->_rule_filter) {
$this->_rule_filter = $this->_registry->get('recurrence.rule');
}
return $this->_rule_filter->filter_rule($rule);
}
/**
* Get the html for the exclude dates and exception rules.
*
* @param Ai1ec_Event $event
* @param Ai1ec_Recurrence_Rule $rrule
* @return string
*/
public function get_exclude_html(Ai1ec_Event $event, Ai1ec_Recurrence_Rule $rrule)
{
$excludes = array();
$exception_rules = $event->get('exception_rules');
$exception_dates = $event->get('exception_dates');
if ($exception_rules) {
$excludes[] = $rrule->rrule_to_text($exception_rules);
}
if ($exception_dates && 0 !== strpos($exception_rules, 'EXDATE')) {
$excludes[] = $rrule->exdate_to_text($exception_dates);
}
return implode(Ai1ec_I18n::__(', and '), $excludes);
}
