index.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Moodle frontpage.
  20  *
  21  * @package    core
  22  * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26     if (!file_exists('./config.php')) {
  27         header('Location: install.php');
  28         die;
  29     }
  30
  31     require_once('config.php');
  32     require_once($CFG->dirroot .'/course/lib.php');
  33     require_once($CFG->libdir .'/filelib.php');
  34
  35     redirect_if_major_upgrade_required();
  36
  37     $urlparams = array();
  38     if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_MY) && optional_param('redirect', 1, PARAM_BOOL) === 0) {
  39         $urlparams['redirect'] = 0;
  40     }
  41     $PAGE->set_url('/', $urlparams);
  42     $PAGE->set_course($SITE);
  43
  44     // Prevent caching of this page to stop confusion when changing page after making AJAX changes
  45     $PAGE->set_cacheable(false);
  46
  47     if ($CFG->forcelogin) {
  48         require_login();
  49     } else {
  50         user_accesstime_log();
  51     }
  52
  53     $hassiteconfig = has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));
  54
  55 /// If the site is currently under maintenance, then print a message
  56     if (!empty($CFG->maintenance_enabled) and !$hassiteconfig) {
  57         print_maintenance_message();
  58     }
  59
  60     if ($hassiteconfig && moodle_needs_upgrading()) {
  61         redirect($CFG->wwwroot .'/'. $CFG->admin .'/index.php');
  62     }
  63
  64     if (get_home_page() != HOMEPAGE_SITE) {
  65         // Redirect logged-in users to My Moodle overview if required
  66         if (optional_param('setdefaulthome', false, PARAM_BOOL)) {
  67             set_user_preference('user_home_page_preference', HOMEPAGE_SITE);
  68         } else if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_MY) && optional_param('redirect', 1, PARAM_BOOL) === 1) {
  69             redirect($CFG->wwwroot .'/my/');
  70         } else if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_USER)) {
  71             $PAGE->settingsnav->get('usercurrentsettings')->add(get_string('makethismyhome'), new moodle_url('/', array('setdefaulthome'=>true)), navigation_node::TYPE_SETTING);
  72         }
  73     }
  74
  75     if (isloggedin()) {
  76         add_to_log(SITEID, 'course', 'view', 'view.php?id='.SITEID, SITEID);
  77     }
  78
  79 /// If the hub plugin is installed then we let it take over the homepage here
  80     if (file_exists($CFG->dirroot.'/local/hub/lib.php') and get_config('local_hub', 'hubenabled')) {
  81         require_once($CFG->dirroot.'/local/hub/lib.php');
  82         $hub = new local_hub();
  83         $continue = $hub->display_homepage();
  84         //display_homepage() return true if the hub home page is not displayed
  85         //mostly when search form is not displayed for not logged users
  86         if (empty($continue)) {
  87             exit;
  88         }
  89     }
  90
  91     $PAGE->set_pagetype('site-index');
  92     $PAGE->set_other_editing_capability('moodle/course:manageactivities');
  93     $PAGE->set_docs_path('');
  94     $PAGE->set_pagelayout('frontpage');
  95     $editing = $PAGE->user_is_editing();
  96     $PAGE->set_title($SITE->fullname);
  97     $PAGE->set_heading($SITE->fullname);
  98     echo $OUTPUT->header();
  99
 100 /// Print Section or custom info
 101     get_all_mods($SITE->id, $mods, $modnames, $modnamesplural, $modnamesused);
 102     if (!empty($CFG->customfrontpageinclude)) {
 103         include($CFG->customfrontpageinclude);
 104
 105     } else if ($SITE->numsections > 0) {
 106
 107         if (!$section = $DB->get_record('course_sections', array('course'=>$SITE->id, 'section'=>1))) {
 108             $DB->delete_records('course_sections', array('course'=>$SITE->id, 'section'=>1)); // Just in case
 109             $section = new stdClass();
 110             $section->course = $SITE->id;
 111             $section->section = 1;
 112             $section->summary = '';
 113             $section->summaryformat = FORMAT_HTML;
 114             $section->sequence = '';
 115             $section->visible = 1;
 116             $section->id = $DB->insert_record('course_sections', $section);
 117             rebuild_course_cache($SITE->id, true);
 118         }
 119
 120         if (!empty($section->sequence) or !empty($section->summary) or $editing) {
 121             echo $OUTPUT->box_start('generalbox sitetopic');
 122
 123             /// If currently moving a file then show the current clipboard
 124             if (ismoving($SITE->id)) {
 125                 $stractivityclipboard = strip_tags(get_string('activityclipboard', '', $USER->activitycopyname));
 126                 echo '<p><font size="2">';
 127                 echo "$stractivityclipboard&nbsp;&nbsp;(<a href=\"course/mod.php?cancelcopy=true&amp;sesskey=".sesskey()."\">". get_string('cancel') .'</a>)';
 128                 echo '</font></p>';
 129             }
 130
 131             $context = get_context_instance(CONTEXT_COURSE, SITEID);
 132             $summarytext = file_rewrite_pluginfile_urls($section->summary, 'pluginfile.php', $context->id, 'course', 'section', $section->id);
 133             $summaryformatoptions = new stdClass();
 134             $summaryformatoptions->noclean = true;
 135             $summaryformatoptions->overflowdiv = true;
 136
 137             echo format_text($summarytext, $section->summaryformat, $summaryformatoptions);
 138
 139             if ($editing) {
 140                 $streditsummary = get_string('editsummary');
 141                 echo "<a title=\"$streditsummary\" ".
 142                      " href=\"course/editsection.php?id=$section->id\"><img src=\"" . $OUTPUT->pix_url('t/edit') . "\" ".
 143                      " class=\"iconsmall\" alt=\"$streditsummary\" /></a><br /><br />";
 144             }
 145
 146             print_section($SITE, $section, $mods, $modnamesused, true);
 147
 148             if ($editing) {
 149                 print_section_add_menus($SITE, $section->section, $modnames);
 150             }
 151             echo $OUTPUT->box_end();
 152         }
 153     }
 154     // Include course AJAX
 155     if (include_course_ajax($SITE, $modnamesused)) {
 156         // Add the module chooser
 157         $renderer = $PAGE->get_renderer('core', 'course');
 158         echo $renderer->course_modchooser(get_module_metadata($SITE, $modnames), $SITE);
 159     }
 160
 161     if (isloggedin() and !isguestuser() and isset($CFG->frontpageloggedin)) {
 162         $frontpagelayout = $CFG->frontpageloggedin;
 163     } else {
 164         $frontpagelayout = $CFG->frontpage;
 165     }
 166
 167     foreach (explode(',',$frontpagelayout) as $v) {
 168         switch ($v) {     /// Display the main part of the front page.
 169             case FRONTPAGENEWS:
 170                 if ($SITE->newsitems) { // Print forums only when needed
 171                     require_once($CFG->dirroot .'/mod/forum/lib.php');
 172
 173                     if (! $newsforum = forum_get_course_forum($SITE->id, 'news')) {
 174                         print_error('cannotfindorcreateforum', 'forum');
 175                     }
 176
 177                     // fetch news forum context for proper filtering to happen
 178                     $newsforumcm = get_coursemodule_from_instance('forum', $newsforum->id, $SITE->id, false, MUST_EXIST);
 179                     $newsforumcontext = get_context_instance(CONTEXT_MODULE, $newsforumcm->id, MUST_EXIST);
 180
 181                     $forumname = format_string($newsforum->name, true, array('context' => $newsforumcontext));
 182                     echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(strip_tags($forumname))), array('href'=>'#skipsitenews', 'class'=>'skip-block'));
 183
 184                     if (isloggedin()) {
 185                         $SESSION->fromdiscussion = $CFG->wwwroot;
 186                         $subtext = '';
 187                         if (forum_is_subscribed($USER->id, $newsforum)) {
 188                             if (!forum_is_forcesubscribed($newsforum)) {
 189                                 $subtext = get_string('unsubscribe', 'forum');
 190                             }
 191                         } else {
 192                             $subtext = get_string('subscribe', 'forum');
 193                         }
 194                         echo $OUTPUT->heading($forumname, 2, 'headingblock header');
 195                         $suburl = new moodle_url('/mod/forum/subscribe.php', array('id' => $newsforum->id, 'sesskey' => sesskey()));
 196                         echo html_writer::tag('div', html_writer::link($suburl, $subtext), array('class' => 'subscribelink'));
 197                     } else {
 198                         echo $OUTPUT->heading($forumname, 2, 'headingblock header');
 199                     }
 200
 201                     forum_print_latest_discussions($SITE, $newsforum, $SITE->newsitems, 'plain', 'p.modified DESC');
 202                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipsitenews'));
 203                 }
 204             break;
 205
 206             case FRONTPAGECOURSELIST:
 207                 if (isloggedin() and !$hassiteconfig and !isguestuser() and empty($CFG->disablemycourses)) {
 208                     echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('mycourses'))), array('href'=>'#skipmycourses', 'class'=>'skip-block'));
 209                     echo $OUTPUT->heading(get_string('mycourses'), 2, 'headingblock header');
 210                     print_my_moodle();
 211                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipmycourses'));
 212                 } else if ((!$hassiteconfig and !isguestuser()) or ($DB->count_records('course') <= FRONTPAGECOURSELIMIT)) {
 213                     // admin should not see list of courses when there are too many of them
 214                     echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('availablecourses'))), array('href'=>'#skipavailablecourses', 'class'=>'skip-block'));
 215                     echo $OUTPUT->heading(get_string('availablecourses'), 2, 'headingblock header');
 216                     print_courses(0);
 217                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipavailablecourses'));
 218                 }
 219             break;
 220
 221             case FRONTPAGECATEGORYNAMES:
 222                 echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('categories'))), array('href'=>'#skipcategories', 'class'=>'skip-block'));
 223                 echo $OUTPUT->heading(get_string('categories'), 2, 'headingblock header');
 224                 echo $OUTPUT->box_start('generalbox categorybox');
 225                 print_whole_category_list(NULL, NULL, NULL, -1, false);
 226                 echo $OUTPUT->box_end();
 227                 print_course_search('', false, 'short');
 228                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcategories'));
 229             break;
 230
 231             case FRONTPAGECATEGORYCOMBO:
 232                 echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('courses'))), array('href'=>'#skipcourses', 'class'=>'skip-block'));
 233                 echo $OUTPUT->heading(get_string('courses'), 2, 'headingblock header');
 234                 $renderer = $PAGE->get_renderer('core','course');
 235                 // if there are too many courses, budiling course category tree could be slow,
 236                 // users should go to course index page to see the whole list.
 237                 $coursecount = $DB->count_records('course');
 238                 if (empty($CFG->numcoursesincombo)) {
 239                     // if $CFG->numcoursesincombo hasn't been set, use default value 500
 240                     $CFG->numcoursesincombo = 500;
 241                 }
 242                 if ($coursecount > $CFG->numcoursesincombo) {
 243                     $link = new moodle_url('/course/');
 244                     echo $OUTPUT->notification(get_string('maxnumcoursesincombo', 'moodle', array('link'=>$link->out(), 'maxnumofcourses'=>$CFG->numcoursesincombo, 'numberofcourses'=>$coursecount)));
 245                 } else {
 246                     echo $renderer->course_category_tree(get_course_category_tree());
 247                 }
 248                 print_course_search('', false, 'short');
 249                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcourses'));
 250             break;
 251
 252             case FRONTPAGETOPICONLY:    // Do nothing!!  :-)
 253             break;
 254
 255         }
 256         echo '<br />';
 257     }
 258
 259     echo $OUTPUT->footer();