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     if ($CFG->forcelogin) {
  38         require_login();
  39     } else {
  40         user_accesstime_log();
  41     }
  42
  43     $PAGE->set_url('/');
  44     $PAGE->set_course($SITE);
  45
  46 /// If the site is currently under maintenance, then print a message
  47     if (!empty($CFG->maintenance_enabled) and !has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {
  48         print_maintenance_message();
  49     }
  50
  51     if (has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {
  52         if (moodle_needs_upgrading()) {
  53             redirect($CFG->wwwroot .'/'. $CFG->admin .'/index.php');
  54         }
  55     } else if (get_home_page() != HOMEPAGE_SITE) {
  56         // Redirect logged-in users to My Moodle overview if required
  57         if (optional_param('setdefaulthome', false, PARAM_BOOL)) {
  58             set_user_preference('user_home_page_preference', HOMEPAGE_SITE);
  59         } else if ($CFG->defaulthomepage == HOMEPAGE_MY && optional_param('redirect', true, PARAM_BOOL)) {
  60             redirect($CFG->wwwroot .'/my/');
  61         } else if (!empty($CFG->defaulthomepage) && $CFG->defaulthomepage == HOMEPAGE_USER) {
  62             $PAGE->settingsnav->get('usercurrentsettings')->add(get_string('makethismyhome'), new moodle_url('/', array('setdefaulthome'=>true)), navigation_node::TYPE_SETTING);
  63         }
  64     }
  65
  66     if (isloggedin()) {
  67         add_to_log(SITEID, 'course', 'view', 'view.php?id='.SITEID, SITEID);
  68     }
  69
  70 /// If the hub plugin is installed then we let it take over the homepage here
  71     if (get_config('local_hub', 'hubenabled') && file_exists($CFG->dirroot.'/local/hub/lib.php')) {
  72         require_once($CFG->dirroot.'/local/hub/lib.php');
  73         $hub = new local_hub();
  74         $continue = $hub->display_homepage();
  75         //display_homepage() return true if the hub home page is not displayed
  76         //mostly when search form is not displayed for not logged users
  77         if (empty($continue)) {
  78             exit;
  79         }
  80     }
  81
  82     $PAGE->set_pagetype('site-index');
  83     $PAGE->set_other_editing_capability('moodle/course:manageactivities');
  84     $PAGE->set_docs_path('');
  85     $PAGE->set_pagelayout('frontpage');
  86     $editing = $PAGE->user_is_editing();
  87     $PAGE->set_title($SITE->fullname);
  88     $PAGE->set_heading($SITE->fullname);
  89     echo $OUTPUT->header();
  90
  91 /// Print Section
  92     if ($SITE->numsections > 0) {
  93
  94         if (!$section = $DB->get_record('course_sections', array('course'=>$SITE->id, 'section'=>1))) {
  95             $DB->delete_records('course_sections', array('course'=>$SITE->id, 'section'=>1)); // Just in case
  96             $section->course = $SITE->id;
  97             $section->section = 1;
  98             $section->summary = '';
  99             $section->summaryformat = FORMAT_HTML;
 100             $section->sequence = '';
 101             $section->visible = 1;
 102             $section->id = $DB->insert_record('course_sections', $section);
 103         }
 104
 105         if (!empty($section->sequence) or !empty($section->summary) or $editing) {
 106             echo $OUTPUT->box_start('generalbox sitetopic');
 107
 108             /// If currently moving a file then show the current clipboard
 109             if (ismoving($SITE->id)) {
 110                 $stractivityclipboard = strip_tags(get_string('activityclipboard', '', $USER->activitycopyname));
 111                 echo '<p><font size="2">';
 112                 echo "$stractivityclipboard&nbsp;&nbsp;(<a href=\"course/mod.php?cancelcopy=true&amp;sesskey=".sesskey()."\">". get_string('cancel') .'</a>)';
 113                 echo '</font></p>';
 114             }
 115
 116             $context = get_context_instance(CONTEXT_COURSE, SITEID);
 117             $summarytext = file_rewrite_pluginfile_urls($section->summary, 'pluginfile.php', $context->id, 'course', 'section', $section->id);
 118             $summaryformatoptions = new stdClass();
 119             $summaryformatoptions->noclean = true;
 120             $summaryformatoptions->overflowdiv = true;
 121
 122             echo format_text($summarytext, $section->summaryformat, $summaryformatoptions);
 123
 124             if ($editing) {
 125                 $streditsummary = get_string('editsummary');
 126                 echo "<a title=\"$streditsummary\" ".
 127                      " href=\"course/editsection.php?id=$section->id\"><img src=\"" . $OUTPUT->pix_url('t/edit') . "\" ".
 128                      " class=\"iconsmall\" alt=\"$streditsummary\" /></a><br /><br />";
 129             }
 130
 131             get_all_mods($SITE->id, $mods, $modnames, $modnamesplural, $modnamesused);
 132             print_section($SITE, $section, $mods, $modnamesused, true);
 133
 134             if ($editing) {
 135                 print_section_add_menus($SITE, $section->section, $modnames);
 136             }
 137             echo $OUTPUT->box_end();
 138         }
 139     }
 140
 141     if (isloggedin() and !isguestuser() and isset($CFG->frontpageloggedin)) {
 142         $frontpagelayout = $CFG->frontpageloggedin;
 143     } else {
 144         $frontpagelayout = $CFG->frontpage;
 145     }
 146
 147     foreach (explode(',',$frontpagelayout) as $v) {
 148         switch ($v) {     /// Display the main part of the front page.
 149             case FRONTPAGENEWS:
 150                 if ($SITE->newsitems) { // Print forums only when needed
 151                     require_once($CFG->dirroot .'/mod/forum/lib.php');
 152
 153                     if (! $newsforum = forum_get_course_forum($SITE->id, 'news')) {
 154                         print_error('cannotfindorcreateforum', 'forum');
 155                     }
 156                     echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower($newsforum->name)), array('href'=>'#skipsitenews', 'class'=>'skip-block'));
 157
 158                     if (isloggedin()) {
 159                         $SESSION->fromdiscussion = $CFG->wwwroot;
 160                         $subtext = '';
 161                         if (forum_is_subscribed($USER->id, $newsforum)) {
 162                             if (!forum_is_forcesubscribed($newsforum)) {
 163                                 $subtext = get_string('unsubscribe', 'forum');
 164                             }
 165                         } else {
 166                             $subtext = get_string('subscribe', 'forum');
 167                         }
 168                         echo $OUTPUT->heading($newsforum->name, 2, 'headingblock header');
 169                         $suburl = new moodle_url('/mod/forum/subscribe.php', array('id' => $newsforum->id, 'sesskey' => sesskey()));
 170                         echo html_writer::tag('div', html_writer::link($suburl, $subtext), array('class' => 'subscribelink'));
 171                     } else {
 172                         echo $OUTPUT->heading($newsforum->name, 2, 'headingblock header');
 173                     }
 174
 175                     forum_print_latest_discussions($SITE, $newsforum, $SITE->newsitems, 'plain', 'p.modified DESC');
 176                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipsitenews'));
 177                 }
 178             break;
 179
 180             case FRONTPAGECOURSELIST:
 181                 if (isloggedin() and !has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM)) and !isguestuser() and empty($CFG->disablemycourses)) {
 182                     echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('mycourses'))), array('href'=>'#skipmycourses', 'class'=>'skip-block'));
 183                     echo $OUTPUT->heading(get_string('mycourses'), 2, 'headingblock header');
 184                     print_my_moodle();
 185                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipmycourses'));
 186                 } else if ((!has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM)) and !isguestuser()) or ($DB->count_records('course') <= FRONTPAGECOURSELIMIT)) {
 187                     // admin should not see list of courses when there are too many of them
 188                     echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('availablecourses'))), array('href'=>'#skipavailablecourses', 'class'=>'skip-block'));
 189                     echo $OUTPUT->heading(get_string('availablecourses'), 2, 'headingblock header');
 190                     print_courses(0);
 191                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipavailablecourses'));
 192                 }
 193             break;
 194
 195             case FRONTPAGECATEGORYNAMES:
 196                 echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('categories'))), array('href'=>'#skipcategories', 'class'=>'skip-block'));
 197                 echo $OUTPUT->heading(get_string('categories'), 2, 'headingblock header');
 198                 echo $OUTPUT->box_start('generalbox categorybox');
 199                 print_whole_category_list(NULL, NULL, NULL, -1, false);
 200                 echo $OUTPUT->box_end();
 201                 print_course_search('', false, 'short');
 202                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcategories'));
 203             break;
 204
 205             case FRONTPAGECATEGORYCOMBO:
 206                 echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('courses'))), array('href'=>'#skipcourses', 'class'=>'skip-block'));
 207                 echo $OUTPUT->heading(get_string('courses'), 2, 'headingblock header');
 208                 $renderer = $PAGE->get_renderer('core','course');
 209                 // if there are too many courses, budiling course category tree could be slow,
 210                 // users should go to course index page to see the whole list.
 211                 $coursecount = $DB->count_records('course');
 212                 if (empty($CFG->numcoursesincombo)) {
 213                     // if $CFG->numcoursesincombo hasn't been set, use default value 500
 214                     $CFG->numcoursesincombo = 500;
 215                 }
 216                 if ($coursecount > $CFG->numcoursesincombo) {
 217                     $link = new moodle_url('/course/');
 218                     echo $OUTPUT->notification(get_string('maxnumcoursesincombo', 'moodle', array('link'=>$link->out(), 'maxnumofcourses'=>$CFG->numcoursesincombo, 'numberofcourses'=>$coursecount)));
 219                 } else {
 220                     echo $renderer->course_category_tree(get_course_category_tree());
 221                 }
 222                 print_course_search('', false, 'short');
 223                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcourses'));
 224             break;
 225
 226             case FRONTPAGETOPICONLY:    // Do nothing!!  :-)
 227             break;
 228
 229         }
 230         echo '<br />';
 231     }
 232
 233     echo $OUTPUT->footer();