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Differences Between: [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   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();