public function readIssues($force = false)
{
if (!is_array($this->issues) || $force) {
$this->issues = array();
$data = SeminarDB::getIssues($this->id);
foreach ($data as $val) {
unset($issue);
$issue = new Issue();
$issue->fillValuesFromArray($val);
$this->issues[$val['issue_id']] =& $issue;
}
}
}
