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     $PAGE->set_other_editing_capability('moodle/course:update');
  44     $PAGE->set_other_editing_capability('moodle/course:manageactivities');
  45     $PAGE->set_other_editing_capability('moodle/course:activityvisibility');
  46
  47     // Prevent caching of this page to stop confusion when changing page after making AJAX changes
  48     $PAGE->set_cacheable(false);
  49
  50     if ($CFG->forcelogin) {
  51         require_login();
  52     } else {
  53         user_accesstime_log();
  54     }
  55
  56     $hassiteconfig = has_capability('moodle/site:config', context_system::instance());
  57
  58 /// If the site is currently under maintenance, then print a message
  59     if (!empty($CFG->maintenance_enabled) and !$hassiteconfig) {
  60         print_maintenance_message();
  61     }
  62
  63     if ($hassiteconfig && moodle_needs_upgrading()) {
  64         redirect($CFG->wwwroot .'/'. $CFG->admin .'/index.php');
  65     }
  66
  67     if (get_home_page() != HOMEPAGE_SITE) {
  68         // Redirect logged-in users to My Moodle overview if required
  69         if (optional_param('setdefaulthome', false, PARAM_BOOL)) {
  70             set_user_preference('user_home_page_preference', HOMEPAGE_SITE);
  71         } else if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_MY) && optional_param('redirect', 1, PARAM_BOOL) === 1) {
  72             redirect($CFG->wwwroot .'/my/');
  73         } else if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_USER)) {
  74             $PAGE->settingsnav->get('usercurrentsettings')->add(get_string('makethismyhome'), new moodle_url('/', array('setdefaulthome'=>true)), navigation_node::TYPE_SETTING);
  75         }
  76     }
  77
  78     if (isloggedin()) {
  79         add_to_log(SITEID, 'course', 'view', 'view.php?id='.SITEID, SITEID);
  80     }
  81
  82 /// If the hub plugin is installed then we let it take over the homepage here
  83     if (file_exists($CFG->dirroot.'/local/hub/lib.php') and get_config('local_hub', 'hubenabled')) {
  84         require_once($CFG->dirroot.'/local/hub/lib.php');
  85         $hub = new local_hub();
  86         $continue = $hub->display_homepage();
  87         //display_homepage() return true if the hub home page is not displayed
  88         //mostly when search form is not displayed for not logged users
  89         if (empty($continue)) {
  90             exit;
  91         }
  92     }
  93
  94     $PAGE->set_pagetype('site-index');
  95     $PAGE->set_docs_path('');
  96     $PAGE->set_pagelayout('frontpage');
  97     $editing = $PAGE->user_is_editing();
  98     $PAGE->set_title($SITE->fullname);
  99     $PAGE->set_heading($SITE->fullname);
 100     echo $OUTPUT->header();
 101
 102 /// Print Section or custom info
 103     $siteformatoptions = course_get_format($SITE)->get_format_options();
 104     $modinfo = get_fast_modinfo($SITE);
 105     $modnames = get_module_types_names();
 106     $modnamesplural = get_module_types_names(true);
 107     $modnamesused = $modinfo->get_used_module_names();
 108     $mods = $modinfo->get_cms();
 109
 110     if (!empty($CFG->customfrontpageinclude)) {
 111         include($CFG->customfrontpageinclude);
 112
 113     } else if ($siteformatoptions['numsections'] > 0) {
 114         if ($editing) {
 115             // make sure section with number 1 exists
 116             course_create_sections_if_missing($SITE, 1);
 117             // re-request modinfo in case section was created
 118             $modinfo = get_fast_modinfo($SITE);
 119         }
 120         $section = $modinfo->get_section_info(1);
 121         if (($section && (!empty($modinfo->sections[1]) or !empty($section->summary))) or $editing) {
 122             echo $OUTPUT->box_start('generalbox sitetopic');
 123
 124             /// If currently moving a file then show the current clipboard
 125             if (ismoving($SITE->id)) {
 126                 $stractivityclipboard = strip_tags(get_string('activityclipboard', '', $USER->activitycopyname));
 127                 echo '<p><font size="2">';
 128                 echo "$stractivityclipboard&nbsp;&nbsp;(<a href=\"course/mod.php?cancelcopy=true&amp;sesskey=".sesskey()."\">". get_string('cancel') .'</a>)';
 129                 echo '</font></p>';
 130             }
 131
 132             $context = context_course::instance(SITEID);
 133             $summarytext = file_rewrite_pluginfile_urls($section->summary, 'pluginfile.php', $context->id, 'course', 'section', $section->id);
 134             $summaryformatoptions = new stdClass();
 135             $summaryformatoptions->noclean = true;
 136             $summaryformatoptions->overflowdiv = true;
 137
 138             echo format_text($summarytext, $section->summaryformat, $summaryformatoptions);
 139
 140             if ($editing && has_capability('moodle/course:update', $context)) {
 141                 $streditsummary = get_string('editsummary');
 142                 echo "<a title=\"$streditsummary\" ".
 143                      " href=\"course/editsection.php?id=$section->id\"><img src=\"" . $OUTPUT->pix_url('t/edit') . "\" ".
 144                      " class=\"iconsmall\" alt=\"$streditsummary\" /></a><br /><br />";
 145             }
 146
 147             print_section($SITE, $section, $mods, $modnamesused, true);
 148
 149             if ($editing) {
 150                 print_section_add_menus($SITE, $section->section, $modnames);
 151             }
 152             echo $OUTPUT->box_end();
 153         }
 154     }
 155     // Include course AJAX
 156     if (include_course_ajax($SITE, $modnamesused)) {
 157         // Add the module chooser
 158         $renderer = $PAGE->get_renderer('core', 'course');
 159         echo $renderer->course_modchooser(get_module_metadata($SITE, $modnames), $SITE);
 160     }
 161
 162     if (isloggedin() and !isguestuser() and isset($CFG->frontpageloggedin)) {
 163         $frontpagelayout = $CFG->frontpageloggedin;
 164     } else {
 165         $frontpagelayout = $CFG->frontpage;
 166     }
 167
 168     foreach (explode(',',$frontpagelayout) as $v) {
 169         switch ($v) {     /// Display the main part of the front page.
 170             case FRONTPAGENEWS:
 171                 if ($SITE->newsitems) { // Print forums only when needed
 172                     require_once($CFG->dirroot .'/mod/forum/lib.php');
 173
 174                     if (! $newsforum = forum_get_course_forum($SITE->id, 'news')) {
 175                         print_error('cannotfindorcreateforum', 'forum');
 176                     }
 177
 178                     // fetch news forum context for proper filtering to happen
 179                     $newsforumcm = get_coursemodule_from_instance('forum', $newsforum->id, $SITE->id, false, MUST_EXIST);
 180                     $newsforumcontext = context_module::instance($newsforumcm->id, MUST_EXIST);
 181
 182                     $forumname = format_string($newsforum->name, true, array('context' => $newsforumcontext));
 183                     echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(strip_tags($forumname))), array('href'=>'#skipsitenews', 'class'=>'skip-block'));
 184
 185                     if (isloggedin()) {
 186                         $SESSION->fromdiscussion = $CFG->wwwroot;
 187                         $subtext = '';
 188                         if (forum_is_subscribed($USER->id, $newsforum)) {
 189                             if (!forum_is_forcesubscribed($newsforum)) {
 190                                 $subtext = get_string('unsubscribe', 'forum');
 191                             }
 192                         } else {
 193                             $subtext = get_string('subscribe', 'forum');
 194                         }
 195                         echo $OUTPUT->heading($forumname, 2, 'headingblock header');
 196                         $suburl = new moodle_url('/mod/forum/subscribe.php', array('id' => $newsforum->id, 'sesskey' => sesskey()));
 197                         echo html_writer::tag('div', html_writer::link($suburl, $subtext), array('class' => 'subscribelink'));
 198                     } else {
 199                         echo $OUTPUT->heading($forumname, 2, 'headingblock header');
 200                     }
 201
 202                     forum_print_latest_discussions($SITE, $newsforum, $SITE->newsitems, 'plain', 'p.modified DESC');
 203                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipsitenews'));
 204                 }
 205             break;
 206
 207             case FRONTPAGECOURSELIST:
 208                 $ncourses = $DB->count_records('course');
 209                 if (isloggedin() and !$hassiteconfig and !isguestuser() and empty($CFG->disablemycourses)) {
 210                     echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('mycourses'))), array('href'=>'#skipmycourses', 'class'=>'skip-block'));
 211                     echo $OUTPUT->heading(get_string('mycourses'), 2, 'headingblock header');
 212                     print_my_moodle();
 213                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipmycourses'));
 214                 } else if ((!$hassiteconfig and !isguestuser()) or ($ncourses <= FRONTPAGECOURSELIMIT)) {
 215                     // admin should not see list of courses when there are too many of them
 216                     echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('availablecourses'))), array('href'=>'#skipavailablecourses', 'class'=>'skip-block'));
 217                     echo $OUTPUT->heading(get_string('availablecourses'), 2, 'headingblock header');
 218                     print_courses(0);
 219                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipavailablecourses'));
 220                 } else {
 221                     echo html_writer::tag('div', get_string('therearecourses', '', $ncourses), array('class' => 'notifyproblem'));
 222                     print_course_search('', false, 'short');
 223                 }
 224             break;
 225
 226             case FRONTPAGECATEGORYNAMES:
 227                 echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('categories'))), array('href'=>'#skipcategories', 'class'=>'skip-block'));
 228                 echo $OUTPUT->heading(get_string('categories'), 2, 'headingblock header');
 229                 echo $OUTPUT->box_start('generalbox categorybox');
 230                 print_whole_category_list(NULL, NULL, NULL, -1, false);
 231                 echo $OUTPUT->box_end();
 232                 print_course_search('', false, 'short');
 233                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcategories'));
 234             break;
 235
 236             case FRONTPAGECATEGORYCOMBO:
 237                 echo html_writer::tag('a', get_string('skipa', 'access', textlib::strtolower(get_string('courses'))), array('href'=>'#skipcourses', 'class'=>'skip-block'));
 238                 echo $OUTPUT->heading(get_string('courses'), 2, 'headingblock header');
 239                 $renderer = $PAGE->get_renderer('core','course');
 240                 // if there are too many courses, budiling course category tree could be slow,
 241                 // users should go to course index page to see the whole list.
 242                 $coursecount = $DB->count_records('course');
 243                 if (empty($CFG->numcoursesincombo)) {
 244                     // if $CFG->numcoursesincombo hasn't been set, use default value 500
 245                     $CFG->numcoursesincombo = 500;
 246                 }
 247                 if ($coursecount > $CFG->numcoursesincombo) {
 248                     $link = new moodle_url('/course/');
 249                     echo $OUTPUT->notification(get_string('maxnumcoursesincombo', 'moodle', array('link'=>$link->out(), 'maxnumofcourses'=>$CFG->numcoursesincombo, 'numberofcourses'=>$coursecount)));
 250                 } else {
 251                     echo $renderer->course_category_tree(get_course_category_tree());
 252                 }
 253                 print_course_search('', false, 'short');
 254                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcourses'));
 255             break;
 256
 257             case FRONTPAGETOPICONLY:    // Do nothing!!  :-)
 258             break;
 259
 260         }
 261         echo '<br />';
 262     }
 263
 264     echo $OUTPUT->footer();