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Files
CATI_Tool/include/limesurvey/question.php
2011-02-21 00:30:48 +00:00

627 lines
22 KiB
PHP

<?php
/*
* LimeSurvey
* Copyright (C) 2007 The LimeSurvey Project Team / Carsten Schmitz
* All rights reserved.
* License: GNU/GPL License v2 or later, see LICENSE.php
* LimeSurvey is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*
* $Id: question.php 7363 2009-07-29 12:28:38Z c_schmitz $
*/
//Security Checked: POST, GET, SESSION, REQUEST, returnglobal, DB
if (!isset($homedir) || isset($_REQUEST['$homedir'])) {die("Cannot run this script directly");}
//Move current step
if (!isset($_SESSION['step'])) {$_SESSION['step']=0;}
if (!isset($_SESSION['totalsteps'])) {$_SESSION['totalsteps']=0;}
if (!isset($_POST['newgroupondisplay'])) {$_POST['newgroupondisplay'] = "";}
if (isset($move) && $move == "moveprev" && !$_POST['newgroupondisplay'] && $thissurvey['allowprev']=='Y') {$_SESSION['step'] = $thisstep-1;}
elseif (isset($move) && $move == "moveprev" && $_POST['newgroupondisplay'] == "Y" && $thissurvey['allowprev']=='Y') {$_SESSION['step'] = $thisstep;}
if (isset($move) && $move == "movenext")
{
if ($_SESSION['step']==$thisstep)
$_SESSION['step'] = $thisstep+1;
}
// We do not keep the participant session anymore when the same browser is used to answer a second time a survey (let's think of a library PC for instance).
// Previously we used to keep the session and redirect the user to the
// submit page.
//if (isset($_SESSION['finished'])) {$move="movesubmit"; }
//CHECK IF ALL MANDATORY QUESTIONS HAVE BEEN ANSWERED ############################################
//First, see if we are moving backwards or doing a Save so far, and its OK not to check:
if ($allowmandbackwards==1 && ((isset($move) && $move == "moveprev") || (isset($_POST['saveall']) && $_POST['saveall'] == $clang->gT("Save your responses so far"))))
{
$backok="Y";
}
else
{
$backok="N";
}
//Now, we check mandatory questions if necessary
//CHECK IF ALL CONDITIONAL MANDATORY QUESTIONS THAT APPLY HAVE BEEN ANSWERED
$notanswered=addtoarray_single(checkmandatorys($move,$backok),checkconditionalmandatorys($move,$backok));
//CHECK PREGS
$notvalidated=checkpregs($move,$backok);
//CHECK QUOTA
if ($thissurvey['active'] == "Y")
{
check_quota('enforce',$surveyid);
}
//SEE IF $surveyid EXISTS ####################################################################
if ($surveyexists <1)
{
sendcacheheaders();
doHeader();
//SURVEY DOES NOT EXIST. POLITELY EXIT.
echo templatereplace(file_get_contents("$thistpl/startpage.pstpl"));
echo "\t<center><br />\n";
echo "\t".$clang->gT("Sorry. There is no matching survey.")."<br /></center>&nbsp;\n";
echo templatereplace(file_get_contents("$thistpl/endpage.pstpl"));
doFooter();
exit;
}
//RUN THIS IF THIS IS THE FIRST TIME
if (!isset($_SESSION['step']) || !$_SESSION['step'])
{
$totalquestions = buildsurveysession();
/*
sendcacheheaders();
doHeader();
echo templatereplace(file_get_contents("$thistpl/startpage.pstpl"));
echo "\n<form method='post' action='{$_SERVER['PHP_SELF']}' id='limesurvey' name='limesurvey'>\n";
echo "\n\n<!-- START THE SURVEY -->\n";
echo templatereplace(file_get_contents("$thistpl/welcome.pstpl"))."\n";
if ($thissurvey['private'] == "Y")
{
echo templatereplace(file_get_contents("$thistpl/privacy.pstpl"))."\n";
}
$navigator = surveymover();
echo templatereplace(file_get_contents("$thistpl/navigator.pstpl"));
if ($thissurvey['active'] != "Y")
{
echo "\t\t<center><font color='red' size='2'>".$clang->gT("This survey is not currently active. You will not be able to save your responses.")."</font></center>\n";
}
echo "\n<input type='hidden' name='sid' value='$surveyid' id='sid' />\n";
echo "\n<input type='hidden' name='token' value='$token' id='token' />\n";
echo "\n<input type='hidden' name='lastgroupname' value='_WELCOME_SCREEN_' id='lastgroupname' />\n"; //This is to ensure consistency with mandatory checks, and new group test
echo "\n</form>\n";
echo templatereplace(file_get_contents("$thistpl/endpage.pstpl"));
doFooter();
exit;
*/
$_SESSION['step'] = 1;
}
//******************************************************************************************************
//PRESENT SURVEY
//******************************************************************************************************
//GET GROUP DETAILS
if ($_SESSION['step'] == "0") {$currentquestion=$_SESSION['step'];}
else {$currentquestion=$_SESSION['step']-1;}
$ia=$_SESSION['fieldarray'][$currentquestion];
list($newgroup, $gid, $groupname, $groupdescription, $gl)=checkIfNewGroup($ia);
// MANAGE CONDITIONAL QUESTIONS
$conditionforthisquestion=$ia[7];
$questionsSkipped=0;
while ($conditionforthisquestion == "Y") //IF CONDITIONAL, CHECK IF CONDITIONS ARE MET
{ // this is a while, not an IF because if we skip the question we loop on the next question, see below
if (checkquestionfordisplay($ia[0]) === true)
{ // question will be displayed
// we set conditionforthisquestion to N here because it is used later to select style=display:'' for the question
$conditionforthisquestion="N";
}
else
{
$questionsSkipped++;
if (returnglobal('move') == "movenext")
{
$currentquestion++;
if(isset($_SESSION['fieldarray'][$currentquestion]))
{
$ia=$_SESSION['fieldarray'][$currentquestion];
}
if ($_SESSION['step']>=$_SESSION['totalsteps'])
{
$move="movesubmit";
submitanswer(); // complete this answer (submitdate)
break;
}
$_SESSION['step']++;
foreach ($_SESSION['grouplist'] as $gl)
{
if ($gl[0] == $ia[5])
{
$gid=$gl[0];
$groupname=$gl[1];
$groupdescription=$gl[2];
if (auto_unescape($_POST['lastgroupname']) != strip_tags($groupname) && $groupdescription) {$newgroup = "Y";} else {$newgroup == "N";}
}
}
}
elseif (returnglobal('move') == "moveprev")
{
$currentquestion--;
$ia=$_SESSION['fieldarray'][$currentquestion];
$_SESSION['step']--;
}
// because we skip this question, we need to loop on the same condition 'check-block'
// with the new question (we have overwritten $ia)
$conditionforthisquestion=$ia[7];
}
} // End of while conditionforthisquestion=="Y"
//SUBMIT
if ((isset($move) && $move == "movesubmit") && (!isset($notanswered) || !$notanswered) && (!isset($notvalidated) || !$notvalidated ))
{
if ($thissurvey['refurl'] == "Y")
{
if (!in_array("refurl", $_SESSION['insertarray'])) //Only add this if it doesn't already exist
{
$_SESSION['insertarray'][] = "refurl";
}
// $_SESSION['refurl'] = $_SESSION['refurl'];
}
//COMMIT CHANGES TO DATABASE
if ($thissurvey['active'] != "Y")
{
//if($thissurvey['printanswers'] != 'Y' && $thissurvey['usecookie'] != 'Y' && $tokensexist !=1)
if ($thissurvey['assessments']== "Y")
{
$assessments = doAssessment($surveyid);
}
if($thissurvey['printanswers'] != 'Y')
{
killSession();
}
sendcacheheaders();
doHeader();
echo templatereplace(file_get_contents("$thistpl/startpage.pstpl"));
//Check for assessments
if ($thissurvey['assessments']== "Y" && $assessments)
{
echo templatereplace(file_get_contents("$thistpl/assessment.pstpl"));
}
$completed = $thissurvey['surveyls_endtext'];
$completed .= "<br /><strong><font size='2' color='red'>".$clang->gT("Did Not Save")."</font></strong><br /><br />\n\n";
$completed .= $clang->gT("Your survey responses have not been recorded. This survey is not yet active.")."<br /><br />\n";
if ($thissurvey['printanswers'] == 'Y')
{
// ClearAll link is only relevant for survey with printanswers enabled
// in other cases the session is cleared at submit time
$completed .= "<a href='".$_SERVER['PHP_SELF']."?sid=$surveyid&amp;move=clearall'>".$clang->gT("Clear Responses")."</a><br /><br />\n";
}
}
else //THE FOLLOWING DEALS WITH SUBMITTING ANSWERS AND COMPLETING AN ACTIVE SURVEY
{
if ($thissurvey['usecookie'] == "Y" && $tokensexist != 1) //don't use cookies if tokens are being used
{
$cookiename="PHPSID".returnglobal('sid')."STATUS";
setcookie("$cookiename", "COMPLETE", time() + 31536000); //Cookie will expire in 365 days
}
//Before doing the "templatereplace()" function, check the $thissurvey['url']
//field for limereplace stuff, and do transformations!
$thissurvey['surveyls_url']=insertansReplace($thissurvey['surveyls_url']);
$thissurvey['surveyls_url']=passthruReplace($thissurvey['surveyls_url'], $thissurvey);
$content='';
$content .= templatereplace(file_get_contents("$thistpl/startpage.pstpl"));
//Check for assessments
if ($thissurvey['assessments']== "Y")
{
$assessments = doAssessment($surveyid);
if ($assessments)
{
$content .= templatereplace(file_get_contents("$thistpl/assessment.pstpl"));
}
}
if (FlattenText($thissurvey['surveyls_endtext'])=='')
{
$completed = "<br /><span class='success'>".$clang->gT("Thank you!")."</span><br /><br />\n\n"
. $clang->gT("Your survey responses have been recorded.")."<br /><br />\n";
}
else
{
$completed = $thissurvey['surveyls_endtext'];
}
// Link to Print Answer Preview **********
if ($thissurvey['printanswers']=='Y')
{
$completed .= "<br /><br />"
."<a class='printlink' href='printanswers.php' target='_blank'>"
.$clang->gT("Click here to print your answers.")
."</a><br />\n";
}
//*****************************************
if ($thissurvey['publicstatistics']=='Y' && $thissurvey['printanswers']=='Y') {$completed .='<br />'.$clang->gT("or");}
// Link to Public statistics **********
if ($thissurvey['publicstatistics']=='Y')
{
$completed .= "<br /><br />"
."<a class='publicstatisticslink' href='statistics_user.php?sid=$surveyid' target='_blank'>"
.$clang->gT("View the statistics for this survey.")
."</a><br />\n";
}
//*****************************************
//Update the token if needed and send a confirmation email
if (isset($clienttoken) && $clienttoken)
{
submittokens();
}
//Send notification to survey administrator //Thanks to Jeff Clement http://jclement.ca
if ($thissurvey['sendnotification'] > 0 && $thissurvey['adminemail'])
{
sendsubmitnotification($thissurvey['sendnotification']);
}
$_SESSION['finished']=true;
$_SESSION['sid']=$surveyid;
if (isset($thissurvey['autoredirect']) && $thissurvey['autoredirect'] == "Y" && $thissurvey['surveyls_url'])
{
//Automatically redirect the page to the "url" setting for the survey
$url = insertansReplace($thissurvey['surveyls_url']);
$url = passthruReplace($url, $thissurvey);
$url=str_replace("{SAVEDID}",$saved_id, $url); // to activate the SAVEDID in the END URL
$url=str_replace("{TOKEN}",$clienttoken, $url); // to activate the TOKEN in the END URL
$url=str_replace("{SID}", $surveyid, $url); // to activate the SID in the END URL
$url=str_replace("{LANG}", $clang->getlangcode(), $url); // to activate the LANG in the END URL
//queXS Addition
include_once("quexs.php");
$quexs_url = get_start_interview_url();
$url = str_replace("{STARTINTERVIEWURL}", $quexs_url, $url);
$end_url = get_end_interview_url();
$url = str_replace("{ENDINTERVIEWURL}", $end_url, $url);
header("Location: {$url}");
}
//if($thissurvey['printanswers'] != 'Y' && $thissurvey['usecookie'] != 'Y' && $tokensexist !=1)
if($thissurvey['printanswers'] != 'Y')
{
killSession();
}
doHeader();
if (isset($content)) {echo $content;}
}
echo templatereplace(file_get_contents("$thistpl/completed.pstpl"));
echo "\n<br />\n";
echo templatereplace(file_get_contents("$thistpl/endpage.pstpl"));
doFooter();
exit;
}
if ($questionsSkipped == 0 && $newgroup == "Y" && isset($move) && $move == "moveprev" && (isset($_POST['grpdesc']) && $_POST['grpdesc']=="Y")) //a small trick to manage moving backwards from a group description
{
//This does not work properly in all instances.
$currentquestion++;
$ia=$_SESSION['fieldarray'][$currentquestion];
$_SESSION['step']++;
}
list($newgroup, $gid, $groupname, $groupdescription, $gl)=checkIfNewGroup($ia);
//Check if current page is for group description only
$bIsGroupDescrPage = false;
if ($newgroup == "Y" && $groupdescription && (isset($move) && $move != "moveprev"))
{
// This is a group description page
// - $ia contains next question description,
// but his question is not displayed, it is only used to know current group
// - in this case answers' inputnames mustn't be added to filednames hidden input
$bIsGroupDescrPage = true;
}
require_once("qanda.php");
$mandatorys=array();
$mandatoryfns=array();
$conmandatorys=array();
$conmandatoryfns=array();
$conditions=array();
$inputnames=array();
list($plus_qanda, $plus_inputnames)=retrieveAnswers($ia);
if ($plus_qanda)
{
$plus_qanda[] = $ia[4];
$plus_qanda[] = $ia[6]; // adds madatory identifyer for adding mandatory class to question wrapping div
$qanda[]=$plus_qanda;
}
if ($plus_inputnames && !$bIsGroupDescrPage)
{
// Add answers' inputnames to $inputnames unless this is a group description page
$inputnames = addtoarray_single($inputnames, $plus_inputnames);
}
//Display the "mandatory" popup if necessary
if (isset($notanswered) && $notanswered!=false)
{
list($mandatorypopup, $popup)=mandatory_popup($ia, $notanswered);
}
//Display the "validation" popup if necessary
if (isset($notvalidated))
{
list($validationpopup, $vpopup)=validation_popup($ia, $notvalidated);
}
//Get list of mandatory questions
list($plusman, $pluscon)=create_mandatorylist($ia);
if ($plusman !== null)
{
list($plus_man, $plus_manfns)=$plusman;
$mandatorys=addtoarray_single($mandatorys, $plus_man);
$mandatoryfns=addtoarray_single($mandatoryfns, $plus_manfns);
}
if ($pluscon !== null)
{
list($plus_conman, $plus_conmanfns)=$pluscon;
$conmandatorys=addtoarray_single($conmandatorys, $plus_conman);
$conmandatoryfns=addtoarray_single($conmandatoryfns, $plus_conmanfns);
}
//Build an array containing the conditions that apply for this page
$plus_conditions=retrieveConditionInfo($ia); //Returns false if no conditions
if ($plus_conditions)
{
$conditions = addtoarray_single($conditions, $plus_conditions);
}
//------------------------END DEVELOPMENT OF QUESTION
$percentcomplete = makegraph($_SESSION['step'], $_SESSION['totalsteps']);
//READ TEMPLATES, INSERT DATA AND PRESENT PAGE
sendcacheheaders();
doHeader();
if (isset($popup)) {echo $popup;}
if (isset($vpopup)) {echo $vpopup;}
echo templatereplace(file_get_contents("$thistpl/startpage.pstpl"));
echo "\n<form method='post' action='{$_SERVER['PHP_SELF']}' id='limesurvey' name='limesurvey'>\n";
//PUT LIST OF FIELDS INTO HIDDEN FORM ELEMENT
echo "\n\n<!-- INPUT NAMES -->\n";
echo "\t<input type='hidden' name='fieldnames' value='";
echo implode("|", $inputnames);
echo "' id='fieldnames' />\n";
echo "\n\n<!-- START THE SURVEY -->\n";
echo templatereplace(file_get_contents("$thistpl/survey.pstpl"));
if ($bIsGroupDescrPage)
{
$presentinggroupdescription = "yes";
echo "\n\n<!-- START THE GROUP DESCRIPTION -->\n";
echo "\t\t\t<input type='hidden' name='grpdesc' value='Y' id='grpdesc' />\n";
echo templatereplace(file_get_contents("$thistpl/startgroup.pstpl"));
echo "\n<br />\n";
//if ($groupdescription)
//{
echo templatereplace(file_get_contents("$thistpl/groupdescription.pstpl"));
//}
echo "\n";
echo "\n\n<!-- JAVASCRIPT FOR CONDITIONAL QUESTIONS -->\n";
echo "\t<script type='text/javascript'>\n";
echo "\t<!--\n";
echo "\t\tfunction checkconditions(value, name, type)\n";
echo "\t\t\t{\n";
echo "\t\t\t}\n";
echo "\t//-->\n";
echo "\t</script>\n\n";
echo "\n\n<!-- END THE GROUP -->\n";
echo templatereplace(file_get_contents("$thistpl/endgroup.pstpl"));
echo "\n";
$_SESSION['step']--;
echo "\t\t\t<input type='hidden' name='newgroupondisplay' value='Y' id='newgroupondisplay' />\n";
}
else
{
echo "\n\n<!-- START THE GROUP -->\n";
// foreach(file("$thistpl/startgroup.pstpl") as $op)
// {
// echo "\t".templatereplace($op);
// }
echo templatereplace(file_get_contents("$thistpl/startgroup.pstpl"));
echo "\n";
echo "\n\n<!-- JAVASCRIPT FOR CONDITIONAL QUESTIONS -->\n";
echo "\t<script type='text/javascript'>\n";
echo "\t<!--\n";
echo "\t\tfunction checkconditions(value, name, type)\n";
echo "\t\t\t{\n";
echo "\t\t\t}\n";
echo "\t//-->\n";
echo "\t</script>\n\n";
//Display the "mandatory" message on page if necessary
if (isset($showpopups) && $showpopups == 0 && isset($notanswered) && $notanswered == true)
{
echo "<p><span class='errormandatory'>" . $clang->gT("One or more mandatory questions have not been answered. You cannot proceed until these have been completed.") . "</span></p>";
}
//Display the "validation" message on page if necessary
if (isset($showpopups) && $showpopups == 0 && isset($notvalidated) && $notvalidated == true)
{
echo "<p><span class='errormandatory'>" . $clang->gT("One or more questions have not been answered in a valid manner. You cannot proceed until these answers are valid.") . "</span></p>";
}
echo "\n\n<!-- PRESENT THE QUESTIONS -->\n";
if (is_array($qanda))
{
foreach ($qanda as $qa)
{
$q_class = question_class($qa[8]); // render question class (see common.php)
if ($qa[9] == 'Y')
{
$man_class = ' mandatory';
}
else
{
$man_class = '';
}
// Fixed by lemeur: can't rely on javascript checkconditions with
// question-by-question display to hide/show conditionnal questions
// as conditions are evaluated with php code
// Let's use result from previous condition eval instead
// (note there is only 1 question, $conditionforthisquestion is the result from
// condition eval in php)
// if ($qa[3] != 'Y') {$n_q_display = '';} else { $n_q_display = ' style="display: none;"';}
if ($conditionforthisquestion != 'Y') {$n_q_display = '';} else { $n_q_display = ' style="display: none;"';}
echo '
<!-- NEW QUESTION -->
<div id="question'.$qa[4].'" class="'.$q_class.$man_class.'"'.$n_q_display.'>
';
$question= $qa[0];
$answer=$qa[1];
$help=$qa[2];
$questioncode=$qa[5];
echo templatereplace(file_get_contents("$thistpl/question.pstpl"));
echo '
</div>
';
}
}
echo "\n\n<!-- END THE GROUP -->\n";
echo templatereplace(file_get_contents("$thistpl/endgroup.pstpl"));
echo "\n";
}
$navigator = surveymover();
echo "\n\n<!-- PRESENT THE NAVIGATOR -->\n";
echo templatereplace(file_get_contents("$thistpl/navigator.pstpl"));
echo "\n";
if ($thissurvey['active'] != "Y")
{
echo "\t\t<center><font color='red' size='2'>".$clang->gT("This survey is not currently active. You will not be able to save your responses.")."</font></center>\n";
}
echo "\n";
if (isset($conditions) && is_array($conditions) && count($conditions) != 0)
{
//if conditions exist, create hidden inputs for 'previously' answered questions
// Note that due to move 'back' possibility, there may be answers from next pages
// However we make sure that no answer from this page are inserted here
foreach (array_keys($_SESSION) as $SESak)
{
if (in_array($SESak, $_SESSION['insertarray']) && !in_array($SESak, $inputnames))
{
echo "<input type='hidden' name='java$SESak' id='java$SESak' value='" . htmlspecialchars($_SESSION[$SESak],ENT_QUOTES) . "' />\n";
}
}
}
//SOME STUFF FOR MANDATORY QUESTIONS
if (remove_nulls_from_array($mandatorys) && $newgroup != "Y")
{
$mandatory=implode("|", remove_nulls_from_array($mandatorys));
echo "<input type='hidden' name='mandatory' value='$mandatory' id='mandatory' />\n";
}
if (remove_nulls_from_array($conmandatorys))
{
$conmandatory=implode("|", remove_nulls_from_array($conmandatorys));
echo "<input type='hidden' name='conmandatory' value='$conmandatory' id='conmandatory' />\n";
}
if (remove_nulls_from_array($mandatoryfns))
{
$mandatoryfn=implode("|", remove_nulls_from_array($mandatoryfns));
echo "<input type='hidden' name='mandatoryfn' value='$mandatoryfn' id='mandatoryfn' />\n";
}
if (remove_nulls_from_array($conmandatoryfns))
{
$conmandatoryfn=implode("|", remove_nulls_from_array($conmandatoryfns));
echo "<input type='hidden' name='conmandatoryfn' value='$conmandatoryfn' id='conmandatoryfn' />\n";
}
echo "<input type='hidden' name='thisstep' value='{$_SESSION['step']}' id='thisstep' />\n";
echo "<input type='hidden' name='sid' value='$surveyid' id='sid' />\n";
echo "<input type='hidden' name='token' value='$token' id='token' />\n";
echo "<input type='hidden' name='lastgroupname' value='".htmlspecialchars(strip_tags($groupname),ENT_QUOTES,'UTF-8')."' id='lastgroupname' />\n";
echo "</form>\n";
//foreach(file("$thistpl/endpage.pstpl") as $op)
//{
// echo templatereplace($op);
//}
echo templatereplace(file_get_contents("$thistpl/endpage.pstpl"));
doFooter();
function checkIfNewGroup($ia)
{
foreach ($_SESSION['grouplist'] as $gl)
{
if ($gl[0] == $ia[5])
{
$gid=$gl[0];
$groupname=$gl[1];
$groupdescription=$gl[2];
if (isset($_POST['lastgroupname']) && auto_unescape($_POST['lastgroupname']) != strip_tags($groupname) && $groupdescription)
{
$newgroup = "Y";
}
else
{
$newgroup = "N";
}
if (!isset($_POST['lastgroupname']) && isset($move)) {$newgroup="Y";}
}
}
return array($newgroup, $gid, $groupname, $groupdescription, $gl);
}
?>