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