blog/index.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * file index.php
  19  * index page to view blogs. if no blog is specified then site wide entries are shown
  20  * if a blog id is specified then the latest entries from that blog are shown
  21  */
  22
  23 require_once(__DIR__ . '/../config.php');
  24 require_once($CFG->dirroot .'/blog/lib.php');
  25 require_once($CFG->dirroot .'/blog/locallib.php');
  26 require_once($CFG->dirroot .'/course/lib.php');
  27 require_once($CFG->dirroot .'/comment/lib.php');
  28
  29 $id       = optional_param('id', null, PARAM_INT);
  30 $start    = optional_param('formstart', 0, PARAM_INT);
  31 $tag      = optional_param('tag', '', PARAM_NOTAGS);
  32 $userid   = optional_param('userid', null, PARAM_INT);
  33 $tagid    = optional_param('tagid', null, PARAM_INT);
  34 $modid    = optional_param('modid', null, PARAM_INT);
  35 $entryid  = optional_param('entryid', null, PARAM_INT);
  36 $groupid  = optional_param('groupid', null, PARAM_INT);
  37 $courseid = optional_param('courseid', null, PARAM_INT);
  38 $search   = optional_param('search', null, PARAM_RAW);
  39
  40 comment::init();
  41
  42 $urlparams = compact('id', 'start', 'tag', 'userid', 'tagid', 'modid', 'entryid', 'groupid', 'courseid', 'search');
  43 foreach ($urlparams as $var => $val) {
  44     if (empty($val)) {
  45         unset($urlparams[$var]);
  46     }
  47 }
  48 $PAGE->set_url('/blog/index.php', $urlparams);
  49
  50 // Correct tagid if a text tag is provided as a param.
  51 if (!empty($tag)) {
  52     if ($tagrec = $DB->get_record('tag', array('name' => $tag))) {
  53         $tagid = $tagrec->id;
  54     } else {
  55         unset($tagid);
  56     }
  57 }
  58
  59 // Set the userid to the entry author if we have the entry ID.
  60 if ($entryid and !isset($userid)) {
  61     $entry = new blog_entry($entryid);
  62     $userid = $entry->userid;
  63 }
  64
  65 if (isset($userid) && empty($courseid) && empty($modid)) {
  66     $context = context_user::instance($userid);
  67 } else if (!empty($courseid) && $courseid != SITEID) {
  68     $context = context_course::instance($courseid);
  69 } else {
  70     $context = context_system::instance();
  71 }
  72 $PAGE->set_context($context);
  73
  74 if (isset($userid) && $USER->id == $userid) {
  75     $blognode = $PAGE->navigation->find('siteblog', null);
  76     if ($blognode) {
  77         $blognode->make_inactive();
  78     }
  79 }
  80
  81 // Check basic permissions.
  82 if ($CFG->bloglevel == BLOG_GLOBAL_LEVEL) {
  83     // Everybody can see anything - no login required unless site is locked down using forcelogin.
  84     if ($CFG->forcelogin) {
  85         require_login();
  86     }
  87
  88 } else if ($CFG->bloglevel == BLOG_SITE_LEVEL) {
  89     // Users must log in and can not be guests.
  90     require_login();
  91     if (isguestuser()) {
  92         // They must have entered the url manually.
  93         print_error('noguest');
  94     }
  95
  96 } else if ($CFG->bloglevel == BLOG_USER_LEVEL) {
  97     // Users can see own blogs only! with the exception of people with special cap.
  98     require_login();
  99
 100 } else {
 101     // Weird!
 102     print_error('blogdisable', 'blog');
 103 }
 104
 105 if (empty($CFG->enableblogs)) {
 106     print_error('blogdisable', 'blog');
 107 }
 108
 109 list($courseid, $userid) = blog_validate_access($courseid, $modid, $groupid, $entryid, $userid);
 110
 111 $courseid = (empty($courseid)) ? SITEID : $courseid;
 112
 113 if ($courseid != SITEID) {
 114     $course = get_course($courseid);
 115     require_login($course);
 116 }
 117
 118 if (!empty($userid)) {
 119     $user = core_user::get_user($userid);
 120     $PAGE->navigation->extend_for_user($user);
 121 }
 122
 123 $blogheaders = blog_get_headers();
 124
 125 $rsscontext = null;
 126 $filtertype = null;
 127 $thingid = null;
 128 $rsstitle = '';
 129 if ($CFG->enablerssfeeds) {
 130     list($thingid, $rsscontext, $filtertype) = blog_rss_get_params($blogheaders['filters']);
 131     if (empty($rsscontext)) {
 132         $rsscontext = context_system::instance();
 133     }
 134     $rsstitle = $blogheaders['heading'];
 135
 136     // Check we haven't started output by outputting an error message.
 137     if ($PAGE->state == moodle_page::STATE_BEFORE_HEADER) {
 138         blog_rss_add_http_header($rsscontext, $rsstitle, $filtertype, $thingid, $tagid);
 139     }
 140 }
 141
 142 $usernode = $PAGE->navigation->find('user'.$userid, null);
 143 if ($usernode && $courseid != SITEID) {
 144     $courseblogsnode = $PAGE->navigation->find('courseblogs', null);
 145     if ($courseblogsnode) {
 146         $courseblogsnode->remove();
 147     }
 148     $blogurl = new moodle_url($PAGE->url);
 149     $blognode = $usernode->add(get_string('blogscourse', 'blog'), $blogurl);
 150     $blognode->make_active();
 151 }
 152
 153 if ($courseid != SITEID) {
 154     $PAGE->set_heading($course->fullname);
 155     echo $OUTPUT->header();
 156     if (!empty($user)) {
 157         $headerinfo = array('heading' => fullname($user), 'user' => $user);
 158         echo $OUTPUT->context_header($headerinfo, 2);
 159     }
 160 } else if (isset($userid)) {
 161     $PAGE->set_heading(fullname($user));
 162     echo $OUTPUT->header();
 163 } else if ($courseid == SITEID) {
 164     echo $OUTPUT->header();
 165 }
 166
 167 echo $OUTPUT->heading($blogheaders['heading'], 2);
 168
 169 $bloglisting = new blog_listing($blogheaders['filters']);
 170 $bloglisting->print_entries();
 171
 172 if ($CFG->enablerssfeeds) {
 173     blog_rss_print_link($rsscontext, $filtertype, $thingid, $tagid, get_string('rssfeed', 'blog'));
 174 }
 175
 176 echo $OUTPUT->footer();
 177 $eventparams = array(
 178     'other' => array('entryid' => $entryid, 'tagid' => $tagid, 'userid' => $userid, 'modid' => $modid, 'groupid' => $groupid,
 179                      'search' => $search, 'fromstart' => $start)
 180 );
 181 if (!empty($userid)) {
 182     $eventparams['relateduserid'] = $userid;
 183 }
 184 $eventparams['other']['courseid'] = ($courseid === SITEID) ? 0 : $courseid;
 185 $event = \core\event\blog_entries_viewed::create($eventparams);
 186 $event->trigger();