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($CFG->libdir.'/blocklib.php');
   8     require_once($CFG->libdir.'/ajax/ajaxlib.php');
   9     require_once($CFG->dirroot.'/mod/forum/lib.php');
  10
  11     $id          = optional_param('id', 0, PARAM_INT);
  12     $name        = optional_param('name', '', PARAM_RAW);
  13     $edit        = optional_param('edit', -1, PARAM_BOOL);
  14     $hide        = optional_param('hide', 0, PARAM_INT);
  15     $show        = optional_param('show', 0, PARAM_INT);
  16     $idnumber    = optional_param('idnumber', '', PARAM_RAW);
  17     $section     = optional_param('section', 0, PARAM_INT);
  18     $move        = optional_param('move', 0, PARAM_INT);
  19     $marker      = optional_param('marker',-1 , PARAM_INT);
  20     $switchrole  = optional_param('switchrole',-1, PARAM_INT);
  21
  22
  23
  24     if (empty($id) && empty($name) && empty($idnumber)) {
  25         error("Must specify course id, short name or idnumber");
  26     }
  27
  28     if (!empty($name)) {
  29         if (! ($course = get_record('course', 'shortname', $name)) ) {
  30             error('Invalid short course name');
  31         }
  32     } else if (!empty($idnumber)) {
  33         if (! ($course = get_record('course', 'idnumber', $idnumber)) ) {
  34             error('Invalid course idnumber');
  35         }
  36     } else {
  37         if (! ($course = get_record('course', 'id', $id)) ) {
  38             error('Invalid course id');
  39         }
  40     }
  41
  42     if (!$context = get_context_instance(CONTEXT_COURSE, $course->id)) {
  43         print_error('nocontext');
  44     }
  45
  46     if ($switchrole == 0) {  // Remove any switched roles before checking login
  47         role_switch($switchrole, $context);
  48     }
  49
  50     require_login($course->id);
  51
  52     if ($switchrole > 0) {
  53         role_switch($switchrole, $context);
  54         require_login($course->id);   // Double check that this role is allowed here
  55     }
  56
  57     //If course is hosted on an external server, redirect to corresponding
  58     //url with appropriate authentication attached as parameter
  59     if (file_exists($CFG->dirroot .'/course/externservercourse.php')) {
  60         include $CFG->dirroot .'/course/externservercourse.php';
  61         if (function_exists('extern_server_course')) {
  62             if ($extern_url = extern_server_course($course)) {
  63                 redirect($extern_url);
  64             }
  65         }
  66     }
  67
  68
  69     require_once($CFG->dirroot.'/calendar/lib.php');    /// This is after login because it needs $USER
  70
  71     add_to_log($course->id, 'course', 'view', "view.php?id=$course->id", "$course->id");
  72
  73     $course->format = clean_param($course->format, PARAM_ALPHA);
  74     if (!file_exists($CFG->dirroot.'/course/format/'.$course->format.'/format.php')) {
  75         $course->format = 'weeks';  // Default format is weeks
  76     }
  77
  78     $PAGE = page_create_object(PAGE_COURSE_VIEW, $course->id);
  79     $pageblocks = blocks_setup($PAGE, BLOCKS_PINNED_BOTH);
  80
  81
  82     if (!isset($USER->editing)) {
  83         $USER->editing = 0;
  84     }
  85     if ($PAGE->user_allowed_editing()) {
  86         if (($edit == 1) and confirm_sesskey()) {
  87             $USER->editing = 1;
  88         } else if (($edit == 0) and confirm_sesskey()) {
  89             $USER->editing = 0;
  90             if(!empty($USER->activitycopy) && $USER->activitycopycourse == $course->id) {
  91                 $USER->activitycopy       = false;
  92                 $USER->activitycopycourse = NULL;
  93             }
  94         }
  95
  96         if ($hide && confirm_sesskey()) {
  97             set_section_visible($course->id, $hide, '0');
  98         }
  99
 100         if ($show && confirm_sesskey()) {
 101             set_section_visible($course->id, $show, '1');
 102         }
 103
 104         if (!empty($section)) {
 105             if (!empty($move) and confirm_sesskey()) {
 106                 if (!move_section($course, $section, $move)) {
 107                     notify('An error occurred while moving a section');
 108                 }
 109             }
 110         }
 111     } else {
 112         $USER->editing = 0;
 113     }
 114
 115     $SESSION->fromdiscussion = $CFG->wwwroot .'/course/view.php?id='. $course->id;
 116
 117
 118     if ($course->id == SITEID) {
 119         // This course is not a real course.
 120         redirect($CFG->wwwroot .'/');
 121     }
 122
 123
 124     // AJAX-capable course format?
 125     $CFG->useajax = false;
 126     $ajaxformatfile = $CFG->dirroot.'/course/format/'.$course->format.'/ajax.php';
 127     $bodytags = '';
 128
 129     if (file_exists($ajaxformatfile)) {      // Needs to exist otherwise no AJAX by default
 130
 131         $CFG->ajaxcapable = false;           // May be overridden later by ajaxformatfile
 132         $CFG->ajaxtestedbrowsers = array();  // May be overridden later by ajaxformatfile
 133
 134         require_once($ajaxformatfile);
 135
 136         if (!empty($USER->editing) && $CFG->ajaxcapable && has_capability('moodle/course:manageactivities', $context)) {
 137                                                              // Course-based switches
 138
 139             if (ajaxenabled($CFG->ajaxtestedbrowsers)) {     // Browser, user and site-based switches
 140
 141                 require_js(array('yui_yahoo',
 142                                  'yui_dom',
 143                                  'yui_event',
 144                                  'yui_dragdrop',
 145                                  'yui_connection',
 146                                  'ajaxcourse_blocks',
 147                                  'ajaxcourse_sections'));
 148
 149                 if (debugging('', DEBUG_DEVELOPER)) {
 150                     require_js(array('yui_logger'));
 151
 152                     $bodytags = 'onload = "javascript:
 153                     show_logger = function() {
 154                         var logreader = new YAHOO.widget.LogReader();
 155                         logreader.newestOnTop = false;
 156                         logreader.setTitle(\'Moodle Debug: YUI Log Console\');
 157                     };
 158                     show_logger();
 159                     "';
 160                 }
 161
 162                 // Okay, global variable alert. VERY UGLY. We need to create
 163                 // this object here before the <blockname>_print_block()
 164                 // function is called, since that function needs to set some
 165                 // stuff in the javascriptportal object.
 166                 $COURSE->javascriptportal = new jsportal();
 167                 $CFG->useajax = true;
 168             }
 169         }
 170     }
 171
 172     $CFG->blocksdrag = $CFG->useajax;   // this will add a new class to the header so we can style differently
 173
 174
 175     $PAGE->print_header(get_string('course').': %fullname%', NULL, '', $bodytags);
 176     // Course wrapper start.
 177     echo '<div class="course-content">';
 178
 179
 180     get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
 181
 182     if (! $sections = get_all_sections($course->id)) {   // No sections found
 183         // Double-check to be extra sure
 184         if (! $section = get_record('course_sections', 'course', $course->id, 'section', 0)) {
 185             $section->course = $course->id;   // Create a default section.
 186             $section->section = 0;
 187             $section->visible = 1;
 188             $section->id = insert_record('course_sections', $section);
 189         }
 190         if (! $sections = get_all_sections($course->id) ) {      // Try again
 191             error('Error finding or creating section structures for this course');
 192         }
 193     }
 194
 195
 196     if (empty($course->modinfo)) {
 197         // Course cache was never made.
 198         rebuild_course_cache($course->id);
 199         if (! $course = get_record('course', 'id', $course->id) ) {
 200             error("That's an invalid course id");
 201         }
 202     }
 203
 204
 205     // Include the actual course format.
 206     require($CFG->dirroot .'/course/format/'. $course->format .'/format.php');
 207     // Content wrapper end.
 208     echo "</div>\n\n";
 209
 210
 211     // Use AJAX?
 212     if ($CFG->useajax && has_capability('moodle/course:manageactivities', $context)) {
 213         // At the bottom because we want to process sections and activities
 214         // after the relevant html has been generated. We're forced to do this
 215         // because of the way in which lib/ajax/ajaxcourse.js is written.
 216         echo '<script type="text/javascript" ';
 217         echo "src=\"{$CFG->wwwroot}/lib/ajax/ajaxcourse.js\"></script>\n";
 218
 219         $COURSE->javascriptportal->print_javascript($course->id);
 220     }
 221
 222
 223     print_footer(NULL, $course);
 224
 225 ?>