report.php

很棒的在线教学系统

<?php
/**
 * This script lists student attempts
 *
 * @version $Id: report.php,v 1.98.2.47 2009/02/16 04:17:54 tjhunt Exp $
 * @author Martin Dougiamas, Tim Hunt and others.
 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
 * @package quiz
 *//** */

require_once($CFG->libdir.'/tablelib.php');
require_once($CFG->dirroot.'/mod/quiz/report/overview/overviewsettings_form.php');

class quiz_report extends quiz_default_report {

    /**
     * Display the report.
     */
    function display($quiz, $cm, $course) {
        global $CFG, $db;
        // Define some strings
        $strreallydel  = addslashes(get_string('deleteattemptcheck','quiz'));
        $strtimeformat = get_string('strftimedatetime');
        $strreviewquestion = get_string('reviewresponse', 'quiz');

        $context = get_context_instance(CONTEXT_MODULE, $cm->id);

        // Only print headers if not asked to download data
        if (!$download = optional_param('download', NULL)) {
            $this->print_header_and_tabs($cm, $course, $quiz, "overview");
        }

        if($attemptids = optional_param('attemptid', array(), PARAM_INT)) {
            //attempts need to be deleted
            require_capability('mod/quiz:deleteattempts', $context);
            $attemptids = optional_param('attemptid', array(), PARAM_INT);
            foreach($attemptids as $attemptid) {
                add_to_log($course->id, 'quiz', 'delete attempt', 'report.php?id=' . $cm->id,
                        $attemptid, $cm->id);
                quiz_delete_attempt($attemptid, $quiz);
            }
            //No need for a redirect, any attemptids that do not exist are ignored.
            //So no problem if the user refreshes and tries to delete the same attempts
            //twice.
        }

        // Work out some display options - whether there is feedback, and whether scores should be shown.
        $hasfeedback = quiz_has_feedback($quiz->id) && $quiz->grade > 1.e-7 && $quiz->sumgrades > 1.e-7;
        $fakeattempt = new stdClass();
        $fakeattempt->preview = false;
        $fakeattempt->timefinish = $quiz->timeopen;
        $reviewoptions = quiz_get_reviewoptions($quiz, $fakeattempt, $context);
        $showgrades = $quiz->grade && $quiz->sumgrades && $reviewoptions->scores;

        $pageoptions = array();
        $pageoptions['id'] = $cm->id;
        $pageoptions['q'] = $quiz->id;
        $pageoptions['mode'] = 'overview';

        /// find out current groups mode
        $currentgroup = groups_get_activity_group($cm, true);

        $reporturl = new moodle_url($CFG->wwwroot.'/mod/quiz/report.php', $pageoptions);
        $qmsubselect = quiz_report_qm_filter_select($quiz);
        $mform = new mod_quiz_report_overview_settings($reporturl, compact('qmsubselect', 'quiz', 'currentgroup'));
        if ($fromform = $mform->get_data()){
            $attemptsmode = $fromform->attemptsmode;
            if ($qmsubselect){
                //control is not on the form if
                //the grading method is not set 
                //to grade one attempt per user eg. for average attempt grade.
                $qmfilter = $fromform->qmfilter;
            } else {
                $qmfilter = 0;
            }
            set_user_preference('quiz_report_overview_detailedmarks', $fromform->detailedmarks);
            set_user_preference('quiz_report_pagesize', $fromform->pagesize);
            $detailedmarks = $fromform->detailedmarks;
            $pagesize = $fromform->pagesize;
        } else {
            $qmfilter = optional_param('qmfilter', 0, PARAM_INT);
            $attemptsmode = optional_param('attemptsmode', QUIZ_REPORT_ATTEMPTS_ALL, PARAM_INT);
            $detailedmarks = get_user_preferences('quiz_report_overview_detailedmarks', 1);
            $pagesize = get_user_preferences('quiz_report_pagesize', 0);
        }
        
        if ($attemptsmode == QUIZ_REPORT_ATTEMPTS_ALL && $currentgroup){
            $attemptsmode = QUIZ_REPORT_ATTEMPTS_STUDENTS_WITH;
        }
        
        if (!$reviewoptions->scores) {
            $detailedmarks = 0;
        }
        if ($pagesize < 1) {
            $pagesize = QUIZ_REPORT_DEFAULT_PAGE_SIZE;
        }
        // We only want to show the checkbox to delete attempts
        // if the user has permissions and if the report mode is showing attempts.
        $candelete = has_capability('mod/quiz:deleteattempts', $context) 
                && ($attemptsmode!= QUIZ_REPORT_ATTEMPTS_STUDENTS_WITH_NO);


        $displayoptions = array();
        $displayoptions['attemptsmode'] = $attemptsmode;
        $displayoptions['qmfilter'] = $qmfilter;
        $reporturlwithdisplayoptions = new moodle_url($CFG->wwwroot.'/mod/quiz/report.php', $pageoptions + $displayoptions);


        if ($groupmode = groups_get_activity_groupmode($cm)) {   // Groups are being used
            if (!$download) {
                groups_print_activity_menu($cm, $reporturlwithdisplayoptions->out());
            }
        }

        // Print information on the number of existing attempts
        if (!$download) { //do not print notices when downloading
            if ($strattemptnum = quiz_num_attempt_summary($quiz, $cm, true, $currentgroup)) {
                echo '<div class="quizattemptcounts">' . $strattemptnum . '</div>';
            }
        }
        $nostudents = false;
        if (!$students = get_users_by_capability($context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'','','','','','',false)){
            notify(get_string('nostudentsyet'));
            $nostudents = true;
            $studentslist = '';
        } else {
            $studentslist = join(',',array_keys($students));
        }
        
        if (empty($currentgroup)) {
            // all users who can attempt quizzes
            $groupstudentslist = '';
            $allowedlist = $studentslist;
        } else {
            // all users who can attempt quizzes and who are in the currently selected group
            if (!$groupstudents = get_users_by_capability($context, 'mod/quiz:attempt','','','','',$currentgroup,'',false)){
                notify(get_string('nostudentsingroup'));
                $nostudents = true;
                $groupstudents = array();
            }
            $groupstudentslist = join(',', array_keys($groupstudents));
            $allowedlist = $groupstudentslist;
        }

        if (!$nostudents || ($attemptsmode == QUIZ_REPORT_ATTEMPTS_ALL)){
    
            // Print information on the grading method and whether we are displaying
            // 
            if (!$download) { //do not print notices when downloading
                if ($strattempthighlight = quiz_report_highlighting_grading_method($quiz, $qmsubselect, $qmfilter)) {
                    echo '<div class="quizattemptcounts">' . $strattempthighlight . '</div>';
                }
            }
    
            // Now check if asked download of data
            if ($download) {
                $filename = clean_filename("$course->shortname ".format_string($quiz->name,true));
            }
    
            // Define table columns
            $columns = array();
            $headers = array();
            
    
            if (!$download && $candelete) {
                $columns[]= 'checkbox';
                $headers[]= NULL;
            }
            
            if (!$download && $CFG->grade_report_showuserimage) {
                $columns[]= 'picture';
                $headers[]= '';
            }
    
            $columns[]= 'fullname';
            $headers[]= get_string('name');
    
            if ($CFG->grade_report_showuseridnumber) {
                $columns[]= 'idnumber';
                $headers[]= get_string('idnumber');
            }
            
            $columns[]= 'timestart';
            $headers[]= get_string('startedon', 'quiz');
    
            $columns[]= 'timefinish';
            $headers[]= get_string('timecompleted','quiz');
    
            $columns[]= 'duration';
            $headers[]= get_string('attemptduration', 'quiz');
    
            if ($showgrades) {
                $columns[] = 'sumgrades';
                $headers[] = get_string('grade', 'quiz').'/'.$quiz->grade;
            }
    
            if ($detailedmarks) {
                // we want to display marks for all questions
                $questions = quiz_report_load_questions($quiz);
                foreach ($questions as $id => $question) {
                    // Ignore questions of zero length
                    $columns[] = 'qsgrade'.$id;
                    $headers[] = '#'.$question->number;
                }
            }
    
            if ($hasfeedback) {
                $columns[] = 'feedbacktext';
                $headers[] = get_string('feedback', 'quiz');
            }
    
            if (!$download) {
                // Set up the table
    
                $table = new flexible_table('mod-quiz-report-overview-report');
    
                $table->define_columns($columns);
                $table->define_headers($headers);
                $table->define_baseurl($reporturlwithdisplayoptions->out());
    
                $table->sortable(true);
                $table->collapsible(true);
    
                $table->column_suppress('picture');
                $table->column_suppress('fullname');
                $table->column_suppress('idnumber');