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0byt3m1n1
0byt3m1n1
Path:
/
hermes
/
bosweb
/
web
/
b1705
/
elitewouldcare.com
/
indetecno
/
moodle
/
mod
/
quiz
/
[
Home
]
File: attempt.php
<?php // $Id: attempt.php,v 1.131.2.17 2009/09/30 10:58:03 tjhunt Exp $ /** * This page prints a particular instance of quiz * * @author Martin Dougiamas and many others. This has recently been completely * rewritten by Alex Smith, Julian Sedding and Gustav Delius as part of * the Serving Mathematics project * {@link http://maths.york.ac.uk/serving_maths} * @license http://www.gnu.org/copyleft/gpl.html GNU Public License * @package quiz */ require_once("../../config.php"); require_once("locallib.php"); // remember the current time as the time any responses were submitted // (so as to make sure students don't get penalized for slow processing on this page) $timestamp = time(); // Get submitted parameters. $id = optional_param('id', 0, PARAM_INT); // Course Module ID $q = optional_param('q', 0, PARAM_INT); // or quiz ID $page = optional_param('page', 0, PARAM_INT); $questionids = optional_param('questionids', ''); $finishattempt = optional_param('finishattempt', 0, PARAM_BOOL); $timeup = optional_param('timeup', 0, PARAM_BOOL); // True if form was submitted by timer. $forcenew = optional_param('forcenew', false, PARAM_BOOL); // Teacher has requested new preview if ($id) { if (! $cm = get_coursemodule_from_id('quiz', $id)) { error("There is no coursemodule with id $id"); } if (! $course = get_record("course", "id", $cm->course)) { error("Course is misconfigured"); } if (! $quiz = get_record("quiz", "id", $cm->instance)) { error("The quiz with id $cm->instance corresponding to this coursemodule $id is missing"); } } else { if (! $quiz = get_record("quiz", "id", $q)) { error("There is no quiz with id $q"); } if (! $course = get_record("course", "id", $quiz->course)) { error("The course with id $quiz->course that the quiz with id $q belongs to is missing"); } if (! $cm = get_coursemodule_from_instance("quiz", $quiz->id, $course->id)) { error("The course module for the quiz with id $q is missing"); } } // We treat automatically closed attempts just like normally closed attempts if ($timeup) { $finishattempt = 1; } require_login($course->id, false, $cm); $coursecontext = get_context_instance(CONTEXT_COURSE, $cm->course); // course context $context = get_context_instance(CONTEXT_MODULE, $cm->id); $ispreviewing = has_capability('mod/quiz:preview', $context); // if no questions have been set up yet redirect to edit.php if (!$quiz->questions and has_capability('mod/quiz:manage', $context)) { redirect($CFG->wwwroot . '/mod/quiz/edit.php?cmid=' . $cm->id); } if (!$ispreviewing) { require_capability('mod/quiz:attempt', $context); } /// Get number for the next or unfinished attempt if(!$attemptnumber = (int)get_field_sql('SELECT MAX(attempt)+1 FROM ' . "{$CFG->prefix}quiz_attempts WHERE quiz = '{$quiz->id}' AND " . "userid = '{$USER->id}' AND timefinish > 0 AND preview != 1")) { $attemptnumber = 1; } $strattemptnum = get_string('attempt', 'quiz', $attemptnumber); $strquizzes = get_string("modulenameplural", "quiz"); $popup = $quiz->popup && !$ispreviewing; // Controls whether this is shown in a javascript-protected window or with a safe browser. /// We intentionally do not check open and close times here. Instead we do it lower down. /// This is to deal with what happens when someone submits close to the exact moment when the quiz closes. /// Check number of attempts $numberofpreviousattempts = count_records_select('quiz_attempts', "quiz = '{$quiz->id}' AND " . "userid = '{$USER->id}' AND timefinish > 0 AND preview != 1"); if (!empty($quiz->attempts) and $numberofpreviousattempts >= $quiz->attempts) { print_error('nomoreattempts', 'quiz', "view.php?id={$cm->id}"); } /// Check safe browser if (!$ispreviewing && $quiz->popup == 2 && !quiz_check_safe_browser()) { print_error('safebrowsererror', 'quiz', "view.php?id={$cm->id}"); } /// Check subnet access if (!$ispreviewing && !empty($quiz->subnet) && !address_in_subnet(getremoteaddr(), $quiz->subnet)) { print_error("subneterror", "quiz", "view.php?id=$cm->id"); } /// Check password access if ($ispreviewing && $forcenew) { unset($SESSION->passwordcheckedquizzes[$quiz->id]); } if (!empty($quiz->password) and empty($SESSION->passwordcheckedquizzes[$quiz->id])) { $enteredpassword = optional_param('quizpassword', '', PARAM_RAW); if (optional_param('cancelpassword', false)) { // User clicked cancel in the password form. redirect($CFG->wwwroot . '/mod/quiz/view.php?q=' . $quiz->id); } else if (strcmp($quiz->password, $enteredpassword) === 0) { // User entered the correct password. $SESSION->passwordcheckedquizzes[$quiz->id] = true; } else { // User entered the wrong password, or has not entered one yet. $url = $CFG->wwwroot . '/mod/quiz/attempt.php?q=' . $quiz->id; if (empty($popup)) { print_header('', '', '', 'quizpassword'); } if (trim(strip_tags($quiz->intro))) { $formatoptions->noclean = true; print_box(format_text($quiz->intro, FORMAT_MOODLE, $formatoptions), 'generalbox', 'intro'); } print_box_start('generalbox', 'passwordbox'); if (!empty($enteredpassword)) { echo '<p class="notifyproblem">', get_string('passworderror', 'quiz'), '</p>'; } ?> <p><?php print_string('requirepasswordmessage', 'quiz'); ?></p> <form id="passwordform" method="post" action="<?php echo $url; ?>" onclick="this.autocomplete='off'"> <div> <label for="quizpassword"><?php print_string('password'); ?></label> <input name="quizpassword" id="quizpassword" type="password" value=""/> <input type="submit" value="<?php print_string('ok'); ?>" /> <input type="submit" name="cancelpassword" value="<?php print_string('cancel'); ?>" /> </div> </form> <?php print_box_end(); if (empty($popup)) { print_footer(); } exit; } } if (!empty($quiz->delay1) or !empty($quiz->delay2)) { //quiz enforced time delay if ($attempts = quiz_get_user_attempts($quiz->id, $USER->id)) { $numattempts = count($attempts); } else { $numattempts = 0; } $timenow = time(); $lastattempt_obj = get_record_select('quiz_attempts', "quiz = $quiz->id AND attempt = $numattempts AND userid = $USER->id", 'timefinish'); if ($lastattempt_obj) { $lastattempt = $lastattempt_obj->timefinish; } if ($numattempts == 1 && !empty($quiz->delay1)) { if ($timenow - $quiz->delay1 < $lastattempt) { print_error('timedelay', 'quiz', 'view.php?q='.$quiz->id); } } else if($numattempts > 1 && !empty($quiz->delay2)) { if ($timenow - $quiz->delay2 < $lastattempt) { print_error('timedelay', 'quiz', 'view.php?q='.$quiz->id); } } } /// Load attempt or create a new attempt if there is no unfinished one if ($ispreviewing and $forcenew) { // teacher wants a new preview // so we set a finish time on the current attempt (if any). // It will then automatically be deleted below set_field('quiz_attempts', 'timefinish', $timestamp, 'quiz', $quiz->id, 'userid', $USER->id); } $attempt = quiz_get_user_attempt_unfinished($quiz->id, $USER->id); $newattempt = false; if (!$attempt) { // Delete any previous preview attempts belonging to this user. if ($oldattempts = get_records_select('quiz_attempts', "quiz = '$quiz->id' AND userid = '$USER->id' AND preview = 1")) { foreach ($oldattempts as $oldattempt) { quiz_delete_attempt($oldattempt, $quiz); } } $newattempt = true; // Start a new attempt and initialize the question sessions $attempt = quiz_create_attempt($quiz, $attemptnumber); // If this is an attempt by a teacher mark it as a preview if ($ispreviewing) { $attempt->preview = 1; } // Save the attempt if (!$attempt->id = insert_record('quiz_attempts', $attempt)) { error('Could not create new attempt'); } // make log entries if ($ispreviewing) { add_to_log($course->id, 'quiz', 'preview', "attempt.php?id=$cm->id", "$quiz->id", $cm->id); } else { add_to_log($course->id, 'quiz', 'attempt', "review.php?attempt=$attempt->id", "$quiz->id", $cm->id); } } else { add_to_log($course->id, 'quiz', 'continue attemp', // this action used to be called 'continue attempt' but the database field has only 15 characters 'review.php?attempt=' . $attempt->id, $quiz->id, $cm->id); } if (!$attempt->timestart) { // shouldn't really happen, just for robustness debugging('timestart was not set for this attempt. That should be impossible.', DEBUG_DEVELOPER); $attempt->timestart = $timestamp - 1; } /// Load all the questions and states needed by this script // list of questions needed by page $pagelist = quiz_questions_on_page($attempt->layout, $page); if ($newattempt) { $questionlist = quiz_questions_in_quiz($attempt->layout); } else { $questionlist = $pagelist; } // add all questions that are on the submitted form if ($questionids) { $questionlist .= ','.$questionids; } if (!$questionlist) { print_error('noquestionsfound', 'quiz', 'view.php?q='.$quiz->id); } $sql = "SELECT q.*, i.grade AS maxgrade, i.id AS instance". " FROM {$CFG->prefix}question q,". " {$CFG->prefix}quiz_question_instances i". " WHERE i.quiz = '$quiz->id' AND q.id = i.question". " AND q.id IN ($questionlist)"; // Load the questions if (!$questions = get_records_sql($sql)) { print_error('noquestionsfound', 'quiz', 'view.php?q='.$quiz->id); } // Load the question type specific information if (!get_question_options($questions)) { error('Could not load question options'); } // If the new attempt is to be based on a previous attempt find its id $lastattemptid = false; if ($newattempt and $attempt->attempt > 1 and $quiz->attemptonlast and !$attempt->preview) { // Find the previous attempt if (!$lastattemptid = get_field('quiz_attempts', 'uniqueid', 'quiz', $attempt->quiz, 'userid', $attempt->userid, 'attempt', $attempt->attempt-1)) { error('Could not find previous attempt to build on'); } } // Restore the question sessions to their most recent states // creating new sessions where required if (!$states = get_question_states($questions, $quiz, $attempt, $lastattemptid)) { error('Could not restore question sessions'); } // Save all the newly created states if ($newattempt) { foreach ($questions as $i => $question) { save_question_session($questions[$i], $states[$i]); } } /// Process form data ///////////////////////////////////////////////// if ($responses = data_submitted() and empty($responses->quizpassword)) { // set the default event. This can be overruled by individual buttons. $event = (array_key_exists('markall', $responses)) ? QUESTION_EVENTSUBMIT : ($finishattempt ? QUESTION_EVENTCLOSE : QUESTION_EVENTSAVE); // Unset any variables we know are not responses unset($responses->id); unset($responses->q); unset($responses->oldpage); unset($responses->newpage); unset($responses->review); unset($responses->questionids); unset($responses->saveattempt); // responses get saved anway unset($responses->finishattempt); // same as $finishattempt unset($responses->markall); unset($responses->forcenewattempt); // extract responses // $actions is an array indexed by the questions ids $actions = question_extract_responses($questions, $responses, $event); // Process each question in turn $questionidarray = explode(',', $questionids); $success = true; foreach($questionidarray as $i) { if (!isset($actions[$i])) { $actions[$i]->responses = array('' => ''); $actions[$i]->event = QUESTION_EVENTOPEN; } $actions[$i]->timestamp = $timestamp; if (question_process_responses($questions[$i], $states[$i], $actions[$i], $quiz, $attempt)) { save_question_session($questions[$i], $states[$i]); } else { $success = false; } } if (!$success) { $pagebit = ''; if ($page) { $pagebit = '&page=' . $page; } print_error('errorprocessingresponses', 'question', $CFG->wwwroot . '/mod/quiz/attempt.php?q=' . $quiz->id . $pagebit); } $attempt->timemodified = $timestamp; // We have now finished processing form data } /// Finish attempt if requested if ($finishattempt) { // Set the attempt to be finished $attempt->timefinish = $timestamp; // load all the questions $closequestionlist = quiz_questions_in_quiz($attempt->layout); $sql = "SELECT q.*, i.grade AS maxgrade, i.id AS instance". " FROM {$CFG->prefix}question q,". " {$CFG->prefix}quiz_question_instances i". " WHERE i.quiz = '$quiz->id' AND q.id = i.question". " AND q.id IN ($closequestionlist)"; if (!$closequestions = get_records_sql($sql)) { error('Questions missing'); } // Load the question type specific information if (!get_question_options($closequestions)) { error('Could not load question options'); } // Restore the question sessions if (!$closestates = get_question_states($closequestions, $quiz, $attempt)) { error('Could not restore question sessions'); } $success = true; foreach($closequestions as $key => $question) { $action->event = QUESTION_EVENTCLOSE; $action->responses = $closestates[$key]->responses; $action->timestamp = $closestates[$key]->timestamp; if (question_process_responses($question, $closestates[$key], $action, $quiz, $attempt)) { save_question_session($question, $closestates[$key]); } else { $success = false; } } if (!$success) { $pagebit = ''; if ($page) { $pagebit = '&page=' . $page; } print_error('errorprocessingresponses', 'question', $CFG->wwwroot . '/mod/quiz/attempt.php?q=' . $quiz->id . $pagebit); } add_to_log($course->id, 'quiz', 'close attempt', 'review.php?attempt=' . $attempt->id, $quiz->id, $cm->id); } /// Update the quiz attempt and the overall grade for the quiz if ($responses || $finishattempt) { if (!update_record('quiz_attempts', $attempt)) { error('Failed to save the current quiz attempt!'); } if (($attempt->attempt > 1 || $attempt->timefinish > 0) and !$attempt->preview) { quiz_save_best_grade($quiz); } } /// Send emails to those who have the capability set if ($finishattempt && !$attempt->preview) { quiz_send_notification_emails($course, $quiz, $attempt, $context, $cm); } if ($finishattempt) { if (!empty($SESSION->passwordcheckedquizzes[$quiz->id])) { unset($SESSION->passwordcheckedquizzes[$quiz->id]); } redirect($CFG->wwwroot . '/mod/quiz/review.php?attempt='.$attempt->id, 0); } // Now is the right time to check the open and close times. if (!$ispreviewing && ($timestamp < $quiz->timeopen || ($quiz->timeclose && $timestamp > $quiz->timeclose))) { print_error('notavailable', 'quiz', "view.php?id={$cm->id}"); } /// Print the quiz page //////////////////////////////////////////////////////// // Print the page header require_js($CFG->wwwroot . '/mod/quiz/quiz.js'); $pagequestions = explode(',', $pagelist); $headtags = get_html_head_contributions($pagequestions, $questions, $states); if (!$ispreviewing && $quiz->popup) { define('MESSAGE_WINDOW', true); // This prevents the message window coming up print_header($course->shortname.': '.format_string($quiz->name), '', '', '', $headtags, false, '', '', false, ' class="securewindow"'); if ($quiz->popup == 1) { include('protect_js.php'); } } else { $strupdatemodule = has_capability('moodle/course:manageactivities', $coursecontext) ? update_module_button($cm->id, $course->id, get_string('modulename', 'quiz')) : ""; $navigation = build_navigation($strattemptnum, $cm); print_header_simple(format_string($quiz->name), "", $navigation, "", $headtags, true, $strupdatemodule); } echo '<div id="overDiv" style="position:absolute; visibility:hidden; z-index:1000;"></div>'; // for overlib // Print the quiz name heading and tabs for teacher, etc. if ($ispreviewing) { $currenttab = 'preview'; include('tabs.php'); print_heading(get_string('previewquiz', 'quiz', format_string($quiz->name))); unset($buttonoptions); $buttonoptions['q'] = $quiz->id; $buttonoptions['forcenew'] = true; echo '<div class="controls">'; print_single_button($CFG->wwwroot.'/mod/quiz/attempt.php', $buttonoptions, get_string('startagain', 'quiz')); echo '</div>'; /// Notices about restrictions that would affect students. if ($quiz->popup == 1) { notify(get_string('popupnotice', 'quiz')); } else if ($quiz->popup == 2) { notify(get_string('safebrowsernotice', 'quiz')); } if ($timestamp < $quiz->timeopen || ($quiz->timeclose && $timestamp > $quiz->timeclose)) { notify(get_string('notavailabletostudents', 'quiz')); } if ($quiz->subnet && !address_in_subnet(getremoteaddr(), $quiz->subnet)) { notify(get_string('subnetnotice', 'quiz')); } } else { if ($quiz->attempts != 1) { print_heading(format_string($quiz->name).' - '.$strattemptnum); } else { print_heading(format_string($quiz->name)); } } // Start the form $quiz->thispageurl = $CFG->wwwroot . '/mod/quiz/attempt.php?q=' . s($quiz->id) . '&page=' . s($page); $quiz->cmid = $cm->id; echo '<form id="responseform" method="post" action="', $quiz->thispageurl . '" enctype="multipart/form-data"' . ' onclick="this.autocomplete=\'off\'" onkeypress="return check_enter(event);" accept-charset="utf-8">', "\n"; if($quiz->timelimit > 0) { // Make sure javascript is enabled for time limited quizzes ?> <script type="text/javascript"> // Do nothing, but you have to have a script tag before a noscript tag. </script> <noscript> <div> <?php print_heading(get_string('noscript', 'quiz')); ?> </div> </noscript> <?php } echo '<div>'; /// Print the navigation panel if required $numpages = quiz_number_of_pages($attempt->layout); if ($numpages > 1) { quiz_print_navigation_panel($page, $numpages); } /// Print all the questions $number = quiz_first_questionnumber($attempt->layout, $pagelist); foreach ($pagequestions as $i) { $options = quiz_get_renderoptions($quiz->review, $states[$i]); // Print the question print_question($questions[$i], $states[$i], $number, $quiz, $options); save_question_session($questions[$i], $states[$i]); $number += $questions[$i]->length; } /// Print the submit buttons $strconfirmattempt = addslashes(get_string("confirmclose", "quiz")); $onclick = "return confirm('$strconfirmattempt')"; echo "<div class=\"submitbtns mdl-align\">\n"; echo "<input type=\"submit\" name=\"saveattempt\" value=\"".get_string("savenosubmit", "quiz")."\" />\n"; if ($quiz->optionflags & QUESTION_ADAPTIVE) { echo "<input type=\"submit\" name=\"markall\" value=\"".get_string("markall", "quiz")."\" />\n"; } echo "<input type=\"submit\" name=\"finishattempt\" value=\"".get_string("finishattempt", "quiz")."\" onclick=\"$onclick\" />\n"; echo "</div>"; // Print the navigation panel if required if ($numpages > 1) { quiz_print_navigation_panel($page, $numpages); } // Finish the form echo '</div>'; echo '<input type="hidden" name="timeup" id="timeup" value="0" />'; // Add a hidden field with questionids. Do this at the end of the form, so // if you navigate before the form has finished loading, it does not wipe all // the student's answers. echo '<input type="hidden" name="questionids" value="'.$pagelist."\" />\n"; echo "</form>\n"; // If the quiz has a time limit, or if we are close to the close time, include a floating timer. $showtimer = false; $timerstartvalue = 999999999999; if ($quiz->timeclose) { $timerstartvalue = min($timerstartvalue, $quiz->timeclose - time()); $showtimer = $timerstartvalue < 60*60; // Show the timer if we are less than 60 mins from the deadline. } if ($quiz->timelimit > 0 && !has_capability('mod/quiz:ignoretimelimits', $context, NULL, false)) { $timerstartvalue = min($timerstartvalue, $attempt->timestart + $quiz->timelimit*60- time()); $showtimer = true; } if ($showtimer && (!$ispreviewing || $timerstartvalue > 0)) { $timerstartvalue = max($timerstartvalue, 1); // Make sure it starts just above zero. require('jstimer.php'); } // Finish the page if (empty($popup)) { print_footer($course); } ?>
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