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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Displays a post, and all the posts below it.
* If no post is given, displays all posts in a discussion
*
* @package mod-forum
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once('../../config.php');
$d = required_param('d', PARAM_INT); // Discussion ID
$parent = optional_param('parent', 0, PARAM_INT); // If set, then display this post and all children.
$mode = optional_param('mode', 0, PARAM_INT); // If set, changes the layout of the thread
$move = optional_param('move', 0, PARAM_INT); // If set, moves this discussion to another forum
$mark = optional_param('mark', '', PARAM_ALPHA); // Used for tracking read posts if user initiated.
$postid = optional_param('postid', 0, PARAM_INT); // Used for tracking read posts if user initiated.
$url = new moodle_url('/mod/forum/discuss.php', array('d'=>$d));
if ($parent !== 0) {
$url->param('parent', $parent);
}
$PAGE->set_url($url);
$discussion = $DB->get_record('forum_discussions', array('id' => $d), '*', MUST_EXIST);
$course = $DB->get_record('course', array('id' => $discussion->course), '*', MUST_EXIST);
$forum = $DB->get_record('forum', array('id' => $discussion->forum), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id, false, MUST_EXIST);
require_course_login($course, true, $cm);
/// Add ajax-related libs
$PAGE->requires->yui2_lib('event');
$PAGE->requires->yui2_lib('connection');
$PAGE->requires->yui2_lib('json');
// move this down fix for MDL-6926
require_once($CFG->dirroot.'/mod/forum/lib.php');
$modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
require_capability('mod/forum:viewdiscussion', $modcontext, NULL, true, 'noviewdiscussionspermission', 'forum');
if (!empty($CFG->enablerssfeeds) && !empty($CFG->forum_enablerssfeeds) && $forum->rsstype && $forum->rssarticles) {
require_once("$CFG->libdir/rsslib.php");
$rsstitle = format_string($course->shortname, true, array('context' => get_context_instance(CONTEXT_COURSE, $course->id))) . ': %fullname%';
rss_add_http_header($modcontext, 'mod_forum', $forum, $rsstitle);
}
if ($forum->type == 'news') {
if (!($USER->id == $discussion->userid || (($discussion->timestart == 0
|| $discussion->timestart <= time())
&& ($discussion->timeend == 0 || $discussion->timeend > time())))) {
print_error('invaliddiscussionid', 'forum', "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
}
}
/// move discussion if requested
if ($move > 0 and confirm_sesskey()) {
$return = $CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id;
require_capability('mod/forum:movediscussions', $modcontext);
if ($forum->type == 'single') {
print_error('cannotmovefromsingleforum', 'forum', $return);
}
if (!$forumto = $DB->get_record('forum', array('id' => $move))) {
print_error('cannotmovetonotexist', 'forum', $return);
}
if ($forumto->type == 'single') {
print_error('cannotmovetosingleforum', 'forum', $return);
}
if (!$cmto = get_coursemodule_from_instance('forum', $forumto->id, $course->id)) {
print_error('cannotmovetonotfound', 'forum', $return);
}
if (!coursemodule_visible_for_user($cmto)) {
print_error('cannotmovenotvisible', 'forum', $return);
}
require_capability('mod/forum:startdiscussion', get_context_instance(CONTEXT_MODULE,$cmto->id));
if (!forum_move_attachments($discussion, $forum->id, $forumto->id)) {
echo $OUTPUT->notification("Errors occurred while moving attachment directories - check your file permissions");
}
$DB->set_field('forum_discussions', 'forum', $forumto->id, array('id' => $discussion->id));
$DB->set_field('forum_read', 'forumid', $forumto->id, array('discussionid' => $discussion->id));
add_to_log($course->id, 'forum', 'move discussion', "discuss.php?d=$discussion->id", $discussion->id, $cmto->id);
require_once($CFG->libdir.'/rsslib.php');
require_once($CFG->dirroot.'/mod/forum/rsslib.php');
// Delete the RSS files for the 2 forums to force regeneration of the feeds
forum_rss_delete_file($forum);
forum_rss_delete_file($forumto);
redirect($return.'&moved=-1&sesskey='.sesskey());
}
add_to_log($course->id, 'forum', 'view discussion', $PAGE->url->out(false), $discussion->id, $cm->id);
unset($SESSION->fromdiscussion);
if ($mode) {
set_user_preference('forum_displaymode', $mode);
}
$displaymode = get_user_preferences('forum_displaymode', $CFG->forum_displaymode);
if ($parent) {
// If flat AND parent, then force nested display this time
if ($displaymode == FORUM_MODE_FLATOLDEST or $displaymode == FORUM_MODE_FLATNEWEST) {
$displaymode = FORUM_MODE_NESTED;
}
} else {
$parent = $discussion->firstpost;
}
if (! $post = forum_get_post_full($parent)) {
print_error("notexists", 'forum', "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
}
if (!forum_user_can_view_post($post, $course, $cm, $forum, $discussion)) {
print_error('nopermissiontoview', 'forum', "$CFG->wwwroot/mod/forum/view.php?id=$forum->id");
}
if ($mark == 'read' or $mark == 'unread') {
if ($CFG->forum_usermarksread && forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum)) {
if ($mark == 'read') {
forum_tp_add_read_record($USER->id, $postid);
} else {
// unread
forum_tp_delete_read_records($USER->id, $postid);
}
}
}
$searchform = forum_search_form($course);
$forumnode = $PAGE->navigation->find($cm->id, navigation_node::TYPE_ACTIVITY);
if (empty($forumnode)) {
$forumnode = $PAGE->navbar;
} else {
$forumnode->make_active();
}
$node = $forumnode->add(format_string($discussion->name), new moodle_url('/mod/forum/discuss.php', array('d'=>$discussion->id)));
$node->display = false;
if ($node && $post->id != $discussion->firstpost) {
$node->add(format_string($post->subject), $PAGE->url);
}
$PAGE->set_title("$course->shortname: ".format_string($discussion->name));
$PAGE->set_heading($course->fullname);
$PAGE->set_button($searchform);
echo $OUTPUT->header();
/// Check to see if groups are being used in this forum
/// If so, make sure the current person is allowed to see this discussion
/// Also, if we know they should be able to reply, then explicitly set $canreply for performance reasons
$canreply = forum_user_can_post($forum, $discussion, $USER, $cm, $course, $modcontext);
if (!$canreply and $forum->type !== 'news') {
if (isguestuser() or !isloggedin()) {
$canreply = true;
}
if (!is_enrolled($modcontext) and !is_viewing($modcontext)) {
// allow guests and not-logged-in to see the link - they are prompted to log in after clicking the link
// normal users with temporary guest access see this link too, they are asked to enrol instead
$canreply = enrol_selfenrol_available($course->id);
}
}
/// Print the controls across the top
echo '<div class="discussioncontrols clearfix">';
if (!empty($CFG->enableportfolios) && has_capability('mod/forum:exportdiscussion', $modcontext)) {
require_once($CFG->libdir.'/portfoliolib.php');
$button = new portfolio_add_button();
$button->set_callback_options('forum_portfolio_caller', array('discussionid' => $discussion->id), '/mod/forum/locallib.php');
$button = $button->to_html(PORTFOLIO_ADD_FULL_FORM, get_string('exportdiscussion', 'mod_forum'));
$buttonextraclass = '';
if (empty($button)) {
// no portfolio plugin available.
$button = '&nbsp;';
$buttonextraclass = ' noavailable';
}
echo html_writer::tag('div', $button, array('class' => 'discussioncontrol exporttoportfolio'.$buttonextraclass));
} else {
echo html_writer::tag('div', '&nbsp;', array('class'=>'discussioncontrol nullcontrol'));
}
// groups selector not needed here
echo '<div class="discussioncontrol displaymode">';
forum_print_mode_form($discussion->id, $displaymode);
echo "</div>";
if ($forum->type != 'single'
&& has_capability('mod/forum:movediscussions', $modcontext)) {
echo '<div class="discussioncontrol movediscussion">';
// Popup menu to move discussions to other forums. The discussion in a
// single discussion forum can't be moved.
$modinfo = get_fast_modinfo($course);
if (isset($modinfo->instances['forum'])) {
$forummenu = array();
$sections = get_all_sections($course->id);
// Check forum types and eliminate simple discussions.
$forumcheck = $DB->get_records('forum', array('course' => $course->id),'', 'id, type');
foreach ($modinfo->instances['forum'] as $forumcm) {
if (!$forumcm->uservisible || !has_capability('mod/forum:startdiscussion',
get_context_instance(CONTEXT_MODULE,$forumcm->id))) {
continue;
}
$section = $forumcm->sectionnum;
$sectionname = get_section_name($course, $sections[$section]);
if (empty($forummenu[$section])) {
$forummenu[$section] = array($sectionname => array());
}
$forumidcompare = $forumcm->instance != $forum->id;
$forumtypecheck = $forumcheck[$forumcm->instance]->type !== 'single';
if ($forumidcompare and $forumtypecheck) {
$url = "/mod/forum/discuss.php?d=$discussion->id&move=$forumcm->instance&sesskey=".sesskey();
$forummenu[$section][$sectionname][$url] = format_string($forumcm->name);
}
}
if (!empty($forummenu)) {
echo '<div class="movediscussionoption">';
$select = new url_select($forummenu, '',
array(''=>get_string("movethisdiscussionto", "forum")),
'forummenu', get_string('move'));
echo $OUTPUT->render($select);
echo "</div>";
}
}
echo "</div>";
}
echo '<div class="clearfloat">&nbsp;</div>';
echo "</div>";
if (!empty($forum->blockafter) && !empty($forum->blockperiod)) {
$a = new stdClass();
$a->blockafter = $forum->blockafter;
$a->blockperiod = get_string('secondstotime'.$forum->blockperiod);
echo $OUTPUT->notification(get_string('thisforumisthrottled','forum',$a));
}
if ($forum->type == 'qanda' && !has_capability('mod/forum:viewqandawithoutposting', $modcontext) &&
!forum_user_has_posted($forum->id,$discussion->id,$USER->id)) {
echo $OUTPUT->notification(get_string('qandanotify','forum'));
}
if ($move == -1 and confirm_sesskey()) {
echo $OUTPUT->notification(get_string('discussionmoved', 'forum', format_string($forum->name,true)));
}
$canrate = has_capability('mod/forum:rate', $modcontext);
forum_print_discussion($course, $cm, $forum, $discussion, $post, $displaymode, $canreply, $canrate);
echo $OUTPUT->footer();
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