course/lib.php

   1 <?php  // $Id$
   2    // Library of useful functions
   3
   4
   5 if (defined('COURSE_MAX_LOG_DISPLAY')) {  // Being included again - should never happen!!
   6     return;
   7 }
   8
   9 define('COURSE_MAX_LOG_DISPLAY', 150);       // days
  10
  11 define('COURSE_MAX_LOGS_PER_PAGE', 1000);    // records
  12
  13 define('COURSE_LIVELOG_REFRESH', 60);        // Seconds
  14
  15 define('COURSE_MAX_RECENT_PERIOD', 172800);  // Two days, in seconds
  16
  17 define('COURSE_MAX_SUMMARIES_PER_PAGE', 10); // courses
  18
  19 define('COURSE_MAX_COURSES_PER_DROPDOWN',1000); //  max courses in log dropdown before switching to optional
  20
  21 define('COURSE_MAX_USERS_PER_DROPDOWN',1000); //  max users in log dropdown before switching to optional
  22
  23 define("FRONTPAGENEWS",           0);
  24 define("FRONTPAGECOURSELIST",     1);
  25 define("FRONTPAGECATEGORYNAMES",  2);
  26 define("FRONTPAGETOPICONLY",      3);
  27 define("FRONTPAGECATEGORYCOMBO",  4);
  28
  29 define("FRONTPAGECOURSELIMIT",    200);           // maximum number of courses displayed on the frontpage
  30
  31 function print_recent_selector_form($course, $advancedfilter=0, $selecteduser=0, $selecteddate="lastlogin",
  32                                     $mod="", $modid="activity/All", $modaction="", $selectedgroup="", $selectedsort="default") {
  33
  34     global $USER, $CFG;
  35
  36     $isteacher = isteacher($course->id);
  37     if ($advancedfilter) {
  38
  39         // Get all the possible users
  40         $users = array();
  41
  42         if ($courseusers = get_course_users($course->id, '', '', 'u.id, u.firstname, u.lastname')) {
  43             foreach ($courseusers as $courseuser) {
  44                 $users[$courseuser->id] = fullname($courseuser, $isteacher);
  45             }
  46         }
  47         if ($guest = get_guest()) {
  48             $users[$guest->id] = fullname($guest);
  49         }
  50
  51         if (isadmin()) {
  52             if ($ccc = get_records("course", "", "", "fullname")) {
  53                 foreach ($ccc as $cc) {
  54                     if ($cc->category) {
  55                         $courses["$cc->id"] = "$cc->fullname";
  56                     } else {
  57                         $courses["$cc->id"] = " $cc->fullname (Site)";
  58                     }
  59                 }
  60             }
  61             asort($courses);
  62         }
  63
  64         $activities = array();
  65
  66         $selectedactivity = $modid;
  67
  68         if ($modinfo = unserialize($course->modinfo)) {
  69             $section = 0;
  70             if ($course->format == 'weeks') {  // Body
  71                 $strsection = get_string("week");
  72             } else {
  73                 $strsection = get_string("topic");
  74             }
  75
  76             $activities["activity/All"] = "All activities";
  77             $activities["activity/Assignments"] =  "All assignments";
  78             $activities["activity/Chats"] = "All chats";
  79             $activities["activity/Forums"] = "All forums";
  80             $activities["activity/Quizzes"] = "All quizzes";
  81             $activities["activity/Workshops"] = "All workshops";
  82
  83             $activities["section/individual"] = "------------- Individual Activities --------------";
  84
  85             foreach ($modinfo as $mod) {
  86                 if ($mod->mod == "label") {
  87                     continue;
  88                 }
  89                 if (!$mod->visible and !$isteacher) {
  90                     continue;
  91                 }
  92
  93                 if ($mod->section > 0 and $section <> $mod->section) {
  94                     $activities["section/$mod->section"] = "-------------- $strsection $mod->section --------------";
  95                 }
  96                 $section = $mod->section;
  97                 $mod->name = strip_tags(format_string(urldecode($mod->name),true));
  98                 if (strlen($mod->name) > 55) {
  99                     $mod->name = substr($mod->name, 0, 50)."...";
 100                 }
 101                 if (!$mod->visible) {
 102                     $mod->name = "(".$mod->name.")";
 103                 }
 104                 $activities["$mod->cm"] = $mod->name;
 105
 106                 if ($mod->cm == $modid) {
 107                     $selectedactivity = "$mod->cm";
 108                 }
 109             }
 110         }
 111
 112         $strftimedate = get_string("strftimedate");
 113         $strftimedaydate = get_string("strftimedaydate");
 114
 115         asort($users);
 116
 117         // Get all the possible dates
 118         // Note that we are keeping track of real (GMT) time and user time
 119         // User time is only used in displays - all calcs and passing is GMT
 120
 121         $timenow = time(); // GMT
 122
 123         // What day is it now for the user, and when is midnight that day (in GMT).
 124         $timemidnight = $today = usergetmidnight($timenow);
 125
 126         $dates = array();
 127         $dates["$USER->lastlogin"] = get_string("lastlogin").", ".userdate($USER->lastlogin, $strftimedate);
 128         $dates["$timemidnight"] = get_string("today").", ".userdate($timenow, $strftimedate);
 129
 130         if (!$course->startdate or ($course->startdate > $timenow)) {
 131             $course->startdate = $course->timecreated;
 132         }
 133
 134         $numdates = 1;
 135         while ($timemidnight > $course->startdate and $numdates < 365) {
 136             $timemidnight = $timemidnight - 86400;
 137             $timenow = $timenow - 86400;
 138             $dates["$timemidnight"] = userdate($timenow, $strftimedaydate);
 139             $numdates++;
 140         }
 141
 142         if ($selecteddate === "lastlogin") {
 143             $selecteddate = $USER->lastlogin;
 144         }
 145
 146         echo '<form action="recent.php" method="get">';
 147         echo '<input type="hidden" name="chooserecent" value="1" />';
 148         echo "<center>";
 149         echo "<table>";
 150
 151         if (isadmin()) {
 152             echo "<tr><td><b>" . get_string("courses") . "</b></td><td>";
 153             choose_from_menu ($courses, "id", $course->id, "");
 154             echo "</td></tr>";
 155         } else {
 156             echo '<input type="hidden" name="id" value="'.$course->id.'" />';
 157         }
 158
 159         $sortfields = array("default" => get_string("bycourseorder"),"dateasc" => get_string("datemostrecentlast"), "datedesc" => get_string("datemostrecentfirst"));
 160
 161         echo "<tr><td><b>" . get_string("participants") . "</b></td><td>";
 162         choose_from_menu ($users, "user", $selecteduser, get_string("allparticipants") );
 163         echo "</td>";
 164
 165         echo '<td align="right"><b>' . get_string("since") . '</b></td><td>';
 166         choose_from_menu ($dates, "date", $selecteddate, get_string("alldays"));
 167         echo "</td></tr>";
 168
 169         echo "<tr><td><b>" . get_string("activities") . "</b></td><td>";
 170         choose_from_menu ($activities, "modid", $selectedactivity, "");
 171         echo "</td>";
 172
 173         echo '<td align="right"><b>' . get_string("sortby") . "</b></td><td>";
 174         choose_from_menu ($sortfields, "sortby", $selectedsort, "");
 175         echo "</td></tr>";
 176
 177         echo '<tr>';
 178
 179         $groupmode =  groupmode($course);
 180
 181         if ($groupmode == VISIBLEGROUPS or ($groupmode and isteacheredit($course->id))) {
 182             if ($groups = get_records_menu("groups", "courseid", $course->id, "name ASC", "id,name")) {
 183             echo '<td><b>';
 184                 if ($groupmode == VISIBLEGROUPS) {
 185                     print_string('groupsvisible');
 186                 } else {
 187                     print_string('groupsseparate');
 188                 }
 189                 echo ':</b></td><td>';
 190                 choose_from_menu($groups, "selectedgroup", $selectedgroup, get_string("allgroups"), "", "");
 191                 echo '</td>';
 192             }
 193         }
 194
 195
 196         echo '<td colspan="2" align="right">';
 197         echo '<input type="submit" value="'.get_string('showrecent').'" />';
 198         echo "</td></tr>";
 199
 200         echo "</table>";
 201
 202         $advancedlink = "<a href=\"$CFG->wwwroot/course/recent.php?id=$course->id&amp;advancedfilter=0\">" . get_string("normalfilter") . "</a>";
 203         print_heading($advancedlink);
 204         echo "</center>";
 205         echo "</form>";
 206
 207     } else {
 208
 209         $day_list = array("1","7","14","21","30");
 210         $strsince = get_string("since");
 211         $strlastlogin = get_string("lastlogin");
 212         $strday = get_string("day");
 213         $strdays = get_string("days");
 214
 215         $heading = "";
 216         foreach ($day_list as $count)  {
 217             if ($count == "1") {
 218               $day = $strday;
 219             } else {
 220               $day = $strdays;
 221             }
 222             $tmpdate = time() - ($count * 3600 * 24);
 223             $heading = $heading .
 224                 "<a href=\"$CFG->wwwroot/course/recent.php?id=$course->id&amp;date=$tmpdate\"> $count $day</a> | ";
 225         }
 226
 227         $heading = $strsince . ": <a href=\"$CFG->wwwroot/course/recent.php?id=$course->id\">$strlastlogin</a>" . " | " . $heading;
 228         print_heading($heading);
 229
 230         $advancedlink = "<a href=\"$CFG->wwwroot/course/recent.php?id=$course->id&amp;advancedfilter=1\">" . get_string("advancedfilter") . "</a>";
 231         print_heading($advancedlink);
 232
 233     }
 234
 235 }
 236
 237
 238 function make_log_url($module, $url) {
 239     switch ($module) {
 240         case 'user':
 241         case 'course':
 242         case 'file':
 243         case 'login':
 244         case 'lib':
 245         case 'admin':
 246         case 'message':
 247         case 'calendar':
 248         case 'blog':
 249             return "/$module/$url";
 250             break;
 251         case 'upload':
 252             return $url;
 253             break;
 254         case 'library':
 255         case '':
 256             return '/';
 257             break;
 258         default:
 259             return "/mod/$module/$url";
 260             break;
 261     }
 262 }
 263
 264 function print_log($course, $user=0, $date=0, $order="l.time ASC", $page=0, $perpage=100,
 265                    $url="", $modname="", $modid=0, $modaction="", $groupid=0) {
 266
 267     // It is assumed that $date is the GMT time of midnight for that day,
 268     // and so the next 86400 seconds worth of logs are printed.
 269
 270     global $CFG, $db;
 271
 272     /// Setup for group handling.
 273     $isteacher = isteacher($course->id);
 274     $isteacheredit = isteacheredit($course->id);
 275
 276     /// If the group mode is separate, and this user does not have editing privileges,
 277     /// then only the user's group can be viewed.
 278     if ($course->groupmode == SEPARATEGROUPS and !$isteacheredit) {
 279         $groupid = get_current_group($course->id);
 280     }
 281     /// If this course doesn't have groups, no groupid can be specified.
 282     else if (!$course->groupmode) {
 283         $groupid = 0;
 284     }
 285
 286     $joins = array();
 287
 288     if ($course->id != SITEID || $modid != 0) {
 289         $joins[] = "l.course='$course->id'";
 290     }
 291     if ($course->id == SITEID) {
 292         $courses[0] = '';
 293         if ($ccc = get_courses('all', 'c.id ASC', 'c.id,c.shortname')) {
 294             foreach ($ccc as $cc) {
 295                 $courses[$cc->id] = $cc->shortname;
 296             }
 297         }
 298     }
 299
 300     if ($modname) {
 301         $joins[] = "l.module = '$modname'";
 302     }
 303
 304     if ('site_errors' === $modid) {
 305         $joins[] = "( l.action='error' OR l.action='infected' )";
 306     } else if ($modid) {
 307         $joins[] = "l.cmid = '$modid'";
 308     }
 309
 310     if ($modaction) {
 311         $firstletter = substr($modaction, 0, 1);
 312         if (ctype_alpha($firstletter)) {
 313             $joins[] = "lower(l.action) LIKE '%" . strtolower($modaction) . "%'";
 314         } else if ($firstletter == '-') {
 315             $joins[] = "lower(l.action) NOT LIKE '%" . strtolower(substr($modaction, 1)) . "%'";
 316         }
 317     }
 318
 319     /// Getting all members of a group.
 320     if ($groupid and !$user) {
 321         if ($gusers = get_records('groups_members', 'groupid', $groupid)) {
 322             $first = true;
 323             foreach($gusers as $guser) {
 324                 if ($first) {
 325                     $gselect = '(l.userid='.$guser->userid;
 326                     $first = false;
 327                 }
 328                 else {
 329                     $gselect .= ' OR l.userid='.$guser->userid;
 330                 }
 331             }
 332             if (!$first) $gselect .= ')';
 333             $joins[] = $gselect;
 334         }
 335     }
 336     else if ($user) {
 337         $joins[] = "l.userid = '$user'";
 338     }
 339
 340     if ($date) {
 341         $enddate = $date + 86400;
 342         $joins[] = "l.time > '$date' AND l.time < '$enddate'";
 343     }
 344
 345     $selector = '';
 346     for ($i = 0; $i < count($joins); $i++) {
 347         $selector .= $joins[$i] . (($i == count($joins)-1) ? " " : " AND ");
 348     }
 349
 350
 351     $totalcount = 0;  // Initialise
 352
 353     if (!$logs = get_logs($selector, $order, $page*$perpage, $perpage, $totalcount)) {
 354         notify("No logs found!");
 355         print_footer($course);
 356         exit;
 357     }
 358
 359     $count=0;
 360     $ldcache = array();
 361     $tt = getdate(time());
 362     $today = mktime (0, 0, 0, $tt["mon"], $tt["mday"], $tt["year"]);
 363
 364     $strftimedatetime = get_string("strftimedatetime");
 365     $isteacher = isteacher($course->id);
 366
 367     echo "<p align=\"center\">\n";
 368     print_string("displayingrecords", "", $totalcount);
 369     echo "</p>\n";
 370
 371
 372     print_paging_bar($totalcount, $page, $perpage, "$url&amp;perpage=$perpage&amp;");
 373
 374     echo "<table class=\"logtable\" border=\"0\" align=\"center\" cellpadding=\"3\" cellspacing=\"0\">\n";
 375     echo "<tr>";
 376     if ($course->id == SITEID) {
 377         echo "<th class=\"c0 header\">".get_string('course')."</th>\n";
 378     }
 379     echo "<th class=\"c1 header\">".get_string('time')."</th>\n";
 380     echo "<th class=\"c2 header\">".get_string('ip_address')."</th>\n";
 381     echo "<th class=\"c3 header\">".get_string('fullname')."</th>\n";
 382     echo "<th class=\"c4 header\">".get_string('action')."</th>\n";
 383     echo "<th class=\"c5 header\">".get_string('info')."</th>\n";
 384     echo "</tr>\n";
 385
 386     $row = 1;
 387     foreach ($logs as $log) {
 388
 389         $row = ($row + 1) % 2;
 390
 391         if (isset($ldcache[$log->module][$log->action])) {
 392             $ld = $ldcache[$log->module][$log->action];
 393         } else {
 394             $ld = get_record('log_display', 'module', $log->module, 'action', $log->action);
 395             $ldcache[$log->module][$log->action] = $ld;
 396         }
 397         if ($ld && !empty($log->info)) {
 398             // ugly hack to make sure fullname is shown correctly
 399             if (($ld->mtable == 'user') and ($ld->field == 'CONCAT(firstname," ",lastname)')) {
 400                 $log->info = fullname(get_record($ld->mtable, 'id', $log->info), true);
 401             } else {
 402                 $log->info = get_field($ld->mtable, $ld->field, 'id', $log->info);
 403             }
 404         }
 405
 406         //Filter log->info
 407         $log->info = format_string($log->info);
 408
 409         $log->url  = strip_tags(urldecode($log->url));   // Some XSS protection
 410         $log->info = strip_tags(urldecode($log->info));  // Some XSS protection
 411         $log->url  = str_replace('&', '&amp;', $log->url); /// XHTML compatibility
 412
 413         echo '<tr class="r'.$row.'">';
 414         if ($course->id == SITEID) {
 415             echo "<td class=\"r$row c0\" nowrap=\"nowrap\">\n";
 416             echo "    <a href=\"{$CFG->wwwroot}/course/view.php?id={$log->course}\">".$courses[$log->course]."</a>\n";
 417             echo "</td>\n";
 418         }
 419         echo "<td class=\"r$row c1\" nowrap=\"nowrap\" align=\"right\">".userdate($log->time, '%a').
 420              ' '.userdate($log->time, $strftimedatetime)."</td>\n";
 421         echo "<td class=\"r$row c2\" nowrap=\"nowrap\">\n";
 422         link_to_popup_window("/iplookup/index.php?ip=$log->ip&amp;user=$log->userid", 'iplookup',$log->ip, 400, 700);
 423         echo "</td>\n";
 424         $fullname = fullname($log, $isteacher);
 425         echo "<td class=\"r$row c3\" nowrap=\"nowrap\">\n";
 426         echo "    <a href=\"$CFG->wwwroot/user/view.php?id={$log->userid}&amp;course={$log->course}\">$fullname</a>\n";
 427         echo "</td>\n";
 428         echo "<td class=\"r$row c4\" nowrap=\"nowrap\">\n";
 429         link_to_popup_window( make_log_url($log->module,$log->url), 'fromloglive',"$log->module $log->action", 400, 600);
 430         echo "</td>\n";;
 431         echo "<td class=\"r$row c5\" nowrap=\"nowrap\">{$log->info}</td>\n";
 432         echo "</tr>\n";
 433     }
 434     echo "</table>\n";
 435
 436     print_paging_bar($totalcount, $page, $perpage, "$url&amp;perpage=$perpage&amp;");
 437 }
 438
 439
 440 function print_log_graph($course, $userid=0, $type="course.png", $date=0) {
 441     global $CFG;
 442     if (empty($CFG->gdversion)) {
 443         echo "(".get_string("gdneed").")";
 444     } else {
 445         echo '<img src="'.$CFG->wwwroot.'/course/report/log/graph.php?id='.$course->id.
 446              '&amp;user='.$userid.'&amp;type='.$type.'&amp;date='.$date.'" alt="" />';
 447     }
 448 }
 449
 450
 451 function print_overview($courses) {
 452
 453     global $CFG, $USER;
 454
 455
 456     $htmlarray = array();
 457     if ($modules = get_records('modules')) {
 458         foreach ($modules as $mod) {
 459             if (file_exists(dirname(dirname(__FILE__)).'/mod/'.$mod->name.'/lib.php')) {
 460                 require_once(dirname(dirname(__FILE__)).'/mod/'.$mod->name.'/lib.php');
 461                 $fname = $mod->name.'_print_overview';
 462                 if (function_exists($fname)) {
 463                     $fname($courses,$htmlarray);
 464                 }
 465             }
 466         }
 467     }
 468
 469     foreach ($courses as $course) {
 470         print_simple_box_start('center', '100%', '', 5, "coursebox");
 471         $linkcss = '';
 472         if (empty($course->visible)) {
 473             $linkcss = 'class="dimmed"';
 474         }
 475         print_heading('<a title="'.$course->fullname.'" '.$linkcss.' href="'.$CFG->wwwroot.'/course/view.php?id='.$course->id.'">'.$course->fullname.'</a>');
 476         if (array_key_exists($course->id,$htmlarray)) {
 477             foreach ($htmlarray[$course->id] as $modname => $html) {
 478                 echo $html;
 479             }
 480         }
 481         print_simple_box_end();
 482     }
 483 }
 484
 485
 486
 487 function print_recent_activity($course) {
 488     // $course is an object
 489     // This function trawls through the logs looking for
 490     // anything new since the user's last login
 491
 492     global $CFG, $USER, $SESSION;
 493
 494     $isteacher = isteacher($course->id);
 495
 496     $timestart = time() - COURSE_MAX_RECENT_PERIOD;
 497
 498     if (!empty($USER->timeaccess[$course->id])) {
 499         if ($USER->timeaccess[$course->id] > $timestart) {
 500             $timestart = $USER->timeaccess[$course->id];
 501         }
 502     }
 503
 504     echo '<div class="activitydate">';
 505     echo get_string('activitysince', '', userdate($timestart));
 506     echo '</div>';
 507     echo '<div class="activityhead">';
 508
 509     echo '<a href="'.$CFG->wwwroot.'/course/recent.php?id='.$course->id.'">'.get_string('recentactivityreport').'</a>';
 510
 511     echo "</div>\n";
 512
 513
 514     // Firstly, have there been any new enrolments?
 515
 516     $heading = false;
 517     $content = false;
 518
 519     $users = get_recent_enrolments($course->id, $timestart);
 520
 521     //Accessibility: new users now appear in an <OL> list.
 522     if ($users) {
 523         echo '<div class="newusers">';
 524         if (! $heading) {
 525             print_headline(get_string("newusers").':', 3);
 526             $heading = true;
 527             $content = true;
 528         }
 529         echo "<ol class=\"list\">\n";
 530         foreach ($users as $user) {
 531
 532             $fullname = fullname($user, $isteacher);
 533             echo '<li class="name"><a href="'.$CFG->wwwroot."/user/view.php?id=$user->id&amp;course=$course->id\">$fullname</a></li>\n";
 534         }
 535         echo "</ol>\n</div>\n";
 536     }
 537
 538     // Next, have there been any modifications to the course structure?
 539
 540     $logs = get_records_select('log', "time > '$timestart' AND course = '$course->id' AND
 541                                        module = 'course' AND action LIKE '% mod'", "time ASC");
 542
 543     if ($logs) {
 544         foreach ($logs as $key => $log) {
 545             $info = split(' ', $log->info);
 546
 547             if ($info[0] == 'label') {     // Labels are special activities
 548                 continue;
 549             }
 550
 551             $modname = get_field($info[0], 'name', 'id', $info[1]);
 552             //Create a temp valid module structure (course,id)
 553             $tempmod->course = $log->course;
 554             $tempmod->id = $info[1];
 555             //Obtain the visible property from the instance
 556             $modvisible = instance_is_visible($info[0],$tempmod);
 557
 558             //Only if the mod is visible
 559             if ($modvisible) {
 560                 switch ($log->action) {
 561                     case 'add mod':
 562                         $stradded = get_string('added', 'moodle', get_string('modulename', $info[0]));
 563                         $changelist[$log->info] = array ('operation' => 'add', 'text' => "$stradded:<br /><a href=\"$CFG->wwwroot/course/$log->url\">".format_string($modname,true)."</a>");
 564                     break;
 565                     case 'update mod':
 566                        $strupdated = get_string('updated', 'moodle', get_string('modulename', $info[0]));
 567                        if (empty($changelist[$log->info])) {
 568                            $changelist[$log->info] = array ('operation' => 'update', 'text' => "$strupdated:<br /><a href=\"$CFG->wwwroot/course/$log->url\">".format_string($modname,true)."</a>");
 569                        }
 570                     break;
 571                     case 'delete mod':
 572                        if (!empty($changelist[$log->info]['operation']) and
 573                                   $changelist[$log->info]['operation'] == 'add') {
 574                            $changelist[$log->info] = NULL;
 575                        } else {
 576                            $strdeleted = get_string('deletedactivity', 'moodle', get_string('modulename', $info[0]));
 577                            $changelist[$log->info] = array ('operation' => 'delete', 'text' => $strdeleted);
 578                        }
 579                     break;
 580                 }
 581             }
 582         }
 583     }
 584
 585     if (!empty($changelist)) {
 586         foreach ($changelist as $changeinfo => $change) {
 587             if ($change) {
 588                 $changes[$changeinfo] = $change;
 589             }
 590         }
 591         if (isset($changes)){
 592             if (count($changes) > 0) {
 593                 print_headline(get_string('courseupdates').':', 3);
 594                 $content = true;
 595                 foreach ($changes as $changeinfo => $change) {
 596                     echo '<p class="activity">'.$change['text'].'</p>';
 597                 }
 598             }
 599         }
 600     }
 601
 602     // Now display new things from each module
 603
 604     $mods = get_records('modules', 'visible', '1', 'name', 'id, name');
 605
 606     foreach ($mods as $mod) {      // Each module gets it's own logs and prints them
 607         include_once($CFG->dirroot.'/mod/'.$mod->name.'/lib.php');
 608         $print_recent_activity = $mod->name.'_print_recent_activity';
 609         if (function_exists($print_recent_activity)) {
 610             $modcontent = $print_recent_activity($course, $isteacher, $timestart);
 611             if ($modcontent) {
 612                 $content = true;
 613             }
 614         }
 615     }
 616
 617     if (! $content) {
 618         echo '<p class="message">'.get_string('nothingnew').'</p>';
 619     }
 620 }
 621
 622
 623 function get_array_of_activities($courseid) {
 624 // For a given course, returns an array of course activity objects
 625 // Each item in the array contains he following properties:
 626 //  cm - course module id
 627 //  mod - name of the module (eg forum)
 628 //  section - the number of the section (eg week or topic)
 629 //  name - the name of the instance
 630 //  visible - is the instance visible or not
 631 //  extra - contains extra string to include in any link
 632
 633     global $CFG;
 634
 635     $mod = array();
 636
 637     if (!$rawmods = get_course_mods($courseid)) {
 638         return NULL;
 639     }
 640
 641     if ($sections = get_records("course_sections", "course", $courseid, "section ASC")) {
 642        foreach ($sections as $section) {
 643            if (!empty($section->sequence)) {
 644                $sequence = explode(",", $section->sequence);
 645                foreach ($sequence as $seq) {
 646                    if (empty($rawmods[$seq])) {
 647                        continue;
 648                    }
 649                    $mod[$seq]->cm = $rawmods[$seq]->id;
 650                    $mod[$seq]->mod = $rawmods[$seq]->modname;
 651                    $mod[$seq]->section = $section->section;
 652                    $mod[$seq]->name = urlencode(get_field($rawmods[$seq]->modname, "name", "id", $rawmods[$seq]->instance));
 653                    $mod[$seq]->visible = $rawmods[$seq]->visible;
 654                    $mod[$seq]->extra = "";
 655
 656                    $modname = $mod[$seq]->mod;
 657                    $functionname = $modname."_get_coursemodule_info";
 658
 659                    include_once("$CFG->dirroot/mod/$modname/lib.php");
 660
 661                    if (function_exists($functionname)) {
 662                        if ($info = $functionname($rawmods[$seq])) {
 663                            if (!empty($info->extra)) {
 664                                $mod[$seq]->extra = $info->extra;
 665                            }
 666                            if (!empty($info->icon)) {
 667                                $mod[$seq]->icon = $info->icon;
 668                            }
 669                        }
 670                    }
 671                }
 672             }
 673         }
 674     }
 675     return $mod;
 676 }
 677
 678
 679
 680
 681 function get_all_mods($courseid, &$mods, &$modnames, &$modnamesplural, &$modnamesused) {
 682 // Returns a number of useful structures for course displays
 683
 684     $mods          = NULL;    // course modules indexed by id
 685     $modnames      = NULL;    // all course module names (except resource!)
 686     $modnamesplural= NULL;    // all course module names (plural form)
 687     $modnamesused  = NULL;    // course module names used
 688
 689     if ($allmods = get_records("modules")) {
 690         foreach ($allmods as $mod) {
 691             if ($mod->visible) {
 692                 $modnames[$mod->name] = get_string("modulename", "$mod->name");
 693                 $modnamesplural[$mod->name] = get_string("modulenameplural", "$mod->name");
 694             }
 695         }
 696         asort($modnames);
 697     } else {
 698         error("No modules are installed!");
 699     }
 700
 701     if ($rawmods = get_course_mods($courseid)) {
 702         foreach($rawmods as $mod) {    // Index the mods
 703             if (empty($modnames[$mod->modname])) {
 704                 continue;
 705             }
 706             $mods[$mod->id] = $mod;
 707             $mods[$mod->id]->modfullname = $modnames[$mod->modname];
 708             if ($mod->visible or isteacher($courseid)) {
 709                 $modnamesused[$mod->modname] = $modnames[$mod->modname];
 710             }
 711         }
 712         if ($modnamesused) {
 713             asort($modnamesused);
 714         }
 715     }
 716
 717     unset($modnames['resource']);
 718     unset($modnames['label']);
 719 }
 720
 721
 722 function get_all_sections($courseid) {
 723
 724     return get_records("course_sections", "course", "$courseid", "section",
 725                        "section, id, course, summary, sequence, visible");
 726 }
 727
 728 function course_set_display($courseid, $display=0) {
 729     global $USER;
 730
 731     if (empty($USER->id)) {
 732         return false;
 733     }
 734
 735     if ($display == "all" or empty($display)) {
 736         $display = 0;
 737     }
 738
 739     if (record_exists("course_display", "userid", $USER->id, "course", $courseid)) {
 740         set_field("course_display", "display", $display, "userid", $USER->id, "course", $courseid);
 741     } else {
 742         $record->userid = $USER->id;
 743         $record->course = $courseid;
 744         $record->display = $display;
 745         if (!insert_record("course_display", $record)) {
 746             notify("Could not save your course display!");
 747         }
 748     }
 749
 750     return $USER->display[$courseid] = $display;  // Note: = not ==
 751 }
 752
 753 function set_section_visible($courseid, $sectionnumber, $visibility) {
 754 /// For a given course section, markes it visible or hidden,
 755 /// and does the same for every activity in that section
 756
 757     if ($section = get_record("course_sections", "course", $courseid, "section", $sectionnumber)) {
 758         set_field("course_sections", "visible", "$visibility", "id", $section->id);
 759         if (!empty($section->sequence)) {
 760             $modules = explode(",", $section->sequence);
 761             foreach ($modules as $moduleid) {
 762                 set_coursemodule_visible($moduleid, $visibility, true);
 763             }
 764         }
 765         rebuild_course_cache($courseid);
 766     }
 767 }
 768
 769
 770 function print_section($course, $section, $mods, $modnamesused, $absolute=false, $width="100%") {
 771 /// Prints a section full of activity modules
 772     global $CFG, $USER;
 773
 774     static $groupbuttons;
 775     static $groupbuttonslink;
 776     static $isteacher;
 777     static $isediting;
 778     static $ismoving;
 779     static $strmovehere;
 780     static $strmovefull;
 781     static $strunreadpostsone;
 782
 783     static $untracked;
 784     static $usetracking;
 785
 786     $labelformatoptions = New stdClass;
 787
 788     if (!isset($isteacher)) {
 789         $groupbuttons     = ($course->groupmode or (!$course->groupmodeforce));
 790         $groupbuttonslink = (!$course->groupmodeforce);
 791         $isteacher = isteacher($course->id);
 792         $isediting = isediting($course->id);
 793         $ismoving = $isediting && ismoving($course->id);
 794         if ($ismoving) {
 795             $strmovehere = get_string("movehere");
 796             $strmovefull = strip_tags(get_string("movefull", "", "'$USER->activitycopyname'"));
 797         }
 798         include_once($CFG->dirroot.'/mod/forum/lib.php');
 799         if ($usetracking = forum_tp_can_track_forums()) {
 800             $strunreadpostsone    = get_string('unreadpostsone', 'forum');
 801             $untracked = forum_tp_get_untracked_forums($USER->id, $course->id);
 802         }
 803     }
 804     $labelformatoptions->noclean = true;
 805
 806     $modinfo = unserialize($course->modinfo);
 807
 808     //Acccessibility: replace table with list <ul>, but don't output empty list.
 809     if (!empty($section->sequence)) {
 810
 811         // Fix bug #5027, don't want style=\"width:$width\".
 812         echo "<ul class=\"section\">\n";
 813         $sectionmods = explode(",", $section->sequence);
 814
 815         foreach ($sectionmods as $modnumber) {
 816             if (empty($mods[$modnumber])) {
 817                 continue;
 818             }
 819             $mod = $mods[$modnumber];
 820
 821             if ($mod->visible or $isteacher) {
 822                 echo '<li class="activity '.$mod->modname.'">';
 823                 if ($ismoving) {
 824                     if ($mod->id == $USER->activitycopy) {
 825                         continue;
 826                     }
 827                     echo '<a title="'.$strmovefull.'"'.
 828                          ' href="'.$CFG->wwwroot.'/course/mod.php?moveto='.$mod->id.'&amp;sesskey='.$USER->sesskey.'">'.
 829                          '<img class="movetarget" src="'.$CFG->pixpath.'/movehere.gif" '.
 830                          ' alt="'.$strmovehere.'" /></a><br />
 831                          ';
 832                 }
 833                 $instancename = urldecode($modinfo[$modnumber]->name);
 834                     $instancename = format_string($instancename, true,  $course->id);
 835
 836                 if (!empty($modinfo[$modnumber]->extra)) {
 837                     $extra = urldecode($modinfo[$modnumber]->extra);
 838                 } else {
 839                     $extra = "";
 840                 }
 841
 842                 if (!empty($modinfo[$modnumber]->icon)) {
 843                     $icon = "$CFG->pixpath/".urldecode($modinfo[$modnumber]->icon);
 844                 } else {
 845                     $icon = "$CFG->modpixpath/$mod->modname/icon.gif";
 846                 }
 847
 848                 if ($mod->indent) {
 849                     print_spacer(12, 20 * $mod->indent, false);
 850                 }
 851
 852                 if ($mod->modname == "label") {
 853                     if (!$mod->visible) {
 854                         echo "<span class=\"dimmed_text\">";
 855                     }
 856                     echo format_text($extra, FORMAT_HTML, $labelformatoptions);
 857                     if (!$mod->visible) {
 858                         echo "</span>";
 859                     }
 860
 861                 } else { // Normal activity
 862                     $linkcss = $mod->visible ? "" : " class=\"dimmed\" ";
 863                     echo '<img src="'.$icon.'"'.
 864                          ' class="activityicon" alt="'.$mod->modfullname.'" />'.
 865                          ' <a title="'.$mod->modfullname.'" '.$linkcss.' '.$extra.
 866                          ' href="'.$CFG->wwwroot.'/mod/'.$mod->modname.'/view.php?id='.$mod->id.'">'.
 867                          $instancename.'</a>';
 868                 }
 869                 if ($usetracking && $mod->modname == 'forum') {
 870                     $groupmode = groupmode($course, $mod);
 871                     $groupid = ($groupmode == SEPARATEGROUPS && !isteacheredit($course->id)) ?
 872                                get_current_group($course->id) : false;
 873
 874                     if (forum_tp_can_track_forums() && !isset($untracked[$mod->instance])) {
 875                         $unread = forum_tp_count_forum_unread_posts($USER->id, $mod->instance, $groupid);
 876                         if ($unread) {
 877                             echo '<span class="unread"> <a href="'.$CFG->wwwroot.'/mod/forum/view.php?id='.$mod->id.'">';
 878                             if ($unread == 1) {
 879                                 echo $strunreadpostsone;
 880                             } else {
 881                                 print_string('unreadpostsnumber', 'forum', $unread);
 882                             }
 883                             echo '</a> </span>';
 884                         }
 885                     }
 886                 }
 887
 888                 if ($isediting) {
 889                     if ($groupbuttons and $mod->modname != 'label' and $mod->modname != 'resource') {
 890                         if (! $mod->groupmodelink = $groupbuttonslink) {
 891                             $mod->groupmode = $course->groupmode;
 892                         }
 893
 894                     } else {
 895                         $mod->groupmode = false;
 896                     }
 897                     echo '&nbsp;&nbsp;';
 898                     echo make_editing_buttons($mod, $absolute, true, $mod->indent, $section->section);
 899                 }
 900                 echo "</li>\n";
 901             }
 902         }
 903     } elseif ($ismoving) {
 904         echo "<ul class=\"section\">\n";
 905     }
 906     if ($ismoving) {
 907         echo '<li><a title="'.$strmovefull.'"'.
 908              ' href="'.$CFG->wwwroot.'/course/mod.php?movetosection='.$section->id.'&amp;sesskey='.$USER->sesskey.'">'.
 909              '<img class="movetarget" src="'.$CFG->pixpath.'/movehere.gif" '.
 910              ' alt="'.$strmovehere.'" /></a></li>
 911              ';
 912     }
 913     if (!empty($section->sequence) || $ismoving) {
 914         echo "</ul><!--class='section'-->\n\n";
 915     }
 916 }
 917
 918
 919 function print_section_add_menus($course, $section, $modnames, $vertical=false, $return=false) {
 920 // Prints the menus to add activities and resources
 921
 922     global $CFG, $USER;
 923     static $straddactivity, $stractivities, $straddresource, $resources;
 924
 925     if (!isset($straddactivity)) {
 926         $straddactivity = get_string('addactivity');
 927         $straddresource = get_string('addresource');
 928
 929         /// Standard resource types
 930         require_once("$CFG->dirroot/mod/resource/lib.php");
 931         $resourceraw = resource_get_resource_types();
 932
 933         foreach ($resourceraw as $type => $name) {
 934             $resources["resource&amp;type=$type"] = $name;
 935         }
 936         if (course_allowed_module($course,'label')) {
 937             $resources['label'] = get_string('resourcetypelabel', 'resource');
 938         }
 939     }
 940
 941     $output  = '<div style="text-align: right">';
 942     if (course_allowed_module($course,'resource')) {
 943         $resourceallowed = true;
 944         $output .= popup_form("$CFG->wwwroot/course/mod.php?id=$course->id&amp;section=$section&amp;sesskey=$USER->sesskey&amp;add=",
 945                               $resources, "ressection$section", "", $straddresource, 'resource/types', $straddresource, true);
 946     }
 947
 948     if ($vertical) {
 949         $output .= '<div>';
 950     }
 951
 952     // we need to loop through the forms and check to see if we can add them.
 953     foreach ($modnames as $key=>$value) {
 954         if (!course_allowed_module($course,$key))
 955             unset($modnames[$key]);
 956     }
 957
 958     // this is stupid but labels get put into resource, so if resource is hidden and label is not, we're in trouble.
 959     if (course_allowed_module($course,'label') && empty($resourceallowed)) {
 960         $modnames['label'] = get_string('modulename', 'label');
 961     }
 962
 963     $output .= ' ';
 964     $output .= popup_form("$CFG->wwwroot/course/mod.php?id=$course->id&amp;section=$section&amp;sesskey=$USER->sesskey&amp;add=",
 965                 $modnames, "section$section", "", $straddactivity, 'mods', $straddactivity, true);
 966
 967     if ($vertical) {
 968         $output .= '</div>';
 969     }
 970
 971     $output .= '</div>';
 972
 973     if ($return) {
 974         return $output;
 975     } else {
 976         echo $output;
 977     }
 978 }
 979
 980 function rebuild_course_cache($courseid=0) {
 981 // Rebuilds the cached list of course activities stored in the database
 982 // If a courseid is not specified, then all are rebuilt
 983
 984     if ($courseid) {
 985         $select = "id = '$courseid'";
 986     } else {
 987         $select = "";
 988     }
 989
 990     if ($courses = get_records_select("course", $select,'','id,fullname')) {
 991         foreach ($courses as $course) {
 992             $modinfo = serialize(get_array_of_activities($course->id));
 993             if (!set_field("course", "modinfo", $modinfo, "id", $course->id)) {
 994                 notify("Could not cache module information for course '$course->fullname'!");
 995             }
 996         }
 997     }
 998 }
 999
1000
1001
1002 function make_categories_list(&$list, &$parents, $category=NULL, $path="") {
1003 /// Given an empty array, this function recursively travels the
1004 /// categories, building up a nice list for display.  It also makes
1005 /// an array that list all the parents for each category.
1006
1007     // initialize the arrays if needed
1008     if (!is_array($list)) {
1009         $list = array();
1010     }
1011     if (!is_array($parents)) {
1012         $parents = array();
1013     }
1014
1015     if ($category) {
1016         if ($path) {
1017             $path = $path.' / '.$category->name;
1018         } else {
1019             $path = $category->name;
1020         }
1021         $list[$category->id] = $path;
1022     } else {
1023         $category->id = 0;
1024     }
1025
1026     if ($categories = get_categories($category->id)) {   // Print all the children recursively
1027         foreach ($categories as $cat) {
1028             if (!empty($category->id)) {
1029                 if (isset($parents[$category->id])) {
1030                     $parents[$cat->id]   = $parents[$category->id];
1031                 }
1032                 $parents[$cat->id][] = $category->id;
1033             }
1034             make_categories_list($list, $parents, $cat, $path);
1035         }
1036     }
1037 }
1038
1039
1040 function print_whole_category_list($category=NULL, $displaylist=NULL, $parentslist=NULL, $depth=-1, $files = true) {
1041 /// Recursive function to print out all the categories in a nice format
1042 /// with or without courses included
1043     global $CFG;
1044
1045     if (isset($CFG->max_category_depth) && ($depth >= $CFG->max_category_depth)) {
1046         return;
1047     }
1048
1049     if (!$displaylist) {
1050         make_categories_list($displaylist, $parentslist);
1051     }
1052
1053     if ($category) {
1054         if ($category->visible or iscreator()) {
1055             print_category_info($category, $depth, $files);
1056         } else {
1057             return;  // Don't bother printing children of invisible categories
1058         }
1059
1060     } else {
1061         $category->id = "0";
1062     }
1063
1064     if ($categories = get_categories($category->id)) {   // Print all the children recursively
1065         $countcats = count($categories);
1066         $count = 0;
1067         $first = true;
1068         $last = false;
1069         foreach ($categories as $cat) {
1070             $count++;
1071             if ($count == $countcats) {
1072                 $last = true;
1073             }
1074             $up = $first ? false : true;
1075             $down = $last ? false : true;
1076             $first = false;
1077
1078             print_whole_category_list($cat, $displaylist, $parentslist, $depth + 1, $files);
1079         }
1080     }
1081 }
1082
1083 // this function will return $options array for choose_from_menu, with whitespace to denote nesting.
1084
1085 function make_categories_options() {
1086     make_categories_list($cats,$parents);
1087     foreach ($cats as $key => $value) {
1088         if (array_key_exists($key,$parents)) {
1089             if ($indent = count($parents[$key])) {
1090                 for ($i = 0; $i < $indent; $i++) {
1091                     $cats[$key] = '&nbsp;'.$cats[$key];
1092                 }
1093             }
1094         }
1095     }
1096     return $cats;
1097 }
1098
1099 function print_category_info($category, $depth, $files = false) {
1100 /// Prints the category info in indented fashion
1101 /// This function is only used by print_whole_category_list() above
1102
1103     global $CFG;
1104     static $strallowguests, $strrequireskey, $strsummary;
1105
1106     if (empty($strsummary)) {
1107         $strallowguests = get_string('allowguests');
1108         $strrequireskey = get_string('requireskey');
1109         $strsummary = get_string('summary');
1110     }
1111
1112     $catlinkcss = $category->visible ? '' : ' class="dimmed" ';
1113
1114     $coursecount = count_records('course') <= FRONTPAGECOURSELIMIT;
1115     if ($files and $coursecount) {
1116         $catimage = '<img src="'.$CFG->pixpath.'/i/course.gif" width="16" height="16" border="0" alt="" />';
1117     } else {
1118         $catimage = "&nbsp;";
1119     }
1120
1121     echo "\n\n".'<table border="0" cellpadding="3" cellspacing="0" width="100%">';
1122
1123     if ($files and $coursecount) {
1124         $courses = get_courses($category->id, 'c.sortorder ASC', 'c.id,c.sortorder,c.visible,c.fullname,c.shortname,c.password,c.summary,c.guest,c.cost,c.currency');
1125
1126         echo "<tr>";
1127
1128         if ($depth) {
1129             $indent = $depth*30;
1130             $rows = count($courses) + 1;
1131             echo '<td rowspan="'.$rows.'" valign="top" width="'.$indent.'">';
1132             print_spacer(10, $indent);
1133             echo '</td>';
1134         }
1135
1136         echo '<td valign="top">'.$catimage.'</td>';
1137         echo '<td valign="top" width="100%" class="category name">';
1138         echo '<a '.$catlinkcss.' href="'.$CFG->wwwroot.'/course/category.php?id='.$category->id.'">'.$category->name.'</a>';
1139         echo '</td>';
1140         echo '<td class="category info">&nbsp;</td>';
1141         echo '</tr>';
1142
1143         if ($courses && !(isset($CFG->max_category_depth)&&($depth>=$CFG->max_category_depth-1))) {
1144             foreach ($courses as $course) {
1145                 $linkcss = $course->visible ? '' : ' class="dimmed" ';
1146                 echo '<tr><td valign="top" width="30">&nbsp;';
1147                 echo '</td><td valign="top" width="100%" class="course name">';
1148                 echo '<a '.$linkcss.' href="'.$CFG->wwwroot.'/course/view.php?id='.$course->id.'">'.$course->fullname.'</a>';
1149                 echo '</td><td align="right" valign="top" nowrap="nowrap" class="course info">';
1150                 if ($course->guest ) {
1151                     echo '<a title="'.$strallowguests.'" href="'.$CFG->wwwroot.'/course/view.php?id='.$course->id.'">';
1152                     echo '<img hspace="1" alt="'.$strallowguests.'" height="16" width="16" border="0" src="'.$CFG->pixpath.'/i/guest.gif" /></a>';
1153                 } else {
1154                     echo '<img alt="" height="16" width="18" border="0" src="'.$CFG->pixpath.'/spacer.gif" />';
1155                 }
1156                 if ($course->password) {
1157                     echo '<a title="'.$strrequireskey.'" href="'.$CFG->wwwroot.'/course/view.php?id='.$course->id.'">';
1158                     echo '<img hspace="1" alt="'.$strrequireskey.'" height="16" width="16" border="0" src="'.$CFG->pixpath.'/i/key.gif" /></a>';
1159                 } else {
1160                     echo '<img alt="" height="16" width="18" border="0" src="'.$CFG->pixpath.'/spacer.gif" />';
1161                 }
1162                 if ($course->summary) {
1163                     link_to_popup_window ('/course/info.php?id='.$course->id, 'courseinfo',
1164                                           '<img hspace="1" alt="'.$strsummary.'" height="16" width="16" border="0" src="'.$CFG->pixpath.'/i/info.gif" />',
1165                                            400, 500, $strsummary);
1166                 } else {
1167                     echo '<img alt="" height="16" width="18" border="0" src="'.$CFG->pixpath.'/spacer.gif" />';
1168                 }
1169                 echo '</td></tr>';
1170             }
1171         }
1172     } else {
1173
1174         echo '<tr>';
1175
1176         if ($depth) {
1177             $indent = $depth*20;
1178             echo '<td valign="top" width="'.$indent.'">';
1179             print_spacer(10, $indent);
1180             echo '</td>';
1181         }
1182
1183         echo '<td valign="top" width="100%" class="category name">';
1184         echo '<a '.$catlinkcss.' href="'.$CFG->wwwroot.'/course/category.php?id='.$category->id.'">'.$category->name.'</a>';
1185         echo '</td>';
1186         echo '<td valign="top" class="category number">';
1187         if ($category->coursecount) {
1188             echo $category->coursecount;
1189         }
1190         echo '</td></tr>';
1191     }
1192     echo '</table>';
1193 }
1194
1195
1196 function print_courses($category, $width="100%", $hidesitecourse = false) {
1197 /// Category is 0 (for all courses) or an object
1198
1199     global $CFG;
1200
1201     if (empty($category)) {
1202         $categories = get_categories(0);  // Parent = 0   ie top-level categories only
1203         if (count($categories) == 1) {
1204             $category   = array_shift($categories);
1205             $courses    = get_courses($category->id, 'c.sortorder ASC', 'c.id,c.category,c.sortorder,c.visible,c.fullname,c.shortname,c.password,c.summary,c.teacher,c.cost,c.currency,c.enrol,c.guest');
1206         } else {
1207             $courses    = get_courses('all', 'c.sortorder ASC', 'c.id,c.category,c.sortorder,c.visible,c.fullname,c.shortname,c.password,c.summary,c.teacher,c.cost,c.currency,c.enrol,c.guest');
1208         }
1209         unset($categories);
1210     } else {
1211         $categories = get_categories($category->id);  // sub categories
1212         $courses    = get_courses($category->id, 'c.sortorder ASC', 'c.id,c.category,c.sortorder,c.visible,c.fullname,c.shortname,c.password,c.summary,c.teacher,c.cost,c.currency,c.enrol,c.guest');
1213     }
1214
1215     if ($courses) {
1216         foreach ($courses as $course) {
1217             if ($hidesitecourse && !$course->category) {
1218                 continue;
1219             }
1220             print_course($course, $width);
1221         }
1222     } else {
1223         print_heading(get_string("nocoursesyet"));
1224         if (iscreator()) {  // Make it obvious for newbies on new sites how to add a course
1225             $options = array();
1226             $options['category'] = $category->id;
1227             echo '<div class="addcoursebutton" align="center">';
1228             print_single_button($CFG->wwwroot.'/course/edit.php', $options, get_string("addnewcourse"));
1229             echo '</div>';
1230         }
1231     }
1232
1233 }
1234
1235
1236 function print_course($course, $width="100%") {
1237
1238     global $CFG, $USER;
1239
1240     require_once("$CFG->dirroot/enrol/enrol.class.php");
1241
1242     $enrol = enrolment_factory::factory($course->enrol);
1243
1244     print_simple_box_start("center", "$width", '', 5, "coursebox");
1245
1246     $linkcss = $course->visible ? "" : " class=\"dimmed\" ";
1247
1248     echo "<table width=\"100%\">";
1249     echo '<tr valign="top">';
1250     echo '<td valign="top" width="50%" class="info">';
1251     echo '<b><a title="'.get_string('entercourse').'"'.
1252          $linkcss.' href="'.$CFG->wwwroot.'/course/view.php?id='.$course->id.'">'.
1253          $course->fullname.'</a></b><br />';
1254     if ($teachers = get_course_teachers($course->id)) {
1255         echo "<span class=\"teachers\">\n";
1256         foreach ($teachers as $teacher) {
1257             if ($teacher->authority > 0) {
1258                 if (!$teacher->role) {
1259                     $teacher->role = $course->teacher;
1260                 }
1261                 $fullname = fullname($teacher, isteacher($course->id)); // is the USER a teacher of that course
1262                 echo $teacher->role.': <a href="'.$CFG->wwwroot.'/user/view.php?id='.$teacher->id.
1263                      '&amp;course='.SITEID.'">'.$fullname.'</a><br />';
1264             }
1265         }
1266         echo "</span>\n";
1267     }
1268
1269     echo $enrol->get_access_icons($course);
1270
1271     echo '</td><td valign="top" width="50%" class="summary">';
1272     $options = NULL;
1273     $options->noclean = true;
1274     $options->para = false;
1275     echo format_text($course->summary, FORMAT_MOODLE, $options,  $course->id);
1276     echo "</td></tr>";
1277     echo "</table>";
1278
1279     print_simple_box_end();
1280 }
1281
1282
1283 function print_my_moodle() {
1284 /// Prints custom user information on the home page.
1285 /// Over time this can include all sorts of information
1286
1287     global $USER, $CFG;
1288
1289     if (!isset($USER->id)) {
1290         error("It shouldn't be possible to see My Moodle without being logged in.");
1291     }
1292
1293     if ($courses = get_my_courses($USER->id)) {
1294         foreach ($courses as $course) {
1295             if (!$course->category) {
1296                 continue;
1297             }
1298             print_course($course, "100%");
1299         }
1300
1301         if (count_records("course") > (count($courses) + 1) ) {  // Some courses not being displayed
1302             echo "<table width=\"100%\"><tr><td align=\"center\">";
1303             print_course_search("", false, "short");
1304             echo "</td><td align=\"center\">";
1305             print_single_button("$CFG->wwwroot/course/index.php", NULL, get_string("fulllistofcourses"), "get");
1306             echo "</td></tr></table>\n";
1307         }
1308     } else {
1309         if (count_records("course_categories") > 1) {
1310             print_simple_box_start("center", "100%", "#FFFFFF", 5, "categorybox");
1311             print_whole_category_list();
1312             print_simple_box_end();
1313         } else {
1314             print_courses(0, "100%");
1315         }
1316     }
1317 }
1318
1319
1320 function print_course_search($value="", $return=false, $format="plain") {
1321
1322     global $CFG;
1323
1324     $strsearchcourses= get_string("searchcourses");
1325
1326     if ($format == 'plain') {
1327         $output  = '<form name="coursesearch" action="'.$CFG->wwwroot.'/course/search.php" method="get">';
1328         $output .= '<center><p align="center" class="coursesearchbox">';
1329         $output .= '<input type="text" size="30" name="search" alt="'.s($strsearchcourses).'" value="'.s($value, true).'" />';
1330         $output .= '<input type="submit" value="'.s($strsearchcourses).'" />';
1331         $output .= '</p></center></form>';
1332     } else if ($format == 'short') {
1333         $output  = '<form name="coursesearch" action="'.$CFG->wwwroot.'/course/search.php" method="get">';
1334         $output .= '<center><p align="center" class="coursesearchbox">';
1335         $output .= '<input type="text" size="12" name="search" alt="'.s($strsearchcourses).'" value="'.s($value, true).'" />';
1336         $output .= '<input type="submit" value="'.s($strsearchcourses).'" />';
1337         $output .= '</p></center></form>';
1338     } else if ($format == 'navbar') {
1339         $output  = '<form name="coursesearch" action="'.$CFG->wwwroot.'/course/search.php" method="get">';
1340         $output .= '<table border="0" cellpadding="0" cellspacing="0"><tr><td nowrap="nowrap">';
1341         $output .= '<input type="text" size="20" name="search" alt="'.s($strsearchcourses).'" value="'.s($value, true).'" />';
1342         $output .= '<input type="submit" value="'.s($strsearchcourses).'" />';
1343         $output .= '</td></tr></table>';
1344         $output .= '</form>';
1345     }
1346
1347     if ($return) {
1348         return $output;
1349     }
1350     echo $output;
1351 }
1352
1353 /// MODULE FUNCTIONS /////////////////////////////////////////////////////////////////
1354
1355 function add_course_module($mod) {
1356
1357     $mod->added = time();
1358     unset($mod->id);
1359
1360     return insert_record("course_modules", $mod);
1361 }
1362
1363 function add_mod_to_section($mod, $beforemod=NULL) {
1364 /// Given a full mod object with section and course already defined
1365 /// If $before is specified, then this is an existing ID which we
1366 /// will insert the new module before
1367 ///
1368 /// Returns the course_sections ID where the mod is inserted
1369
1370     if ($section = get_record("course_sections", "course", "$mod->course", "section", "$mod->section")) {
1371
1372         $section->sequence = trim($section->sequence);
1373
1374         if (empty($section->sequence)) {
1375             $newsequence = "$mod->coursemodule";
1376
1377         } else if ($beforemod) {
1378             $modarray = explode(",", $section->sequence);
1379
1380             if ($key = array_keys ($modarray, $beforemod->id)) {
1381                 $insertarray = array($mod->id, $beforemod->id);
1382                 array_splice($modarray, $key[0], 1, $insertarray);
1383                 $newsequence = implode(",", $modarray);
1384
1385             } else {  // Just tack it on the end anyway
1386                 $newsequence = "$section->sequence,$mod->coursemodule";
1387             }
1388
1389         } else {
1390             $newsequence = "$section->sequence,$mod->coursemodule";
1391         }
1392
1393         if (set_field("course_sections", "sequence", $newsequence, "id", $section->id)) {
1394             return $section->id;     // Return course_sections ID that was used.
1395         } else {
1396             return 0;
1397         }
1398
1399     } else {  // Insert a new record
1400         $section->course = $mod->course;
1401         $section->section = $mod->section;
1402         $section->summary = "";
1403         $section->sequence = $mod->coursemodule;
1404         return insert_record("course_sections", $section);
1405     }
1406 }
1407
1408 function set_coursemodule_groupmode($id, $groupmode) {
1409     return set_field("course_modules", "groupmode", $groupmode, "id", $id);
1410 }
1411
1412 /**
1413 * $prevstateoverrides = true will set the visibility of the course module
1414 * to what is defined in visibleold. This enables us to remember the current
1415 * visibility when making a whole section hidden, so that when we toggle
1416 * that section back to visible, we are able to return the visibility of
1417 * the course module back to what it was originally.
1418 */
1419 function set_coursemodule_visible($id, $visible, $prevstateoverrides=false) {
1420     $cm = get_record('course_modules', 'id', $id);
1421     $modulename = get_field('modules', 'name', 'id', $cm->module);
1422     if ($events = get_records_select('event', "instance = '$cm->instance' AND modulename = '$modulename'")) {
1423         foreach($events as $event) {
1424             if ($visible) {
1425                 show_event($event);
1426             } else {
1427                 hide_event($event);
1428             }
1429         }
1430     }
1431     if ($prevstateoverrides) {
1432         if ($visible == '0') {
1433             // Remember the current visible state so we can toggle this back.
1434             set_field('course_modules', 'visibleold', $cm->visible, 'id', $id);
1435         } else {
1436             // Get the previous saved visible states.
1437             return set_field('course_modules', 'visible', $cm->visibleold, 'id', $id);
1438         }
1439     }
1440     return set_field("course_modules", "visible", $visible, "id", $id);
1441 }
1442
1443 /*
1444  * Delete a course module and any associated data at the course level (events)
1445  * Until 1.5 this function simply marked a deleted flag ... now it
1446  * deletes it completely.
1447  *
1448  */
1449 function delete_course_module($id) {
1450     if (!$cm = get_record('course_modules', 'id', $id)) {
1451         return true;
1452     }
1453     $modulename = get_field('modules', 'name', 'id', $cm->module);
1454     if ($events = get_records_select('event', "instance = '$cm->instance' AND modulename = '$modulename'")) {
1455         foreach($events as $event) {
1456             delete_event($event);
1457         }
1458     }
1459     return delete_records('course_modules', 'id', $cm->id);
1460 }
1461
1462 function delete_mod_from_section($mod, $section) {
1463
1464     if ($section = get_record("course_sections", "id", "$section") ) {
1465
1466         $modarray = explode(",", $section->sequence);
1467
1468         if ($key = array_keys ($modarray, $mod)) {
1469             array_splice($modarray, $key[0], 1);
1470             $newsequence = implode(",", $modarray);
1471             return set_field("course_sections", "sequence", $newsequence, "id", $section->id);
1472         } else {
1473             return false;
1474         }
1475
1476     }
1477     return false;
1478 }
1479
1480 function move_section($course, $section, $move) {
1481 /// Moves a whole course section up and down within the course
1482     global $USER;
1483
1484     if (!$move) {
1485         return true;
1486     }
1487
1488     $sectiondest = $section + $move;
1489
1490     if ($sectiondest > $course->numsections or $sectiondest < 1) {
1491         return false;
1492     }
1493
1494     if (!$sectionrecord = get_record("course_sections", "course", $course->id, "section", $section)) {
1495         return false;
1496     }
1497
1498     if (!$sectiondestrecord = get_record("course_sections", "course", $course->id, "section", $sectiondest)) {
1499         return false;
1500     }
1501
1502     if (!set_field("course_sections", "section", $sectiondest, "id", $sectionrecord->id)) {
1503         return false;
1504     }
1505     if (!set_field("course_sections", "section", $section, "id", $sectiondestrecord->id)) {
1506         return false;
1507     }
1508     // if the focus is on the section that is being moved, then move the focus along
1509     if (isset($USER->display[$course->id]) and ($USER->display[$course->id] == $section)) {
1510         course_set_display($course->id, $sectiondest);
1511     }
1512
1513     // Check for duplicates and fix order if needed.
1514     // There is a very rare case that some sections in the same course have the same section id.
1515     $sections = get_records_select('course_sections', "course = $course->id", 'section ASC');
1516     $n = 0;
1517     foreach ($sections as $section) {
1518         if ($section->section != $n) {
1519             if (!set_field('course_sections', 'section', $n, 'id', $section->id)) {
1520                 return false;
1521             }
1522         }
1523         $n++;
1524     }
1525     return true;
1526 }
1527
1528
1529 function moveto_module($mod, $section, $beforemod=NULL) {
1530 /// All parameters are objects
1531 /// Move the module object $mod to the specified $section
1532 /// If $beforemod exists then that is the module
1533 /// before which $modid should be inserted
1534
1535 /// Remove original module from original section
1536
1537     if (! delete_mod_from_section($mod->id, $mod->section)) {
1538         notify("Could not delete module from existing section");
1539     }
1540
1541 /// Update module itself if necessary
1542
1543     if ($mod->section != $section->id) {
1544         $mod->section = $section->id;
1545         if (!update_record("course_modules", $mod)) {
1546             return false;
1547         }
1548         // if moving to a hidden section then hide module
1549         if (!$section->visible) {
1550             set_coursemodule_visible($mod->id, 0);
1551         }
1552     }
1553
1554 /// Add the module into the new section
1555
1556     $mod->course       = $section->course;
1557     $mod->section      = $section->section;  // need relative reference
1558     $mod->coursemodule = $mod->id;
1559
1560     if (! add_mod_to_section($mod, $beforemod)) {
1561         return false;
1562     }
1563
1564     return true;
1565
1566 }
1567
1568 function make_editing_buttons($mod, $absolute=false, $moveselect=true, $indent=-1, $section=-1) {
1569     global $CFG, $USER;
1570
1571     static $str;
1572     static $sesskey;
1573
1574     if (!isset($str)) {
1575         $str->delete    = get_string("delete");
1576         $str->move      = get_string("move");
1577         $str->moveup    = get_string("moveup");
1578         $str->movedown  = get_string("movedown");
1579         $str->moveright = get_string("moveright");
1580         $str->moveleft  = get_string("moveleft");
1581         $str->update    = get_string("update");
1582         $str->duplicate    = get_string("duplicate");
1583         $str->hide      = get_string("hide");
1584         $str->show      = get_string("show");
1585         $str->clicktochange  = get_string("clicktochange");
1586         $str->forcedmode     = get_string("forcedmode");
1587         $str->groupsnone     = get_string("groupsnone");
1588         $str->groupsseparate = get_string("groupsseparate");
1589         $str->groupsvisible  = get_string("groupsvisible");
1590         $sesskey = sesskey();
1591     }
1592
1593     if ($section >= 0) {
1594         $section = '&amp;sr='.$section;   // Section return
1595     } else {
1596         $section = '';
1597     }
1598
1599     if ($absolute) {
1600         $path = $CFG->wwwroot.'/course';
1601     } else {
1602         $path = '.';
1603     }
1604
1605     if ($mod->visible) {
1606         $hideshow = '<a title="'.$str->hide.'" href="'.$path.'/mod.php?hide='.$mod->id.
1607                     '&amp;sesskey='.$sesskey.$section.'"><img'.
1608                     ' src="'.$CFG->pixpath.'/t/hide.gif" hspace="2" height="11" width="11" '.
1609                     ' border="0" alt="'.$str->hide.'" /></a> ';
1610     } else {
1611         $hideshow = '<a title="'.$str->show.'" href="'.$path.'/mod.php?show='.$mod->id.
1612                     '&amp;sesskey='.$sesskey.$section.'"><img'.
1613                     ' src="'.$CFG->pixpath.'/t/show.gif" hspace="2" height="11" width="11" '.
1614                     ' border="0" alt="'.$str->show.'" /></a> ';
1615     }
1616     if ($mod->groupmode !== false) {
1617         if ($mod->groupmode == SEPARATEGROUPS) {
1618             $grouptitle = $str->groupsseparate;
1619             $groupimage = $CFG->pixpath.'/t/groups.gif';
1620             $grouplink  = $path.'/mod.php?id='.$mod->id.'&amp;groupmode=0&amp;sesskey='.$sesskey;
1621         } else if ($mod->groupmode == VISIBLEGROUPS) {
1622             $grouptitle = $str->groupsvisible;
1623             $groupimage = $CFG->pixpath.'/t/groupv.gif';
1624             $grouplink  = $path.'/mod.php?id='.$mod->id.'&amp;groupmode=1&amp;sesskey='.$sesskey;
1625         } else {
1626             $grouptitle = $str->groupsnone;
1627             $groupimage = $CFG->pixpath.'/t/groupn.gif';
1628             $grouplink  = $path.'/mod.php?id='.$mod->id.'&amp;groupmode=2&amp;sesskey='.$sesskey;
1629         }
1630         if ($mod->groupmodelink) {
1631             $groupmode = '<a title="'.$grouptitle.' ('.$str->clicktochange.')" href="'.$grouplink.'">'.
1632                          '<img src="'.$groupimage.'" hspace="2" height="11" width="11" '.
1633                          'border="0" alt="'.$grouptitle.'" /></a>';
1634         } else {
1635             $groupmode = '<img title="'.$grouptitle.' ('.$str->forcedmode.')" '.
1636                          ' src="'.$groupimage.'" hspace="2" height="11" width="11" '.
1637                          'border="0" alt="'.$grouptitle.'" />';
1638         }
1639     } else {
1640         $groupmode = "";
1641     }
1642
1643     if ($moveselect) {
1644         $move =     '<a title="'.$str->move.'" href="'.$path.'/mod.php?copy='.$mod->id.
1645                     '&amp;sesskey='.$sesskey.$section.'"><img'.
1646                     ' src="'.$CFG->pixpath.'/t/move.gif" hspace="2" height="11" width="11" '.
1647                     ' border="0" alt="'.$str->move.'" /></a>';
1648     } else {
1649         $move =     '<a title="'.$str->moveup.'" href="'.$path.'/mod.php?id='.$mod->id.
1650                     '&amp;move=-1&amp;sesskey='.$sesskey.$section.'"><img'.
1651                     ' src="'.$CFG->pixpath.'/t/up.gif" hspace="2" height="11" width="11" '.
1652                     ' border="0" alt="'.$str->moveup.'" /></a>'.
1653                     '<a title="'.$str->movedown.'" href="'.$path.'/mod.php?id='.$mod->id.
1654                     '&amp;move=1&amp;sesskey='.$sesskey.$section.'"><img'.
1655                     ' src="'.$CFG->pixpath.'/t/down.gif" hspace="2" height="11" width="11" '.
1656                     ' border="0" alt="'.$str->movedown.'" /></a>';
1657     }
1658
1659     $leftright = "";
1660     if ($indent > 0) {
1661         $leftright .= '<a title="'.$str->moveleft.'" href="'.$path.'/mod.php?id='.$mod->id.
1662                       '&amp;indent=-1&amp;sesskey='.$sesskey.$section.'"><img'.
1663                       ' src="'.$CFG->pixpath.'/t/left.gif" hspace="2" height="11" width="11" '.
1664                       ' border="0" alt="'.$str->moveleft.'" /></a>';
1665     }
1666     if ($indent >= 0) {
1667         $leftright .= '<a title="'.$str->moveright.'" href="'.$path.'/mod.php?id='.$mod->id.
1668                       '&amp;indent=1&amp;sesskey='.$sesskey.$section.'"><img'.
1669                       ' src="'.$CFG->pixpath.'/t/right.gif" hspace="2" height="11" width="11" '.
1670                       ' border="0" alt="'.$str->moveright.'" /></a>';
1671     }
1672
1673     return '<span class="commands">'.$leftright.$move.
1674            '<a title="'.$str->update.'" href="'.$path.'/mod.php?update='.$mod->id.
1675            '&amp;sesskey='.$sesskey.$section.'"><img'.
1676            ' src="'.$CFG->pixpath.'/t/edit.gif" hspace="2" height="11" width="11" border="0" '.
1677            ' alt="'.$str->update.'" /></a>'.
1678            '<a title="'.$str->delete.'" href="'.$path.'/mod.php?delete='.$mod->id.
1679            '&amp;sesskey='.$sesskey.$section.'"><img'.
1680            ' src="'.$CFG->pixpath.'/t/delete.gif" hspace="2" height="11" width="11" border="0" '.
1681            ' alt="'.$str->delete.'" /></a>'.$hideshow.$groupmode.'</span>';
1682 }
1683
1684 /**
1685  * given a course object with shortname & fullname, this function will
1686  * truncate the the number of chars allowed and add ... if it was too long
1687  */
1688 function course_format_name ($course,$max=100) {
1689
1690     $str = $course->shortname.': '.$course->fullname;
1691     if (strlen($str) <= $max) {
1692         return $str;
1693     }
1694     else {
1695         return substr($str,0,$max-3).'...';
1696     }
1697 }
1698
1699 /**
1700  * This function will return true if the given course is a child course at all
1701  */
1702 function course_in_meta ($course) {
1703     return record_exists("course_meta","child_course",$course->id);
1704 }
1705
1706
1707 /**
1708  * Print standard form elements on module setup forms in mod/.../mod.html
1709  */
1710 function print_standard_coursemodule_settings($form) {
1711     if (! $course = get_record('course', 'id', $form->course)) {
1712         error("This course doesn't exist");
1713     }
1714     print_groupmode_setting($form, $course);
1715     print_visible_setting($form, $course);
1716 }
1717
1718 /**
1719  * Print groupmode form element on module setup forms in mod/.../mod.html
1720  */
1721 function print_groupmode_setting($form, $course=NULL) {
1722
1723     if (empty($course)) {
1724         if (! $course = get_record('course', 'id', $form->course)) {
1725             error("This course doesn't exist");
1726         }
1727     }
1728     if ($form->coursemodule) {
1729         if (! $cm = get_record('course_modules', 'id', $form->coursemodule)) {
1730             error("This course module doesn't exist");
1731         }
1732     } else {
1733         $cm = null;
1734     }
1735     $groupmode = groupmode($course, $cm);
1736     if ($course->groupmode or (!$course->groupmodeforce)) {
1737         echo '<tr valign="top">';
1738         echo '<td align="right"><b>'.get_string('groupmode').':</b></td>';
1739         echo '<td align="left">';
1740         unset($choices);
1741         $choices[NOGROUPS] = get_string('groupsnone');
1742         $choices[SEPARATEGROUPS] = get_string('groupsseparate');
1743         $choices[VISIBLEGROUPS] = get_string('groupsvisible');
1744         choose_from_menu($choices, 'groupmode', $groupmode, '', '', 0, false, $course->groupmodeforce);
1745         helpbutton('groupmode', get_string('groupmode'));
1746         echo '</td></tr>';
1747     }
1748 }
1749
1750 /**
1751  * Print visibility setting form element on module setup forms in mod/.../mod.html
1752  */
1753 function print_visible_setting($form, $course=NULL) {
1754     if (empty($course)) {
1755         if (! $course = get_record('course', 'id', $form->course)) {
1756             error("This course doesn't exist");
1757         }
1758     }
1759     if ($form->coursemodule) {
1760         $visible = get_field('course_modules', 'visible', 'id', $form->coursemodule);
1761     } else {
1762         $visible = true;
1763     }
1764
1765     if ($form->mode == 'add') { // in this case $form->section is the section number, not the id
1766         $hiddensection = !get_field('course_sections', 'visible', 'section', $form->section, 'course', $form->course);
1767     } else {
1768         $hiddensection = !get_field('course_sections', 'visible', 'id', $form->section);
1769     }
1770     if ($hiddensection) {
1771         $visible = false;
1772     }
1773
1774     echo '<tr valign="top">';
1775     echo '<td align="right"><b>'.get_string('visibletostudents','',moodle_strtolower($course->students)).':</b></td>';
1776     echo '<td align="left">';
1777     unset($choices);
1778     $choices[1] = get_string('show');
1779     $choices[0] = get_string('hide');
1780     choose_from_menu($choices, 'visible', $visible, '', '', 0, false, $hiddensection);
1781     echo '</td></tr>';
1782 }
1783
1784 function update_restricted_mods($course,$mods) {
1785     delete_records("course_allowed_modules","course",$course->id);
1786     if (empty($course->restrictmodules)) {
1787         return;
1788     }
1789     else {
1790         foreach ($mods as $mod) {
1791             if ($mod == 0)
1792                 continue; // this is the 'allow none' option
1793             $am->course = $course->id;
1794             $am->module = $mod;
1795             insert_record("course_allowed_modules",$am);
1796         }
1797     }
1798 }
1799
1800 /**
1801  * This function will take an int (module id) or a string (module name)
1802  * and return true or false, whether it's allowed in the given course (object)
1803  * $mod is not allowed to be an object, as the field for the module id is inconsistent
1804  * depending on where in the code it's called from (sometimes $mod->id, sometimes $mod->module)
1805  */
1806
1807 function course_allowed_module($course,$mod) {
1808     if (empty($course->restrictmodules)) {
1809         return true;
1810     }
1811     if (isadmin()) {
1812         return true;
1813     }
1814     if (is_numeric($mod)) {
1815         $modid = $mod;
1816     } else if (is_string($mod)) {
1817         if ($mod = get_field("modules","id","name",$mod))
1818             $modid = $mod;
1819     }
1820     if (empty($modid)) {
1821         return false;
1822     }
1823     return (record_exists("course_allowed_modules","course",$course->id,"module",$modid));
1824 }
1825
1826 /***
1827  *** Efficiently moves many courses around while maintaining
1828  *** sortorder in order.
1829  ***
1830  *** $courseids is an array of course ids
1831  ***
1832  **/
1833
1834 function move_courses ($courseids, $categoryid) {
1835
1836     global $CFG;
1837
1838     if (!empty($courseids)) {
1839
1840             $courseids = array_reverse($courseids);
1841
1842             foreach ($courseids as $courseid) {
1843
1844                 if (! $course  = get_record("course", "id", $courseid)) {
1845                     notify("Error finding course $courseid");
1846                 } else {
1847                     // figure out a sortorder that we can use in the destination category
1848                     $sortorder = get_field_sql('SELECT MIN(sortorder)-1 AS min
1849                                                     FROM ' . $CFG->prefix . 'course WHERE category=' . $categoryid);
1850                     if ($sortorder === false) {
1851                         // the category is empty
1852                         // rather than let the db default to 0
1853                         // set it to > 100 and avoid extra work in fix_coursesortorder()
1854                         $sortorder = 200;
1855                     } else if ($sortorder < 10) {
1856                         fix_course_sortorder($categoryid);
1857                     }
1858
1859                     $course->category  = $categoryid;
1860                     $course->sortorder = $sortorder;
1861                     $course->fullname = addslashes($course->fullname);
1862                     $course->shortname = addslashes($course->shortname);
1863                     $course->summary = addslashes($course->summary);
1864                     $course->password = addslashes($course->password);
1865                     $course->teacher = addslashes($course->teacher);
1866                     $course->teachers = addslashes($course->teachers);
1867                     $course->student = addslashes($course->student);
1868                     $course->students = addslashes($course->students);
1869
1870                     if (!update_record('course', $course)) {
1871                         notify("An error occurred - course not moved!");
1872                     }
1873                 }
1874             }
1875             fix_course_sortorder();
1876         }
1877     return true;
1878 }
1879
1880 ?>