Moodle release 2.2.11
[moodle.git] / index.php
1 <?php
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/>.
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  */
26     if (!file_exists('./config.php')) {
27         header('Location: install.php');
28         die;
29     }
31     require_once('config.php');
32     require_once($CFG->dirroot .'/course/lib.php');
33     require_once($CFG->libdir .'/filelib.php');
35     redirect_if_major_upgrade_required();
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);
44     if ($CFG->forcelogin) {
45         require_login();
46     } else {
47         user_accesstime_log();
48     }
50     $hassiteconfig = has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));
52 /// If the site is currently under maintenance, then print a message
53     if (!empty($CFG->maintenance_enabled) and !$hassiteconfig) {
54         print_maintenance_message();
55     }
57     if ($hassiteconfig && moodle_needs_upgrading()) {
58         redirect($CFG->wwwroot .'/'. $CFG->admin .'/index.php');
59     }
61     if (get_home_page() != HOMEPAGE_SITE) {
62         // Redirect logged-in users to My Moodle overview if required
63         if (optional_param('setdefaulthome', false, PARAM_BOOL)) {
64             set_user_preference('user_home_page_preference', HOMEPAGE_SITE);
65         } else if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_MY) && optional_param('redirect', 1, PARAM_BOOL) === 1) {
66             redirect($CFG->wwwroot .'/my/');
67         } else if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_USER)) {
68             $PAGE->settingsnav->get('usercurrentsettings')->add(get_string('makethismyhome'), new moodle_url('/', array('setdefaulthome'=>true)), navigation_node::TYPE_SETTING);
69         }
70     }
72     if (isloggedin()) {
73         add_to_log(SITEID, 'course', 'view', 'view.php?id='.SITEID, SITEID);
74     }
76 /// If the hub plugin is installed then we let it take over the homepage here
77     if (get_config('local_hub', 'hubenabled') && file_exists($CFG->dirroot.'/local/hub/lib.php')) {
78         require_once($CFG->dirroot.'/local/hub/lib.php');
79         $hub = new local_hub();
80         $continue = $hub->display_homepage();
81         //display_homepage() return true if the hub home page is not displayed
82         //mostly when search form is not displayed for not logged users
83         if (empty($continue)) {
84             exit;
85         }
86     }
88     $PAGE->set_pagetype('site-index');
89     $PAGE->set_other_editing_capability('moodle/course:manageactivities');
90     $PAGE->set_docs_path('');
91     $PAGE->set_pagelayout('frontpage');
92     $editing = $PAGE->user_is_editing();
93     $PAGE->set_title($SITE->fullname);
94     $PAGE->set_heading($SITE->fullname);
95     echo $OUTPUT->header();
97 /// Print Section or custom info
98     if (!empty($CFG->customfrontpageinclude)) {
99         include($CFG->customfrontpageinclude);
101     } else if ($SITE->numsections > 0) {
103         if (!$section = $DB->get_record('course_sections', array('course'=>$SITE->id, 'section'=>1))) {
104             $DB->delete_records('course_sections', array('course'=>$SITE->id, 'section'=>1)); // Just in case
105             $section->course = $SITE->id;
106             $section->section = 1;
107             $section->summary = '';
108             $section->summaryformat = FORMAT_HTML;
109             $section->sequence = '';
110             $section->visible = 1;
111             $section->id = $DB->insert_record('course_sections', $section);
112         }
114         if (!empty($section->sequence) or !empty($section->summary) or $editing) {
115             echo $OUTPUT->box_start('generalbox sitetopic');
117             /// If currently moving a file then show the current clipboard
118             if (ismoving($SITE->id)) {
119                 $stractivityclipboard = strip_tags(get_string('activityclipboard', '', $USER->activitycopyname));
120                 echo '<p><font size="2">';
121                 echo "$stractivityclipboard&nbsp;&nbsp;(<a href=\"course/mod.php?cancelcopy=true&amp;sesskey=".sesskey()."\">". get_string('cancel') .'</a>)';
122                 echo '</font></p>';
123             }
125             $context = get_context_instance(CONTEXT_COURSE, SITEID);
126             $summarytext = file_rewrite_pluginfile_urls($section->summary, 'pluginfile.php', $context->id, 'course', 'section', $section->id);
127             $summaryformatoptions = new stdClass();
128             $summaryformatoptions->noclean = true;
129             $summaryformatoptions->overflowdiv = true;
131             echo format_text($summarytext, $section->summaryformat, $summaryformatoptions);
133             if ($editing) {
134                 $streditsummary = get_string('editsummary');
135                 echo "<a title=\"$streditsummary\" ".
136                      " href=\"course/editsection.php?id=$section->id\"><img src=\"" . $OUTPUT->pix_url('t/edit') . "\" ".
137                      " class=\"iconsmall\" alt=\"$streditsummary\" /></a><br /><br />";
138             }
140             get_all_mods($SITE->id, $mods, $modnames, $modnamesplural, $modnamesused);
141             print_section($SITE, $section, $mods, $modnamesused, true);
143             if ($editing) {
144                 print_section_add_menus($SITE, $section->section, $modnames);
145             }
146             echo $OUTPUT->box_end();
147         }
148     }
150     if (isloggedin() and !isguestuser() and isset($CFG->frontpageloggedin)) {
151         $frontpagelayout = $CFG->frontpageloggedin;
152     } else {
153         $frontpagelayout = $CFG->frontpage;
154     }
156     foreach (explode(',',$frontpagelayout) as $v) {
157         switch ($v) {     /// Display the main part of the front page.
158             case FRONTPAGENEWS:
159                 if ($SITE->newsitems) { // Print forums only when needed
160                     require_once($CFG->dirroot .'/mod/forum/lib.php');
162                     if (! $newsforum = forum_get_course_forum($SITE->id, 'news')) {
163                         print_error('cannotfindorcreateforum', 'forum');
164                     }
166                     // fetch news forum context for proper filtering to happen
167                     $newsforumcm = get_coursemodule_from_instance('forum', $newsforum->id, $SITE->id, false, MUST_EXIST);
168                     $newsforumcontext = get_context_instance(CONTEXT_MODULE, $newsforumcm->id, MUST_EXIST);
170                     $forumname = format_string($newsforum->name, true, array('context' => $newsforumcontext));
171                     echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(strip_tags($forumname))), array('href'=>'#skipsitenews', 'class'=>'skip-block'));
173                     if (isloggedin()) {
174                         $SESSION->fromdiscussion = $CFG->wwwroot;
175                         $subtext = '';
176                         if (forum_is_subscribed($USER->id, $newsforum)) {
177                             if (!forum_is_forcesubscribed($newsforum)) {
178                                 $subtext = get_string('unsubscribe', 'forum');
179                             }
180                         } else {
181                             $subtext = get_string('subscribe', 'forum');
182                         }
183                         echo $OUTPUT->heading($forumname, 2, 'headingblock header');
184                         $suburl = new moodle_url('/mod/forum/subscribe.php', array('id' => $newsforum->id, 'sesskey' => sesskey()));
185                         echo html_writer::tag('div', html_writer::link($suburl, $subtext), array('class' => 'subscribelink'));
186                     } else {
187                         echo $OUTPUT->heading($forumname, 2, 'headingblock header');
188                     }
190                     forum_print_latest_discussions($SITE, $newsforum, $SITE->newsitems, 'plain', 'p.modified DESC');
191                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipsitenews'));
192                 }
193             break;
195             case FRONTPAGECOURSELIST:
196                 $ncourses = $DB->count_records('course');
197                 if (isloggedin() and !$hassiteconfig and !isguestuser() and empty($CFG->disablemycourses)) {
198                     echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('mycourses'))), array('href'=>'#skipmycourses', 'class'=>'skip-block'));
199                     echo $OUTPUT->heading(get_string('mycourses'), 2, 'headingblock header');
200                     print_my_moodle();
201                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipmycourses'));
202                 } else if ((!$hassiteconfig and !isguestuser()) or ($ncourses <= FRONTPAGECOURSELIMIT)) {
203                     // admin should not see list of courses when there are too many of them
204                     echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('availablecourses'))), array('href'=>'#skipavailablecourses', 'class'=>'skip-block'));
205                     echo $OUTPUT->heading(get_string('availablecourses'), 2, 'headingblock header');
206                     print_courses(0);
207                     echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipavailablecourses'));
208                 } else {
209                     echo html_writer::tag('div', get_string('therearecourses', '', $ncourses), array('class' => 'notifyproblem'));
210                     print_course_search('', false, 'short');
211                 }
212             break;
214             case FRONTPAGECATEGORYNAMES:
215                 echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('categories'))), array('href'=>'#skipcategories', 'class'=>'skip-block'));
216                 echo $OUTPUT->heading(get_string('categories'), 2, 'headingblock header');
217                 echo $OUTPUT->box_start('generalbox categorybox');
218                 print_whole_category_list(NULL, NULL, NULL, -1, false);
219                 echo $OUTPUT->box_end();
220                 print_course_search('', false, 'short');
221                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcategories'));
222             break;
224             case FRONTPAGECATEGORYCOMBO:
225                 echo html_writer::tag('a', get_string('skipa', 'access', moodle_strtolower(get_string('courses'))), array('href'=>'#skipcourses', 'class'=>'skip-block'));
226                 echo $OUTPUT->heading(get_string('courses'), 2, 'headingblock header');
227                 $renderer = $PAGE->get_renderer('core','course');
228                 // if there are too many courses, budiling course category tree could be slow,
229                 // users should go to course index page to see the whole list.
230                 $coursecount = $DB->count_records('course');
231                 if (empty($CFG->numcoursesincombo)) {
232                     // if $CFG->numcoursesincombo hasn't been set, use default value 500
233                     $CFG->numcoursesincombo = 500;
234                 }
235                 if ($coursecount > $CFG->numcoursesincombo) {
236                     $link = new moodle_url('/course/');
237                     echo $OUTPUT->notification(get_string('maxnumcoursesincombo', 'moodle', array('link'=>$link->out(), 'maxnumofcourses'=>$CFG->numcoursesincombo, 'numberofcourses'=>$coursecount)));
238                 } else {
239                     echo $renderer->course_category_tree(get_course_category_tree());
240                 }
241                 print_course_search('', false, 'short');
242                 echo html_writer::tag('span', '', array('class'=>'skip-block-to', 'id'=>'skipcourses'));
243             break;
245             case FRONTPAGETOPICONLY:    // Do nothing!!  :-)
246             break;
248         }
249         echo '<br />';
250     }
252     echo $OUTPUT->footer();