course/view.php

   1 <?php // $Id$
   2
   3 //  Display the course home page.
   4
   5     require_once('../config.php');
   6     require_once('lib.php');
   7     require_once($CFG->libdir.'/blocklib.php');
   8
   9     $id          = optional_param('id', 0, PARAM_INT);
  10     $name        = optional_param('name');
  11     $edit        = optional_param('edit');
  12     $idnumber    = optional_param('idnumber');
  13
  14     if (empty($id) && empty($name)) {
  15         error("Must specify course id or short name");
  16     }
  17
  18     if (!empty($name)) {
  19         if (! ($course = get_record('course', 'shortname', $name)) ) {
  20             error('Invalid short course name');
  21         }
  22     } else if (!empty($idnumber)) {
  23         if (! ($course = get_record('course', 'idnumber', $idnumber)) ) {
  24             error('Invalid course idnumber');
  25         }
  26     } else {
  27         if (! ($course = get_record('course', 'id', $id)) ) {
  28             error('Invalid course id');
  29         }
  30     }
  31
  32     require_login($course->id);
  33
  34     //If course is hosted on an external server, redirect to corresponding
  35     //url with appropriate authentication attached as parameter
  36     if (file_exists($CFG->dirroot ."/course/externservercourse.php")) {
  37         include $CFG->dirroot ."/course/externservercourse.php";
  38         if (function_exists(extern_server_course)) {
  39             if ($extern_url = extern_server_course($course)) {
  40                 redirect($extern_url);
  41             }
  42         }
  43     }
  44
  45     require_once($CFG->dirroot.'/calendar/lib.php');    /// This is after login because it needs $USER
  46
  47     add_to_log($course->id, "course", "view", "view.php?id=$course->id", "$course->id");
  48
  49     $course->format = clean_param($course->format, PARAM_ALPHA);
  50     if (!file_exists($CFG->dirroot.'/course/format/'.$course->format.'/format.php')) {
  51         $course->format = 'weeks';  // Default format is weeks
  52     }
  53
  54     $PAGE = page_create_object(PAGE_COURSE_VIEW, $course->id);
  55     $pageblocks = blocks_setup($PAGE);
  56
  57     if (!isset($USER->editing)) {
  58         $USER->editing = false;
  59     }
  60
  61     if ($PAGE->user_allowed_editing()) {
  62         if ($edit == 'on') {
  63             $USER->editing = true;
  64         } else if ($edit == 'off') {
  65             $USER->editing = false;
  66             if(!empty($USER->activitycopy) && $USER->activitycopycourse == $course->id) {
  67                 $USER->activitycopy       = false;
  68                 $USER->activitycopycourse = NULL;
  69             }
  70         }
  71
  72         if (isset($hide) && confirm_sesskey()) {
  73             set_section_visible($course->id, $hide, '0');
  74         }
  75
  76         if (isset($show) && confirm_sesskey()) {
  77             set_section_visible($course->id, $show, '1');
  78         }
  79
  80         if (!empty($section)) {
  81             if (!empty($move) and confirm_sesskey()) {
  82                 if (!move_section($course, $section, $move)) {
  83                     notify("An error occurred while moving a section");
  84                 }
  85             }
  86         }
  87     } else {
  88         $USER->editing = false;
  89     }
  90
  91     $SESSION->fromdiscussion = "$CFG->wwwroot/course/view.php?id=$course->id";
  92
  93     if ($course->id == SITEID) {      // This course is not a real course.
  94         redirect("$CFG->wwwroot/");
  95     }
  96
  97     $PAGE->print_header(get_string('course').': %fullname%');
  98
  99     echo '<div class="course-content">';  // course wrapper start
 100
 101     get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
 102
 103     if (! $sections = get_all_sections($course->id)) {   // No sections found
 104         // Double-check to be extra sure
 105         if (! $section = get_record("course_sections", "course", $course->id, "section", 0)) {
 106             $section->course = $course->id;   // Create a default section.
 107             $section->section = 0;
 108             $section->visible = 1;
 109             $section->id = insert_record("course_sections", $section);
 110         }
 111         if (! $sections = get_all_sections($course->id) ) {      // Try again
 112             error("Error finding or creating section structures for this course");
 113         }
 114     }
 115
 116     if (empty($course->modinfo)) {       // Course cache was never made
 117         rebuild_course_cache($course->id);
 118         if (! $course = get_record("course", "id", $course->id) ) {
 119             error("That's an invalid course id");
 120         }
 121     }
 122
 123     require("$CFG->dirroot/course/format/$course->format/format.php");  // Include the actual course format
 124
 125     echo '</div>';  // content wrapper end
 126     print_footer(NULL, $course);
 127
 128 ?>