mod/quiz/view.php

   1 <?php  // $Id$
   2
   3 // This page prints a particular instance of quiz
   4
   5     require_once("../../config.php");
   6     require_once("locallib.php");
   7     require_once($CFG->libdir.'/blocklib.php');
   8     require_once('pagelib.php');
   9
  10     $id          = optional_param('id', 0, PARAM_INT); // Course Module ID, or
  11     $q           = optional_param('q',  0, PARAM_INT);  // quiz ID
  12     $edit        = optional_param('edit', '');
  13
  14
  15     if ($id) {
  16         if (! $cm = get_record("course_modules", "id", $id)) {
  17             error("There is no coursemodule with id $id");
  18         }
  19
  20         if (! $course = get_record("course", "id", $cm->course)) {
  21             error("Course is misconfigured");
  22         }
  23
  24         if (! $quiz = get_record("quiz", "id", $cm->instance)) {
  25             error("The quiz with id $cm->instance corresponding to this coursemodule $id is missing");
  26         }
  27
  28     } else {
  29         if (! $quiz = get_record("quiz", "id", $q)) {
  30             error("There is no quiz with id $q");
  31         }
  32         if (! $course = get_record("course", "id", $quiz->course)) {
  33             error("The course with id $quiz->course that the quiz with id $q belongs to is missing");
  34         }
  35         if (! $cm = get_coursemodule_from_instance("quiz", $quiz->id, $course->id)) {
  36             error("The course module for the quiz with id $q is missing");
  37         }
  38     }
  39
  40     require_login($course->id, false, $cm);
  41     $isteacher = isteacher($course->id);
  42
  43     // if no questions have been set up yet redirect to edit.php
  44     if (!$quiz->questions and isteacheredit($course->id)) {
  45         redirect('edit.php?quizid='.$quiz->id);
  46     }
  47
  48     add_to_log($course->id, "quiz", "view", "view.php?id=$cm->id", $quiz->id, $cm->id);
  49
  50     $timenow = time();
  51
  52 // Initialize $PAGE, compute blocks
  53
  54     $PAGE       = page_create_instance($quiz->id);
  55     $pageblocks = blocks_setup($PAGE);
  56     $blocks_preferred_width = bounded_number(180, blocks_preferred_width($pageblocks[BLOCK_POS_LEFT]), 210);
  57
  58 // Print the page header
  59
  60     if (!empty($edit) && $PAGE->user_allowed_editing()) {
  61         if ($edit == 'on') {
  62             $USER->editing = true;
  63         } else if ($edit == 'off') {
  64             $USER->editing = false;
  65         }
  66     }
  67
  68     $PAGE->print_header($course->shortname.': %fullname%');
  69
  70     echo '<table id="layout-table"><tr>';
  71
  72     if(!empty($CFG->showblocksonmodpages) && (blocks_have_content($pageblocks, BLOCK_POS_LEFT) || $PAGE->user_is_editing())) {
  73         echo '<td style="width: '.$blocks_preferred_width.'px;" id="left-column">';
  74         blocks_print_group($PAGE, $pageblocks, BLOCK_POS_LEFT);
  75         echo '</td>';
  76     }
  77
  78     echo '<td id="middle-column">';
  79
  80     $available = ($quiz->timeopen < $timenow and $timenow < $quiz->timeclose) || $isteacher;
  81
  82 // Print the main part of the page
  83
  84     // Print heading and tabs for teacher
  85     if ($isteacher) {
  86         $currenttab = 'info';
  87         include('tabs.php');
  88     }
  89     print_heading(format_string($quiz->name));
  90
  91     if (trim(strip_tags($quiz->intro))) {
  92         print_simple_box(format_text($quiz->intro), "center");
  93     }
  94
  95     if ($quiz->attempts > 1) {
  96         echo "<p align=\"center\">".get_string("attemptsallowed", "quiz").": $quiz->attempts</p>";
  97         echo "<p align=\"center\">".get_string("grademethod", "quiz").": ".$QUIZ_GRADE_METHOD[$quiz->grademethod]."</p>";
  98     } else {
  99         echo "<br />";
 100     }
 101     if ($available) {
 102         if ($quiz->timelimit) {
 103             echo "<p align=\"center\">".get_string("quiztimelimit","quiz", format_time($quiz->timelimit * 60))."</p>";
 104         }
 105         echo "<p align=\"center\">".get_string("quizavailable", "quiz", userdate($quiz->timeclose));
 106     } else if ($timenow < $quiz->timeopen) {
 107         echo "<p align=\"center\">".get_string("quiznotavailable", "quiz", userdate($quiz->timeopen));
 108     } else {
 109         echo "<p align=\"center\">".get_string("quizclosed", "quiz", userdate($quiz->timeclose));
 110     }
 111
 112
 113     // This is all the teacher will get
 114     if ($isteacher) {
 115
 116         if ($attemptcount = count_records('quiz_attempts', 'quiz', $quiz->id, 'preview', 0)) {
 117
 118             $strviewallanswers  = get_string("viewallanswers", "quiz", $attemptcount);
 119             $usercount = count_records_select('quiz_attempts', "quiz = '$quiz->id' AND preview = '0'", 'COUNT(DISTINCT userid)');
 120             $strusers  = $course->students;
 121
 122             notify("<a href=\"report.php?mode=overview&amp;id=$cm->id\">$strviewallanswers ($usercount $strusers)</a>");
 123         }
 124         print_footer($course);
 125         exit;
 126     }
 127
 128     if (isguest()) {
 129
 130         $wwwroot = $CFG->wwwroot.'/login/index.php';
 131         if (!empty($CFG->loginhttps)) {
 132             $wwwroot = str_replace('http','https', $wwwroot);
 133         }
 134
 135         notice_yesno(get_string('guestno', 'quiz').'<br /><br />'.get_string('liketologin'),
 136                      $wwwroot, $_SERVER['HTTP_REFERER']);
 137         print_footer($course);
 138         exit;
 139     }
 140
 141     if ($attempts = quiz_get_user_attempts($quiz->id, $USER->id)) {
 142         $numattempts = count($attempts);
 143     } else {
 144         $numattempts = 0;
 145     }
 146
 147     $unfinished = false;
 148     if ($unfinishedattempt =  quiz_get_user_attempt_unfinished($quiz->id, $USER->id)) {
 149         $attempts[] = $unfinishedattempt;
 150         $unfinished = true;
 151     }
 152
 153     $strattempt       = get_string("attempt", "quiz");
 154     $strtimetaken     = get_string("timetaken", "quiz");
 155     $strtimecompleted = get_string("timecompleted", "quiz");
 156     $strgrade         = get_string("grade");
 157     $strmarks          = get_string('marks', 'quiz');
 158     $strbestgrade     = $QUIZ_GRADE_METHOD[$quiz->grademethod];
 159
 160     $windowoptions = "left=0, top=0, channelmode=yes, fullscreen=yes, scrollbars=yes, resizeable=no, directories=no, toolbar=no, titlebar=no, location=no, status=no, menubar=no";
 161
 162     $mygrade = quiz_get_best_grade($quiz, $USER->id);
 163
 164 /// Now print table with existing attempts
 165
 166     if ($numattempts) {
 167
 168     /// prepare table header
 169         if ($quiz->grade and $quiz->sumgrades) { // Grades used so have more columns in table
 170             if ($quiz->grade <> $quiz->sumgrades) {
 171                 $table->head = array($strattempt, $strtimetaken, $strtimecompleted, "$strmarks / $quiz->sumgrades", "$strgrade / $quiz->grade");
 172                 $table->align = array("center", "center", "left", "right", "right");
 173                 $table->size = array("", "", "", "", "");
 174             } else {
 175                 $table->head = array($strattempt, $strtimetaken, $strtimecompleted, "$strgrade / $quiz->grade");
 176                 $table->align = array("center", "center", "left", "right");
 177                 $table->size = array("", "", "", "");
 178             }
 179
 180         } else {  // No grades are being used
 181             $table->head = array($strattempt, $strtimetaken, $strtimecompleted);
 182             $table->align = array("center", "center", "left");
 183             $table->size = array("", "", "");
 184         }
 185
 186     /// One row for each attempt
 187         foreach ($attempts as $attempt) {
 188
 189         /// prepare strings for time taken and date completed
 190             $timetaken = '';
 191             $datecompleted = '';
 192             if ($attempt->timefinish > 0) { // attempt has finished
 193                 $timetaken = format_time($attempt->timefinish - $attempt->timestart);
 194                 $datecompleted = userdate($attempt->timefinish);
 195             } else if ($available) { // The student can continue this attempt, so put appropriate link
 196                 $timetaken = format_time(time() - $attempt->timestart);
 197                 $strconfirmstartattempt = addslashes(get_string("confirmstartattempt","quiz"));
 198                 $datecompleted  = "\n".'<script language="javascript" type="text/javascript">';
 199                 $datecompleted .= "\n<!--\n"; // -->
 200                 if (!empty($quiz->popup)) {
 201                     $datecompleted .= "var windowoptions = 'left=0, top=0, height='+window.screen.height+
 202                      ', width='+window.screen.width+', channelmode=yes, fullscreen=yes, scrollbars=yes, '+
 203                      'resizeable=no, directories=no, toolbar=no, titlebar=no, location=no, status=no, '+
 204                      'menubar=no';\n";
 205                     $jslink  = 'javascript:';
 206                     if ($quiz->timelimit) {
 207                         $jslink .=  "if (confirm('$strconfirmstartattempt')) ";
 208                     }
 209                     $jslink .= "var popup = window.open(\\'attempt.php?id=$cm->id\\', \\'quizpopup\\', windowoptions);";
 210                 } else {
 211                     $jslink = "attempt.php?id=$cm->id";
 212                 }
 213
 214                 $linktext = get_string('continueattemptquiz', 'quiz');
 215                 $datecompleted .= "document.write('<a href=\"$jslink\" alt=\"$linktext\">$linktext</a>');";
 216                 $datecompleted .= "\n-->\n";
 217                 $datecompleted .= '</script>';
 218                 $datecompleted .= '<noscript>';
 219                 $datecompleted .= '<strong>'.get_string('noscript', 'quiz').'</strong>';
 220                 $datecompleted .= '</noscript>';
 221             } else { // attempt was not completed but is also not available any more.
 222                 $timetaken = format_time($quiz->timeclose - $attempt->timestart);
 223                 $datecompleted = userdate($quiz->timeclose);
 224             }
 225
 226         /// prepare strings for attempt number, mark and grade
 227             if ($quiz->grade and $quiz->sumgrades) {
 228                 $attemptmark  = round($attempt->sumgrades,$quiz->decimalpoints);
 229                 $attemptgrade = round(($attempt->sumgrades/$quiz->sumgrades)*$quiz->grade,$quiz->decimalpoints);
 230
 231                 // highlight the highest grade if appropriate
 232                 if ($attemptgrade == $mygrade and ($quiz->grademethod == QUIZ_GRADEHIGHEST)) {
 233                     $attemptgrade = "<span class=\"highlight\">$attemptgrade</span>";
 234                 }
 235
 236                 // if attempt is closed and review is allowed then make attemptnumber and
 237                 // mark and grade into links to review page
 238                 if (quiz_review_allowed($quiz) and $attempt->timefinish > 0) {
 239                     if ($quiz->popup) { // need to link to popup window
 240                         $attemptmark = link_to_popup_window ("/mod/quiz/review.php?q=$quiz->id&amp;attempt=$attempt->id", 'quizpopup', round($attempt->sumgrades,$quiz->decimalpoints), '+window.screen.height+', '+window.screen.width+', '', $windowoptions, true);
 241                         $attemptgrade = link_to_popup_window ("/mod/quiz/review.php?q=$quiz->id&amp;attempt=$attempt->id", 'quizpopup', $attemptgrade, '+window.screen.height+', '+window.screen.width+', '', $windowoptions, true);
 242                         $attempt->attempt = link_to_popup_window ("/mod/quiz/review.php?q=$quiz->id&amp;attempt=$attempt->id", 'quizpopup', "#$attempt->attempt", '+window.screen.height+', '+window.screen.width+', '', $windowoptions, true);
 243                     } else {
 244                         $attemptmark = "<a href=\"review.php?q=$quiz->id&amp;attempt=$attempt->id\">".round($attempt->sumgrades,$quiz->decimalpoints).'</a>';
 245                         $attemptgrade = "<a href=\"review.php?q=$quiz->id&amp;attempt=$attempt->id\">$attemptgrade</a>";
 246                         $attempt->attempt = "<a href=\"review.php?q=$quiz->id&amp;attempt=$attempt->id\">#$attempt->attempt</a>";
 247                     }
 248                 }
 249
 250                 if ($quiz->grade <> $quiz->sumgrades) {
 251                     $table->data[] = array( $attempt->attempt,
 252                                             $timetaken,
 253                                             $datecompleted,
 254                                             $attemptmark, $attemptgrade);
 255                 } else {
 256                     $table->data[] = array( $attempt->attempt,
 257                                             $timetaken,
 258                                             $datecompleted,
 259                                             $attemptgrade);
 260                 }
 261             } else {  // No grades are being used
 262                 if (quiz_review_allowed($quiz)) {
 263                     if($attempt->timefinish > 0) {
 264                         $attempt->attempt = "<a href=\"review.php?q=$quiz->id&amp;attempt=$attempt->id\">#$attempt->attempt</a>";
 265                     } else {
 266                         $attempt->attempt = "<a href=\"attempt.php?id=$id\">#$attempt->attempt</a>";
 267                     }
 268                 }
 269                 $table->data[] = array( $attempt->attempt,
 270                                         $timetaken,
 271                                         $datecompleted);
 272             }
 273         }
 274         print_table($table);
 275     }
 276
 277     if (!$quiz->questions) {
 278         print_heading(get_string("noquestions", "quiz"));
 279     } else {
 280         if ($numattempts < $quiz->attempts or !$quiz->attempts) {
 281             if ($available) {
 282                 $options["id"] = $cm->id;
 283                 if ($numattempts and $quiz->grade) {
 284                     print_heading("$strbestgrade: $mygrade / $quiz->grade.");
 285                 }
 286                 $strconfirmstartattempt = addslashes(get_string("confirmstartattempt","quiz"));
 287                 echo "<br />";
 288                 echo "</p>";
 289                 echo "<div align=\"center\">";
 290
 291                 include("view_js.php");
 292
 293                 echo "</div>\n";
 294             }
 295         } else {
 296             print_heading(get_string("nomoreattempts", "quiz"));
 297             if ($quiz->grade) {
 298                 print_heading(get_string("yourfinalgradeis", "quiz", "$mygrade / $quiz->grade"));
 299             }
 300             print_continue('../../course/view.php?id='.$course->id);
 301         }
 302     }
 303 // Finish the page
 304     echo '</td></tr></table>';
 305
 306     print_footer($course);
 307
 308     function quiz_review_allowed($quiz) {
 309         // If not even responses are to be shown in review then we
 310         // don't allow any review
 311         if (!($quiz->review & QUIZ_REVIEW_RESPONSES)) {
 312             return false;
 313         }
 314         if ((time() < $quiz->timeclose) and !($quiz->review & QUIZ_REVIEW_OPEN)) {
 315             return false;
 316         }
 317         if ((time() > $quiz->timeclose) and !($quiz->review & QUIZ_REVIEW_CLOSED)) {
 318             return false;
 319         }
 320         return true;
 321     }
 322
 323 ?>