function validation($data, $files) { global $DB; $errors = parent::validation($data, $files); $scuser = new mod_opencast_user(); if ($data['channelnew'] == OPENCAST_CHANNEL_NEW) { if ($scuser->getExternalAccount() == '') { $errors['channelnew'] = get_string('user_notaai', 'opencast'); } if (!$data['newchannelname']) { $errors['newchannelname'] = get_string('required'); } } if ($data['channelnew'] == OPENCAST_CHANNEL_EXISTING) { // make sure we can be external_authority for this channel $scobj = new mod_opencast_series(); $ext_id = isset($data['ext_id']) ? $data['ext_id'] : $this->current->ext_id; $scobj->setExtId($ext_id); $sysaccount_extid = mod_opencast_series::getSysAccountOfUser(); // we must explicitly set $USER as a producer in $scobj or we won't be allowed to add his system_user $scobj->setOrganizationDomain(mod_opencast_series::getOrganizationByEmail($sysaccount_extid)); $scobj->setProducer($scuser->getExternalAccount()); // first, add SysAccount as producer (using $USER account), so we can use SysAccount later to make API calls // $scobj->addProducer($sysaccount_extid, false); $channelid = empty($this->_instance) ? $ext_id : $this->current->id; // if there already is one instance we must refer to it by its Moodle ID otherwise there could // be several records! $thechannel = $scobj->fetch($channelid, !empty($this->_instance), true); } else { if ($data['groupmode'] != NOGROUPS && !$data['is_ivt']) { $errors['groupmode'] = get_string('nogroups_withoutivt', 'opencast'); } } return $errors; }