/**
* Marks a tokens as completed and sends a confirmation email to the participiant.
* If $quotaexit is set to true then the user exited the survey due to a quota
* restriction and the according token is only marked as 'Q'
*
* @param mixed $quotaexit
*/
function submittokens($quotaexit = false)
{
$surveyid = Yii::app()->getConfig('surveyID');
if (isset($_SESSION['survey_' . $surveyid]['s_lang'])) {
$thissurvey = getSurveyInfo($surveyid, $_SESSION['survey_' . $surveyid]['s_lang']);
} else {
$thissurvey = getSurveyInfo($surveyid);
}
$clienttoken = $_SESSION['survey_' . $surveyid]['thistoken']['token'];
$clang = Yii::app()->lang;
$sitename = Yii::app()->getConfig("sitename");
$emailcharset = Yii::app()->getConfig("emailcharset");
// Shift the date due to global timeadjust setting
$today = dateShift(date("Y-m-d H:i:s"), "Y-m-d H:i", Yii::app()->getConfig("timeadjust"));
// check how many uses the token has left
$oTokenInformation = Tokens_dynamic::model($surveyid)->findByAttributes(array('token' => $clienttoken));
if ($oTokenInformation) {
$usesleft = $oTokenInformation->usesleft;
$participant_id = isset($oTokenInformation->participant_id) ? $oTokenInformation->participant_id : '';
}
if ($quotaexit == true) {
$oTokenInformation->completed = 'Q';
$oTokenInformation->usesleft = $oTokenInformation->usesleft - 1;
} else {
if (isset($usesleft) && $usesleft <= 1) {
// Finish the token
if (isTokenCompletedDatestamped($thissurvey)) {
$oTokenInformation->completed = $today;
} else {
$oTokenInformation->completed = 'Y';
}
if (!empty($participant_id)) {
$slquery = Survey_links::model()->find('participant_id = :pid AND survey_id = :sid AND token_id = :tid', array(':pid' => $participant_id, ':sid' => $surveyid, ':tid' => $oTokenInformation->tid));
if (isTokenCompletedDatestamped($thissurvey)) {
$slquery->date_completed = $today;
} else {
// Update the survey_links table if necessary, to protect anonymity, use the date_created field date
$slquery->date_completed = $slquery->date_created;
}
$slquery->save();
}
}
$oTokenInformation->usesleft = $oTokenInformation->usesleft - 1;
}
$oTokenInformation->save();
if ($quotaexit == false) {
if ($oTokenInformation && trim(strip_tags($thissurvey['email_confirm'])) != "" && $thissurvey['sendconfirmation'] == "Y") {
if ($oTokenInformation->completed == "Y" || $oTokenInformation->completed == $today) {
$from = "{$thissurvey['adminname']} <{$thissurvey['adminemail']}>";
$to = $oTokenInformation->email;
$subject = $thissurvey['email_confirm_subj'];
$aReplacementVars = array();
$aReplacementVars["ADMINNAME"] = $thissurvey['admin'];
$aReplacementVars["ADMINEMAIL"] = $thissurvey['adminemail'];
$aReplacementVars['ADMINEMAIL'] = $thissurvey['adminemail'];
//Fill with token info, because user can have his information with anonimity control
$aReplacementVars["FIRSTNAME"] = $oTokenInformation->firstname;
$aReplacementVars["LASTNAME"] = $oTokenInformation->lastname;
$aReplacementVars["TOKEN"] = $clienttoken;
// added survey url in replacement vars
$surveylink = Yii::app()->createAbsoluteUrl("/survey/index/sid/{$surveyid}", array('lang' => $_SESSION['survey_' . $surveyid]['s_lang'], 'token' => $clienttoken));
$aReplacementVars['SURVEYURL'] = $surveylink;
$attrfieldnames = getAttributeFieldNames($surveyid);
foreach ($attrfieldnames as $attr_name) {
$aReplacementVars[strtoupper($attr_name)] = $oTokenInformation->{$attr_name};
}
$dateformatdatat = getDateFormatData($thissurvey['surveyls_dateformat']);
$numberformatdatat = getRadixPointData($thissurvey['surveyls_numberformat']);
$redata = array('thissurvey' => $thissurvey);
$subject = templatereplace($subject, $aReplacementVars, $redata);
$subject = html_entity_decode($subject, ENT_QUOTES, $emailcharset);
if (getEmailFormat($surveyid) == 'html') {
$ishtml = true;
} else {
$ishtml = false;
}
$message = $thissurvey['email_confirm'];
//$message=ReplaceFields($message, $fieldsarray, true);
$message = templatereplace($message, $aReplacementVars, $redata);
if (!$ishtml) {
$message = strip_tags(breakToNewline(html_entity_decode($message, ENT_QUOTES, $emailcharset)));
} else {
$message = html_entity_decode($message, ENT_QUOTES, $emailcharset);
}
//Only send confirmation email if there is a valid email address
if (validateEmailAddress($to)) {
SendEmailMessage($message, $subject, $to, $from, $sitename, $ishtml);
}
} else {
// Leave it to send optional confirmation at closed token
}
}
}
}
function deleteParticipantTokenAnswer($rows)
{
/* This function deletes the participant from the participants table,
the participant from any tokens table they're in (using the survey_links table to find them),
all responses in surveys they've been linked to,
and then all the participants attributes. */
$rowid = explode(",", $rows);
foreach ($rowid as $row) {
//ORIGINAL LINE: $tokens = Yii::app()->db->createCommand()->select('*')->from('{{survey_links}}')->where('participant_id = "' . $row . '"')->queryAll();
$tokens = Yii::app()->db->createCommand()->select('*')->from('{{survey_links}}')->where('participant_id = :row')->bindParam(":row", $row, PDO::PARAM_INT)->queryAll();
foreach ($tokens as $key => $value) {
$tokentable = '{{tokens_' . intval($value['survey_id']) . '}}';
if (Yii::app()->db->schema->getTable($tokentable)) {
$tokenid = Yii::app()->db->createCommand()->select('token')->from('{{tokens_' . intval($value['survey_id']) . '}}')->where('participant_id = "' . $value['participant_id'] . '"')->queryAll();
$token = $tokenid[0];
$surveytable = '{{survey_' . intval($value['survey_id']) . '}}';
if ($datas = Yii::app()->db->schema->getTable($surveytable)) {
if (!empty($token['token']) && isset($datas->columns['token'])) {
$gettoken = Yii::app()->db->createCommand()->select('*')->from('{{survey_' . intval($value['survey_id']) . '}}')->where('token = :token')->bindParam(":token", $token['token'], PDO::PARAM_STR)->queryAll();
$gettoken = $gettoken[0];
Yii::app()->db->createCommand()->delete('{{survey_' . intval($value['survey_id']) . '}}', 'token = :token')->bindParam(":token", $gettoken['token'], PDO::PARAM_STR);
// Deletes matching responses from surveys
}
}
Yii::app()->db->createCommand()->delete('{{tokens_' . intval($value['survey_id']) . '}}', 'participant_id = "' . $value['participant_id'] . '"');
// Deletes matching token table entries
}
}
Yii::app()->db->createCommand()->delete(Participants::model()->tableName(), array('in', 'participant_id', $row));
Yii::app()->db->createCommand()->delete(Survey_links::model()->tableName(), array('in', 'participant_id', $row));
Yii::app()->db->createCommand()->delete(Participant_attribute::model()->tableName(), array('in', 'participant_id', $row));
}
}
/**
* Receives an ajax call containing the participant id in the fourth segment of the url
* Supplies list of survey links - surveys of which this participant is on the tokens table
* URL: [localurl]/limesurvey/admin/participants/getSurveyInfo_json/pid/[participant_id]
* RETURNS: json data containing linked survey information (Survey name, survey id, token_id and date_added)
*/
function getSurveyInfo_json()
{
$participantid = Yii::app()->request->getQuery('pid');
$records = Survey_links::model()->findAllByAttributes(array('participant_id' => $participantid));
$aData = new stdClass();
$aData->page = 1;
$aData->records = count($records);
$aData->total = ceil($aData->records / 10);
$i = 0;
foreach ($records as $row) {
$oSurvey = Survey::model()->with(array('languagesettings' => array('condition' => 'surveyls_language=language')))->findByAttributes(array('sid' => $row['survey_id']));
foreach ($oSurvey->languagesettings as $oLanguageSetting) {
$surveyname = $oLanguageSetting->surveyls_title;
}
$surveylink = "";
/* Check permissions of each survey before creating a link*/
if (!hasSurveyPermission($row['survey_id'], 'tokens', 'read')) {
$surveylink = $row['survey_id'];
} else {
$surveylink = '<a href=' . Yii::app()->getController()->createUrl("/admin/tokens/sa/browse/surveyid/{$row['survey_id']}") . '>' . $row['survey_id'] . '</a>';
}
$aData->rows[$i]['cell'] = array($surveyname, $surveylink, $row['token_id'], $row['date_created'], $row['date_invited'], $row['date_completed']);
$i++;
}
echo ls_json_encode($aData);
}
/**
* Function responsible to deactivate a survey.
*
* @access public
* @param int $iSurveyID
* @return void
*/
public function deactivate($iSurveyID = null)
{
$iSurveyID = Yii::app()->request->getPost('sid', $iSurveyID);
$iSurveyID = sanitize_int($iSurveyID);
$clang = $this->getController()->lang;
$date = date('YmdHis');
//'His' adds 24hours+minutes to name to allow multiple deactiviations in a day
if (empty($_POST['ok'])) {
$aData['surveyid'] = $iSurveyID;
$aData['date'] = $date;
$aData['dbprefix'] = Yii::app()->db->tablePrefix;
$aData['step1'] = true;
} else {
//See if there is a tokens table for this survey
if (tableExists("{{tokens_{$iSurveyID}}}")) {
if (Yii::app()->db->getDriverName() == 'postgre') {
$deactivateresult = Yii::app()->db->createCommand()->renameTable($toldtable . '_tid_seq', $tnewtable . '_tid_seq');
$setsequence = "ALTER TABLE " . Yii::app()->db->quoteTableName($tnewtable) . " ALTER COLUMN tid SET DEFAULT nextval('{{{$tnewtable}}}_tid_seq'::regclass);";
$deactivateresult = Yii::app()->db->createCommand($setsequence)->query();
$setidx = "ALTER INDEX {{{$toldtable}}}_idx RENAME TO {{{$tnewtable}}}_idx;";
$deactivateresult = Yii::app()->db->createCommand($setidx)->query();
}
$toldtable = "{{tokens_{$iSurveyID}}}";
$tnewtable = "{{old_tokens_{$iSurveyID}_{$date}}}";
$tdeactivateresult = Yii::app()->db->createCommand()->renameTable($toldtable, $tnewtable);
$aData['tnewtable'] = $tnewtable;
$aData['toldtable'] = $toldtable;
}
//Remove any survey_links to the CPDB
Survey_links::model()->deleteLinksBySurvey($iSurveyID);
// IF there are any records in the saved_control table related to this survey, they have to be deleted
$result = Saved_control::model()->deleteSomeRecords(array('sid' => $iSurveyID));
//Yii::app()->db->createCommand($query)->query();
$sOldSurveyTableName = Yii::app()->db->tablePrefix . "survey_{$iSurveyID}";
$sNewSurveyTableName = Yii::app()->db->tablePrefix . "old_survey_{$iSurveyID}_{$date}";
$aData['sNewSurveyTableName'] = $sNewSurveyTableName;
//Update the auto_increment value from the table before renaming
$new_autonumber_start = 0;
$query = "SELECT id FROM " . Yii::app()->db->quoteTableName($sOldSurveyTableName) . " ORDER BY id desc";
$result = Yii::app()->db->createCommand($query)->limit(1)->query();
foreach ($result->readAll() as $row) {
if (strlen($row['id']) > 12) {
$part1 = substr($row['id'], 0, 12);
$part2len = strlen($row['id']) - 12;
$part2 = sprintf("%0{$part2len}d", substr($row['id'], 12, strlen($row['id']) - 12) + 1);
$new_autonumber_start = "{$part1}{$part2}";
} else {
$new_autonumber_start = $row['id'] + 1;
}
}
$condn = array('sid' => $iSurveyID);
$insertdata = array('autonumber_start' => $new_autonumber_start);
$survey = Survey::model()->findByAttributes($condn);
$survey->autonumber_start = $new_autonumber_start;
$survey->save();
if (Yii::app()->db->getDrivername() == 'postgre') {
$deactivateresult = Yii::app()->db->createCommand()->renameTable($sOldSurveyTableName . '_id_seq', $sNewSurveyTableName . '_id_seq');
$setsequence = "ALTER TABLE {$newtable} ALTER COLUMN id SET DEFAULT nextval('{$sNewSurveyTableName}_id_seq'::regclass);";
$deactivateresult = Yii::app()->db->createCommand($setsequence)->execute();
}
$deactivateresult = Yii::app()->db->createCommand()->renameTable($sOldSurveyTableName, $sNewSurveyTableName);
$insertdata = array('active' => 'N');
$survey->active = 'N';
$survey->save();
$prow = Survey::model()->find('sid = :sid', array(':sid' => $iSurveyID));
if ($prow->savetimings == "Y") {
$sOldTimingsTableName = Yii::app()->db->tablePrefix . "survey_{$iSurveyID}_timings";
$sNewTimingsTableName = Yii::app()->db->tablePrefix . "old_survey_{$iSurveyID}_timings_{$date}";
$deactivateresult2 = Yii::app()->db->createCommand()->renameTable($sOldTimingsTableName, $sNewTimingsTableName);
$deactivateresult = $deactivateresult && $deactivateresult2;
$aData['sNewTimingsTableName'] = $sNewTimingsTableName;
}
$aData['surveyid'] = $iSurveyID;
}
$this->_renderWrappedTemplate('survey', 'deactivateSurvey_view', $aData);
}
/**
* Marks a tokens as completed and sends a confirmation email to the participiant.
* If $quotaexit is set to true then the user exited the survey due to a quota
* restriction and the according token is only marked as 'Q'
*
* @param mixed $quotaexit
*/
function submittokens($quotaexit = false)
{
global $thissurvey;
global $surveyid;
global $clienttoken;
$clang = Yii::app()->lang;
$sitename = Yii::app()->getConfig("sitename");
$emailcharset = Yii::app()->getConfig("emailcharset");
// Shift the date due to global timeadjust setting
$today = dateShift(date("Y-m-d H:i:s"), "Y-m-d H:i", Yii::app()->getConfig("timeadjust"));
// check how many uses the token has left
$usesquery = "SELECT usesleft, participant_id, tid FROM {{tokens_{$surveyid}}} WHERE token='" . $clienttoken . "'";
$usesresult = dbExecuteAssoc($usesquery);
$usesrow = $usesresult->read();
if (isset($usesrow)) {
$usesleft = $usesrow['usesleft'];
$participant_id = $usesrow['participant_id'];
$token_id = $usesrow['tid'];
}
$utquery = "UPDATE {{tokens_{$surveyid}}}\n";
if ($quotaexit == true) {
$utquery .= "SET completed='Q', usesleft=usesleft-1\n";
} elseif (isTokenCompletedDatestamped($thissurvey)) {
if (isset($usesleft) && $usesleft <= 1) {
$utquery .= "SET usesleft=usesleft-1, completed='{$today}'\n";
if (!empty($participant_id)) {
//Update the survey_links table if necessary
$slquery = Survey_links::model()->find('participant_id = "' . $participant_id . '" AND survey_id = ' . $surveyid . ' AND token_id = ' . $token_id);
$slquery->date_completed = $today;
$slquery->save();
}
} else {
$utquery .= "SET usesleft=usesleft-1\n";
}
} else {
if (isset($usesleft) && $usesleft <= 1) {
$utquery .= "SET usesleft=usesleft-1, completed='Y'\n";
if (!empty($participant_id)) {
//Update the survey_links table if necessary, to protect anonymity, use the date_created field date
$slquery = Survey_links::model()->find('participant_id = "' . $participant_id . '" AND survey_id = ' . $surveyid . ' AND token_id = ' . $token_id);
$slquery->date_completed = $slquery->date_created;
$slquery->save();
}
} else {
$utquery .= "SET usesleft=usesleft-1\n";
}
}
$utquery .= "WHERE token='" . $clienttoken . "'";
$utresult = dbExecuteAssoc($utquery) or safeDie("Couldn't update tokens table!<br />\n{$utquery}<br />\n");
//Checked
if ($quotaexit == false) {
// TLR change to put date into sent and completed
$cnfquery = "SELECT * FROM {{tokens_{$surveyid}}} WHERE token='" . $clienttoken . "' AND completed!='N' AND completed!=''";
$cnfresult = dbExecuteAssoc($cnfquery);
//Checked
$cnfrow = $cnfresult->read();
if (isset($cnfrow)) {
$from = "{$thissurvey['adminname']} <{$thissurvey['adminemail']}>";
$to = $cnfrow['email'];
$subject = $thissurvey['email_confirm_subj'];
$fieldsarray["{ADMINNAME}"] = $thissurvey['adminname'];
$fieldsarray["{ADMINEMAIL}"] = $thissurvey['adminemail'];
$fieldsarray["{SURVEYNAME}"] = $thissurvey['name'];
$fieldsarray["{SURVEYDESCRIPTION}"] = $thissurvey['description'];
$fieldsarray["{FIRSTNAME}"] = $cnfrow['firstname'];
$fieldsarray["{LASTNAME}"] = $cnfrow['lastname'];
$fieldsarray["{TOKEN}"] = $clienttoken;
$attrfieldnames = getAttributeFieldNames($surveyid);
foreach ($attrfieldnames as $attr_name) {
$fieldsarray["{" . strtoupper($attr_name) . "}"] = $cnfrow[$attr_name];
}
$dateformatdatat = getDateFormatData($thissurvey['surveyls_dateformat']);
$numberformatdatat = getRadixPointData($thissurvey['surveyls_numberformat']);
$fieldsarray["{EXPIRY}"] = convertDateTimeFormat($thissurvey["expiry"], 'Y-m-d H:i:s', $dateformatdatat['phpdate']);
$subject = ReplaceFields($subject, $fieldsarray, true);
$subject = html_entity_decode($subject, ENT_QUOTES, $emailcharset);
if (getEmailFormat($surveyid) == 'html') {
$ishtml = true;
} else {
$ishtml = false;
}
if (trim(strip_tags($thissurvey['email_confirm'])) != "" && $thissurvey['sendconfirmation'] == "Y") {
$message = $thissurvey['email_confirm'];
$message = ReplaceFields($message, $fieldsarray, true);
if (!$ishtml) {
$message = strip_tags(breakToNewline(html_entity_decode($message, ENT_QUOTES, $emailcharset)));
} else {
$message = html_entity_decode($message, ENT_QUOTES, $emailcharset);
}
//Only send confirmation email if there is a valid email address
if (validateEmailAddress($cnfrow['email'])) {
SendEmailMessage($message, $subject, $to, $from, $sitename, $ishtml);
}
} else {
//There is nothing in the message or "Send confirmation emails" is set to "No" , so don't send a confirmation email
//This section only here as placeholder to indicate new feature :-)
}
}
}
}
/**
* Show dialogs and create a new tokens table
*/
function _newtokentable($iSurveyId)
{
$clang = $this->getController()->lang;
Yii::import('application.helpers.admin.token_helper', true);
if (Yii::app()->request->getPost('createtable') == "Y" && hasSurveyPermission($iSurveyId, 'surveyactivation', 'update')) {
createTokenTable($iSurveyId);
$this->_renderWrappedTemplate('token', array('message' => array('title' => $clang->gT("Token control"), 'message' => $clang->gT("A token table has been created for this survey.") . " (\"" . Yii::app()->db->tablePrefix . "tokens_{$iSurveyId}\")<br /><br />\n" . "<input type='submit' value='" . $clang->gT("Continue") . "' onclick=\"window.open('" . $this->getController()->createUrl("admin/tokens/index/surveyid/{$iSurveyId}") . "', '_top')\" />\n")));
} elseif (returnGlobal('restoretable') == "Y" && Yii::app()->request->getPost('oldtable') && hasSurveyPermission($iSurveyId, 'surveyactivation', 'update')) {
//Rebuild attributedescription value for the surveys table
$table = Yii::app()->db->schema->getTable(Yii::app()->request->getPost('oldtable'));
$fields = array_filter(array_keys($table->columns), 'filterForAttributes');
foreach ($fields as $fieldname) {
$name = $fieldname;
if ($fieldname[10] == 'c') {
//This belongs to a cpdb attribute
$cpdbattid = substr($fieldname, 15);
$data = ParticipantAttributeNames::model()->getAttributeName($cpdbattid, Yii::app()->session['adminlang']);
$name = $data['attribute_name'];
}
$fieldcontents[$fieldname] = array('description' => $name, 'mandatory' => 'N', 'show_register' => 'N');
}
Survey::model()->updateByPk($iSurveyId, array('attributedescriptions' => serialize($fieldcontents)));
Yii::app()->db->createCommand()->renameTable(Yii::app()->request->getPost('oldtable'), Yii::app()->db->tablePrefix . "tokens_" . intval($iSurveyId));
//Add any survey_links from the renamed table
Survey_links::model()->rebuildLinksFromTokenTable($iSurveyId);
$this->_renderWrappedTemplate('token', array('message' => array('title' => $clang->gT("Import old tokens"), 'message' => $clang->gT("A token table has been created for this survey and the old tokens were imported.") . " (\"" . Yii::app()->db->tablePrefix . "tokens_{$iSurveyId}" . "\")<br /><br />\n" . "<input type='submit' value='" . $clang->gT("Continue") . "' onclick=\"window.open('" . $this->getController()->createUrl("admin/tokens/index/surveyid/{$iSurveyId}") . "', '_top')\" />\n")));
LimeExpressionManager::SetDirtyFlag();
// so that knows that token tables have changed
} else {
$this->getController()->loadHelper('database');
$result = Yii::app()->db->createCommand(dbSelectTablesLike("{{old_tokens_" . intval($iSurveyId) . "_%}}"))->queryAll();
$tcount = count($result);
if ($tcount > 0) {
foreach ($result as $rows) {
$oldlist[] = reset($rows);
}
$aData['oldlist'] = $oldlist;
}
$thissurvey = getSurveyInfo($iSurveyId);
$aData['thissurvey'] = $thissurvey;
$aData['surveyid'] = $iSurveyId;
$aData['tcount'] = $tcount;
$aData['databasetype'] = Yii::app()->db->getDriverName();
$this->_renderWrappedTemplate('token', 'tokenwarning', $aData);
}
}
/**
* Deletes a survey and all its data
*
* @access public
* @param int $iSurveyID
* @param bool @recursive
* @return void
*/
public function deleteSurvey($iSurveyID, $recursive = true)
{
Survey::model()->deleteByPk($iSurveyID);
if ($recursive == true) {
if (tableExists("{{survey_" . intval($iSurveyID) . "}}")) {
Yii::app()->db->createCommand()->dropTable("{{survey_" . intval($iSurveyID) . "}}");
}
if (tableExists("{{survey_" . intval($iSurveyID) . "_timings}}")) {
Yii::app()->db->createCommand()->dropTable("{{survey_" . intval($iSurveyID) . "_timings}}");
}
if (tableExists("{{tokens_" . intval($iSurveyID) . "}}")) {
Yii::app()->db->createCommand()->dropTable("{{tokens_" . intval($iSurveyID) . "}}");
}
$oResult = Questions::model()->findAllByAttributes(array('sid' => $iSurveyID));
foreach ($oResult as $aRow) {
Answers::model()->deleteAllByAttributes(array('qid' => $aRow['qid']));
Conditions::model()->deleteAllByAttributes(array('qid' => $aRow['qid']));
Question_attributes::model()->deleteAllByAttributes(array('qid' => $aRow['qid']));
Defaultvalues::model()->deleteAllByAttributes(array('qid' => $aRow['qid']));
}
Questions::model()->deleteAllByAttributes(array('sid' => $iSurveyID));
Assessment::model()->deleteAllByAttributes(array('sid' => $iSurveyID));
Groups::model()->deleteAllByAttributes(array('sid' => $iSurveyID));
Surveys_languagesettings::model()->deleteAllByAttributes(array('surveyls_survey_id' => $iSurveyID));
Survey_permissions::model()->deleteAllByAttributes(array('sid' => $iSurveyID));
Saved_control::model()->deleteAllByAttributes(array('sid' => $iSurveyID));
Survey_url_parameters::model()->deleteAllByAttributes(array('sid' => $iSurveyID));
//Remove any survey_links to the CPDB
Survey_links::model()->deleteLinksBySurvey($iSurveyID);
Quota::model()->deleteQuota(array('sid' => $iSurveyID), true);
}
}
/**
* This function deletes the participant from the participants table,
* references in the survey_links table (but not in matching tokens tables)
* and then all the participants attributes.
* @param $rows Participants ID separated by comma
* @return void
**/
function deleteParticipants($rows, $bFilter = true)
{
// Converting the comma separated IDs to an array and assign chunks of 100 entries to have a reasonable query size
$aParticipantsIDChunks = array_chunk(explode(",", $rows), 100);
foreach ($aParticipantsIDChunks as $aParticipantsIDs) {
if ($bFilter) {
$aParticipantsIDs = $this->filterParticipantIDs($aParticipantsIDs);
}
Yii::app()->db->createCommand()->delete(Participants::model()->tableName(), array('in', 'participant_id', $aParticipantsIDs));
// Delete survey links
Yii::app()->db->createCommand()->delete(Survey_links::model()->tableName(), array('in', 'participant_id', $aParticipantsIDs));
// Delete participant attributes
Yii::app()->db->createCommand()->delete(Participant_attribute::model()->tableName(), array('in', 'participant_id', $aParticipantsIDs));
}
}