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     $bodytags = '';
 127
 128     if (file_exists($ajaxformatfile)) {      // Needs to exist otherwise no AJAX by default
 129
 130         $CFG->ajaxcapable = false;           // May be overridden later by ajaxformatfile
 131         $CFG->ajaxtestedbrowsers = array();  // May be overridden later by ajaxformatfile
 132
 133         require_once($ajaxformatfile);
 134
 135         if (!empty($USER->editing) && $CFG->ajaxcapable && has_capability('moodle/course:manageactivities', $context)) {
 136                                                              // Course-based switches
 137
 138             if (ajaxenabled($CFG->ajaxtestedbrowsers)) {     // Browser, user and site-based switches
 139
 140                 require_js(array('yui_yahoo',
 141                                  'yui_dom',
 142                                  'yui_event',
 143                                  'yui_dragdrop',
 144                                  'yui_connection',
 145                                  'ajaxcourse_blocks',
 146                                  'ajaxcourse_sections'));
 147
 148                 if (debugging('', DEBUG_DEVELOPER)) {
 149                     require_js(array('yui_logger'));
 150
 151                     $bodytags = 'onload = "javascript:
 152                     show_logger = function() {
 153                         var logreader = new YAHOO.widget.LogReader();
 154                         logreader.newestOnTop = false;
 155                         logreader.setTitle(\'Moodle Debug: YUI Log Console\');
 156                     };
 157                     show_logger();
 158                     "';
 159                 }
 160
 161                 // Okay, global variable alert. VERY UGLY. We need to create
 162                 // this object here before the <blockname>_print_block()
 163                 // function is called, since that function needs to set some
 164                 // stuff in the javascriptportal object.
 165                 $COURSE->javascriptportal = new jsportal();
 166                 $CFG->useajax = true;
 167             }
 168         }
 169     }
 170
 171     $CFG->blocksdrag = $CFG->useajax;   // this will add a new class to the header so we can style differently
 172
 173
 174     $PAGE->print_header(get_string('course').': %fullname%', NULL, '', $bodytags);
 175     // Course wrapper start.
 176     echo '<div class="course-content">';
 177
 178
 179     get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
 180
 181     if (! $sections = get_all_sections($course->id)) {   // No sections found
 182         // Double-check to be extra sure
 183         if (! $section = get_record('course_sections', 'course', $course->id, 'section', 0)) {
 184             $section->course = $course->id;   // Create a default section.
 185             $section->section = 0;
 186             $section->visible = 1;
 187             $section->id = insert_record('course_sections', $section);
 188         }
 189         if (! $sections = get_all_sections($course->id) ) {      // Try again
 190             error('Error finding or creating section structures for this course');
 191         }
 192     }
 193
 194
 195     if (empty($course->modinfo)) {
 196         // Course cache was never made.
 197         rebuild_course_cache($course->id);
 198         if (! $course = get_record('course', 'id', $course->id) ) {
 199             error("That's an invalid course id");
 200         }
 201     }
 202
 203
 204     // Include the actual course format.
 205     require($CFG->dirroot .'/course/format/'. $course->format .'/format.php');
 206     // Content wrapper end.
 207     echo "</div>\n\n";
 208
 209
 210     // Use AJAX?
 211     if ($CFG->useajax && has_capability('moodle/course:manageactivities', $context)) {
 212         // At the bottom because we want to process sections and activities
 213         // after the relevant html has been generated. We're forced to do this
 214         // because of the way in which lib/ajax/ajaxcourse.js is written.
 215         echo '<script type="text/javascript" ';
 216         echo "src=\"{$CFG->wwwroot}/lib/ajax/ajaxcourse.js\"></script>\n";
 217
 218         $COURSE->javascriptportal->print_javascript($course->id);
 219     }
 220
 221
 222     print_footer(NULL, $course);
 223
 224 ?>