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', '', PARAM_RAW);
  11     $edit        = optional_param('edit', -1, PARAM_BOOL);
  12     $hide        = optional_param('hide', 0, PARAM_INT);
  13     $show        = optional_param('show', 0, PARAM_INT);
  14     $idnumber    = optional_param('idnumber', '', PARAM_RAW);
  15     $studentview = optional_param('studentview', -1, PARAM_BOOL);
  16     $section     = optional_param('section', 0, PARAM_INT);
  17     $move        = optional_param('move', 0, PARAM_INT);
  18     $marker      = optional_param('marker',-1 , PARAM_INT);
  19
  20
  21     if (empty($id) && empty($name) && empty($idnumber)) {
  22         error("Must specify course id, short name or idnumber");
  23     }
  24
  25     if (!empty($name)) {
  26         if (! ($course = get_record('course', 'shortname', $name)) ) {
  27             error('Invalid short course name');
  28         }
  29     } else if (!empty($idnumber)) {
  30         if (! ($course = get_record('course', 'idnumber', $idnumber)) ) {
  31             error('Invalid course idnumber');
  32         }
  33     } else {
  34         if (! ($course = get_record('course', 'id', $id)) ) {
  35             error('Invalid course id');
  36         }
  37     }
  38
  39     require_login($course->id);
  40
  41     //If course is hosted on an external server, redirect to corresponding
  42     //url with appropriate authentication attached as parameter
  43     if (file_exists($CFG->dirroot .'/course/externservercourse.php')) {
  44         include $CFG->dirroot .'/course/externservercourse.php';
  45         if (function_exists(extern_server_course)) {
  46             if ($extern_url = extern_server_course($course)) {
  47                 redirect($extern_url);
  48             }
  49         }
  50     }
  51
  52     require_once($CFG->dirroot.'/calendar/lib.php');    /// This is after login because it needs $USER
  53
  54     add_to_log($course->id, 'course', 'view', "view.php?id=$course->id", "$course->id");
  55
  56     $course->format = clean_param($course->format, PARAM_ALPHA);
  57     if (!file_exists($CFG->dirroot.'/course/format/'.$course->format.'/format.php')) {
  58         $course->format = 'weeks';  // Default format is weeks
  59     }
  60
  61     $PAGE = page_create_object(PAGE_COURSE_VIEW, $course->id);
  62     $pageblocks = blocks_setup($PAGE,BLOCKS_PINNED_BOTH);
  63
  64     if (!isset($USER->editing)) {
  65         $USER->editing = 0;
  66     }
  67
  68     if (!isset($USER->studentview)) {
  69         $USER->studentview = false;
  70     }
  71
  72     // need to check this here, as studentview=on disables edit allowed (where 'on' is checked)
  73     if (($studentview == 0) and confirm_sesskey()) {
  74         $USER->studentview = false;
  75     }
  76
  77     if ($PAGE->user_allowed_editing()) {
  78         if (($edit == 1) and confirm_sesskey()) {
  79             $USER->editing = 1;
  80         } else if (($edit == 0) and confirm_sesskey()) {
  81             $USER->editing = 0;
  82             if(!empty($USER->activitycopy) && $USER->activitycopycourse == $course->id) {
  83                 $USER->activitycopy       = false;
  84                 $USER->activitycopycourse = NULL;
  85             }
  86         }
  87
  88         if (($studentview == 1) and confirm_sesskey()) {
  89             $USER->studentview = true;
  90             $USER->editing = 0;
  91         }
  92
  93         if ($hide && confirm_sesskey()) {
  94             set_section_visible($course->id, $hide, '0');
  95         }
  96
  97         if ($show && confirm_sesskey()) {
  98             set_section_visible($course->id, $show, '1');
  99         }
 100
 101         if (!empty($section)) {
 102             if (!empty($move) and confirm_sesskey()) {
 103                 if (!move_section($course, $section, $move)) {
 104                     notify('An error occurred while moving a section');
 105                 }
 106             }
 107         }
 108     } else {
 109         $USER->editing = 0;
 110     }
 111
 112     $SESSION->fromdiscussion = $CFG->wwwroot .'/course/view.php?id='. $course->id;
 113
 114     if ($course->id == SITEID) {      // This course is not a real course.
 115         redirect($CFG->wwwroot .'/');
 116     }
 117
 118     $PAGE->print_header(get_string('course').': %fullname%');
 119
 120     echo '<div class="course-content">';  // course wrapper start
 121
 122     get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
 123
 124     if (! $sections = get_all_sections($course->id)) {   // No sections found
 125         // Double-check to be extra sure
 126         if (! $section = get_record('course_sections', 'course', $course->id, 'section', 0)) {
 127             $section->course = $course->id;   // Create a default section.
 128             $section->section = 0;
 129             $section->visible = 1;
 130             $section->id = insert_record('course_sections', $section);
 131         }
 132         if (! $sections = get_all_sections($course->id) ) {      // Try again
 133             error('Error finding or creating section structures for this course');
 134         }
 135     }
 136
 137     if (empty($course->modinfo)) {       // Course cache was never made
 138         rebuild_course_cache($course->id);
 139         if (! $course = get_record('course', 'id', $course->id) ) {
 140             error("That's an invalid course id");
 141         }
 142     }
 143
 144     require($CFG->dirroot .'/course/format/'. $course->format .'/format.php');  // Include the actual course format
 145
 146     echo '</div>';  // content wrapper end
 147     print_footer(NULL, $course);
 148
 149 ?>