Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/forum/viewforum.php

693 lines
27 KiB

<?php
/* For licensing terms, see /license.txt */
/**
* These files are a complete rework of the forum. The database structure is
* based on phpBB but all the code is rewritten. A lot of new functionalities
* are added:
* - forum categories and forums can be sorted up or down, locked or made invisible
* - consistent and integrated forum administration
* - forum options: are students allowed to edit their post?
* moderation of posts (approval)
* reply only forums (students cannot create new threads)
* multiple forums per group
* - sticky messages
* - new view option: nested view
* - quoting a message
*
* @Author Patrick Cool <patrick.cool@UGent.be>, Ghent University
* @Copyright Ghent University
* @Copyright Patrick Cool
*
* @package chamilo.forum
*/
use ChamiloSession as Session;
// Including the global initialization file.
require_once '../inc/global.inc.php';
$current_course_tool = TOOL_FORUM;
// Notification for unauthorized people.
api_protect_course_script(true);
// The section (tabs).
$this_section = SECTION_COURSES;
$nameTools = get_lang('ToolForum');
// Are we in a lp ?
$origin = '';
$origin_string = '';
if (isset($_GET['origin'])) {
$origin = Security::remove_XSS($_GET['origin']);
$origin_string = '&origin='.$origin;
}
/* Including necessary files */
require 'forumconfig.inc.php';
require_once 'forumfunction.inc.php';
$userid = api_get_user_id();
/* MAIN DISPLAY SECTION */
$groupId = api_get_group_id();
$my_forum = isset($_GET['forum']) ? $_GET['forum'] : '';
// Note: This has to be validated that it is an existing forum.
$current_forum = get_forum_information($my_forum);
if (empty($current_forum)) {
api_not_allowed();
}
$current_forum_category = get_forumcategory_information($current_forum['forum_category']);
$is_group_tutor = false;
if (!empty($groupId)) {
//Group info & group category info
$group_properties = GroupManager::get_group_properties($groupId);
//User has access in the group?
$user_has_access_in_group = GroupManager::user_has_access($userid, $groupId, GroupManager::GROUP_TOOL_FORUM);
$is_group_tutor = GroupManager::is_tutor_of_group(api_get_user_id(), $groupId);
//Course
if (
!api_is_allowed_to_edit(false, true) AND //is a student
(($current_forum_category && $current_forum_category['visibility'] == 0) OR
$current_forum['visibility'] == 0 OR !$user_has_access_in_group)
) {
api_not_allowed(true);
}
} else {
//Course
if (
!api_is_allowed_to_edit(false, true) AND //is a student
(
($current_forum_category && $current_forum_category['visibility'] == 0) OR
$current_forum['visibility'] == 0
) //forum category or forum visibility is false
) {
api_not_allowed();
}
}
/* Header and Breadcrumbs */
$my_search = isset($_GET['search']) ? $_GET['search'] : '';
$my_action = isset($_GET['action']) ? $_GET['action'] : '';
$gradebook = null;
if (isset($_SESSION['gradebook'])){
$gradebook = $_SESSION['gradebook'];
}
if (!empty($gradebook) && $gradebook == 'view') {
$interbreadcrumb[] = array (
'url' => '../gradebook/'.$_SESSION['gradebook_dest'],
'name' => get_lang('ToolGradebook')
);
}
if (!empty($_GET['gidReq'])) {
$toolgroup = Database::escape_string($_GET['gidReq']);
Session::write('toolgroup',$toolgroup);
}
$forumUrl = api_get_path(WEB_CODE_PATH).'forum/';
if ($origin == 'group') {
$interbreadcrumb[] = array(
'url' => api_get_path(WEB_CODE_PATH) . 'group/group.php',
'name' => get_lang('Groups')
);
$interbreadcrumb[] = array(
'url' => api_get_path(WEB_CODE_PATH) . 'group/group_space.php?' . api_get_cidreq(),
'name' => get_lang('GroupSpace') . ' ' . $group_properties['name']
);
$interbreadcrumb[] = array(
'url' => '#',
'name' => get_lang('Forum') . ' ' . Security::remove_XSS($current_forum['forum_title'])
);
} else {
$interbreadcrumb[] = array(
'url' => $forumUrl . 'index.php?search=' . Security::remove_XSS($my_search),
'name' => get_lang('ForumCategories')
);
$interbreadcrumb[] = array(
'url' => $forumUrl . 'viewforumcategory.php?forumcategory=' . $current_forum_category['cat_id']
. '&search=' . Security::remove_XSS(urlencode($my_search)),
'name' => prepare4display($current_forum_category['cat_title'])
);
$interbreadcrumb[] = array(
'url' => '#',
'name' => Security::remove_XSS($current_forum['forum_title'])
);
}
if ($origin == 'learnpath') {
Display::display_reduced_header();
} else {
// The last element of the breadcrumb navigation is already set in interbreadcrumb, so give empty string.
Display::display_header('');
}
/* Actions */
// Change visibility of a forum or a forum category.
if (
($my_action == 'invisible' OR $my_action == 'visible') AND
isset($_GET['content']) AND
isset($_GET['id']) AND
api_is_allowed_to_edit(false, true) &&
api_is_allowed_to_session_edit(false, true)
) {
$message = change_visibility($_GET['content'], $_GET['id'], $_GET['action']);
}
// Locking and unlocking.
if (
($my_action == 'lock' OR $my_action == 'unlock') AND
isset($_GET['content']) AND isset($_GET['id']) AND
api_is_allowed_to_edit(false, true) &&
api_is_allowed_to_session_edit(false, true)
) {
$message = change_lock_status($_GET['content'], $_GET['id'], $my_action);
}
// Deleting.
if (
$my_action == 'delete' AND
isset($_GET['content']) AND
isset($_GET['id']) AND
api_is_allowed_to_edit(false, true) &&
api_is_allowed_to_session_edit(false, true)
) {
$locked = api_resource_is_locked_by_gradebook($_GET['id'], LINK_FORUM_THREAD);
if ($locked == false) {
$message = deleteForumCategoryThread($_GET['content'], $_GET['id']);
// Delete link
$link_info = GradebookUtils::is_resource_in_course_gradebook(
api_get_course_id(),
5,
intval($_GET['id']),
api_get_session_id()
);
$link_id = $link_info['id'];
if ($link_info !== false) {
GradebookUtils::remove_resource_from_course_gradebook($link_id);
}
}
}
// Moving.
if ($my_action == 'move' && isset($_GET['thread']) &&
api_is_allowed_to_edit(false, true ) &&
api_is_allowed_to_session_edit(false, true)
) {
$message = move_thread_form();
}
// Notification.
if (
$my_action == 'notify' &&
isset($_GET['content']) &&
isset($_GET['id']) &&
api_is_allowed_to_session_edit(false, true)
) {
$return_message = set_notification($_GET['content'], $_GET['id']);
Display::display_confirmation_message($return_message, false);
}
// Student list
if (
$my_action == 'liststd' &&
isset($_GET['content']) &&
isset($_GET['id']) &&
(api_is_allowed_to_edit(null, true) || $is_group_tutor)
) {
$active = null;
$listType = isset($_GET['list']) ? $_GET['list'] : null;
switch ($listType) {
case 'qualify':
$student_list = get_thread_users_qualify($_GET['id']);
$nrorow3 = -2;
$active = 2;
break;
case 'notqualify':
$student_list = get_thread_users_not_qualify($_GET['id']);
$nrorow3 = -2;
$active = 3;
break;
default:
$student_list = get_thread_users_details($_GET['id']);
$nrorow3 = Database::num_rows($student_list);
$active = 1;
break;
}
$table_list = Display::page_subheader(get_lang('ThreadUsersList') . ': ' . get_name_thread_by_id($_GET['id']));
if ($nrorow3 > 0 || $nrorow3 == -2) {
$url = 'cidReq=' . Security::remove_XSS($_GET['cidReq']) .
'&forum=' . Security::remove_XSS($my_forum) . '&action='
. Security::remove_XSS($_GET['action']) . '&content='
. Security::remove_XSS($_GET['content'], STUDENT) . '&id=' . intval($_GET['id']);
$tabs = array(
array(
'content' => get_lang('AllStudents'),
'url' => $forumUrl . 'viewforum.php?' . $url . '&origin=' . $origin . '&list=all'
),
array(
'content' => get_lang('StudentsQualified'),
'url' => $forumUrl . 'viewforum.php?' . $url . '&origin=' . $origin . '&list=qualify'
),
array(
'content' => get_lang('StudentsNotQualified'),
'url' => $forumUrl . 'viewforum.php?' . $url . '&origin=' . $origin . '&list=notqualify'
),
);
$table_list .= Display::tabsOnlyLink($tabs, $active);
$icon_qualify = 'blog_new.gif';
$table_list .= '<center><br /><table class="data_table" style="width:50%">';
// The column headers (TODO: Make this sortable).
$table_list .= '<tr >';
$table_list .= '<th height="24">' . get_lang('NamesAndLastNames') . '</th>';
if ($listType == 'qualify') {
$table_list .= '<th>' . get_lang('Qualification') . '</th>';
}
if (api_is_allowed_to_edit(null, true)) {
$table_list .= '<th>' . get_lang('Qualify') . '</th>';
}
$table_list .= '</tr>';
$max_qualify = showQualify('2', $userid, $_GET['id']);
$counter_stdlist = 0;
if (Database::num_rows($student_list) > 0) {
while ($row_student_list=Database::fetch_array($student_list)) {
$userInfo = api_get_user_info($row_student_list['id']);
if ($counter_stdlist % 2 == 0) {
$class_stdlist = 'row_odd';
} else {
$class_stdlist = 'row_even';
}
$table_list .= '<tr class="' . $class_stdlist . '"><td>';
$table_list .= UserManager::getUserProfileLink($userInfo);
$table_list .= '</td>';
if ($listType == 'qualify') {
$table_list .= '<td>' . $row_student_list['qualify'] . '/' . $max_qualify . '</td>';
}
if (api_is_allowed_to_edit(null, true)) {
$current_qualify_thread = showQualify(
'1',
$row_student_list['id'],
$_GET['id']
);
$table_list .= '<td>
<a href="' . $forumUrl . 'forumqualify.php?' . api_get_cidreq()
. '&forum=' . Security::remove_XSS($my_forum) . '&thread='
. Security::remove_XSS($_GET['id']) . '&user=' . $row_student_list['id']
. '&user_id=' . $row_student_list['id'] . '&idtextqualify='
. $current_qualify_thread . '&origin=' . $origin . '">'
. Display::return_icon($icon_qualify, get_lang('Qualify')) . '</a></td></tr>';
}
$counter_stdlist++;
}
} else {
if ($listType == 'qualify') {
$table_list .= '<tr><td colspan="2">' . get_lang('ThereIsNotQualifiedLearners') . '</td></tr>';
} else {
$table_list .= '<tr><td colspan="2">' . get_lang('ThereIsNotUnqualifiedLearners') . '</td></tr>';
}
}
$table_list .= '</table></center>';
$table_list .= '<br />';
} else {
$table_list .= Display::return_message(get_lang('NoParticipation'), 'warning');
}
}
if ($origin == 'learnpath') {
echo '<div style="height:15px">&nbsp;</div>';
}
/* Display the action messages */
if (!empty($message)) {
Display::display_confirmation_message($message);
}
/* Action links */
echo '<div class="actions">';
if ($origin != 'learnpath') {
if ($origin=='group') {
echo '<a href"=' . api_get_path(WEB_CODE_PATH) . 'group/group_space.php?'
. api_get_cidreq() . '&gradebook=' . $gradebook . '">'
. Display::return_icon('back.png', get_lang('BackTo')
. ' ' . get_lang('Groups'), '', ICON_SIZE_MEDIUM) . '</a>';
} else {
echo '<span style="float:right;">'.search_link().'</span>';
echo '<a href="' . $forumUrl . 'index.php?' . api_get_cidreq() . '">'
. Display::return_icon('back.png', get_lang('BackToForumOverview'), '', ICON_SIZE_MEDIUM)
. '</a>';
}
}
// The link should appear when
// 1. the course admin is here
// 2. the course member is here and new threads are allowed
// 3. a visitor is here and new threads AND allowed AND anonymous posts are allowed
if (
api_is_allowed_to_edit(false, true) OR
($current_forum['allow_new_threads'] == 1 AND isset($_user['user_id'])) OR
($current_forum['allow_new_threads'] == 1 AND !isset($_user['user_id']) AND $current_forum['allow_anonymous'] == 1)
) {
if ($current_forum['locked'] <> 1 AND $current_forum['locked'] <> 1) {
if (!api_is_anonymous() && !api_is_invitee()) {
if ($my_forum == strval(intval($my_forum))) {
echo '<a href="' . $forumUrl . 'newthread.php?' . api_get_cidreq() . '&forum='
. Security::remove_XSS($my_forum) . $origin_string . '">'
. Display::return_icon('new_thread.png', get_lang('NewTopic'), '', ICON_SIZE_MEDIUM)
. '</a>';
} else {
$my_forum = strval(intval($my_forum));
echo '<a href="' . $forumUrl . 'newthread.php?' . api_get_cidreq()
. '&forum=' . $my_forum . $origin_string . '">'
. Display::return_icon('new_thread.png', get_lang('NewTopic'), '', ICON_SIZE_MEDIUM)
. '</a>';
}
}
} else {
echo get_lang('ForumLocked');
}
}
echo '</div>';
/* Display */
$titleForum = $current_forum['forum_title'];
$descriptionForum = $current_forum['forum_comment'];
$iconForum = Display::return_icon(
'forum_yellow.png',
get_lang('Forum'),
null,
ICON_SIZE_MEDIUM
);
$html = '';
$html .= '<div class="topic-forum">';
// The current forum
if ($origin != 'learnpath') {
$html .= Display::tag(
'h3',
$iconForum .' '. $titleForum,
array(
'class' => 'title-forum')
);
if (!empty($descriptionForum)) {
$html .= Display::tag(
'p',
strip_tags($descriptionForum),
array(
'class' => 'description',
)
);
}
}
$html .= '</div>';
echo $html;
// Getting al the threads
$threads = get_threads($my_forum);
$whatsnew_post_info = isset($_SESSION['whatsnew_post_info']) ? $_SESSION['whatsnew_post_info'] : null;
$course_id = api_get_course_int_id();
echo '<div class="forum_display">';
if (is_array($threads)) {
$html = '';
$count = 1;
foreach ($threads as $row) {
// Thread who have no replies yet and the only post is invisible should not be displayed to students.
if (api_is_allowed_to_edit(false, true) ||
!($row['thread_replies'] == '0' AND $row['visibility'] == '0')
) {
$my_whatsnew_post_info = null;
if (isset($whatsnew_post_info[$my_forum][$row['thread_id']])) {
$my_whatsnew_post_info = $whatsnew_post_info[$my_forum][$row['thread_id']];
}
if (is_array($my_whatsnew_post_info) && !empty($my_whatsnew_post_info)) {
$newPost = ' ' . Display::return_icon('alert.png', get_lang('Forum'), null, ICON_SIZE_SMALL);
} else {
$newPost = '';
}
if ($row['thread_sticky'] == 1) {
//$sticky = Display::return_icon('exclamation.gif');
}
$name = api_get_person_name($row['firstname'], $row['lastname']);
$linkPostForum = '<a href="viewthread.php?' . api_get_cidreq() . '&forum=' . Security::remove_XSS($my_forum)
. "&origin=$origin&thread={$row['thread_id']}$origin_string&search="
. Security::remove_XSS(urlencode($my_search)) . '">'
. $row['thread_title'] . '</a>';
$html = '';
$html .= '<div class="panel panel-default forum '.($row['thread_sticky']?'sticky':'').'">';
$html .= '<div class="panel-body">';
$html .= '<div class="row">';
$html .= '<div class="col-md-6">';
$html .= '<div class="row">';
$html .= '<div class="col-md-2">';
// display the author name
$tab_poster_info = api_get_user_info($row['user_id']);
$poster_username = sprintf(get_lang('LoginX'), $tab_poster_info['username']);
$authorName = '';
if ($origin != 'learnpath') {
$authorName = display_user_link(
$row['user_id'],
api_get_person_name($row['firstname'],
$row['lastname']),
'',
$poster_username
);
} else {
$authorName = Display::tag(
'span',
api_get_person_name(
$row['firstname'],
$row['lastname']
),
array(
"title" => api_htmlentities($poster_username, ENT_QUOTES)
)
);
}
$html .= '<div class="thumbnail">' . display_user_image($row['user_id'], $name) . '</div>';
$html .= '</div>';
$html .= '<div class="col-md-10">';
$html .= Display::tag(
'h3',
$linkPostForum,
array(
'class' => 'title'
)
);
$html .= '<p>'. get_lang('By') .' ' .$authorName.'</p>';
$html .= '<p>' . api_convert_and_format_date($row['insert_date']) . '</p>';
$html .= '</div>';
$html .= '</div>';
$html .= '</div>';
$html .= '<div class="col-md-6">';
$html .= '<div class="row">';
$html .= '<div class="col-md-4">'
. Display::return_icon('post-forum.png', null, null, ICON_SIZE_SMALL)
. " {$row['thread_replies']} " . get_lang('Replies') . '<br>';
$html .= Display::return_icon(
'post-forum.png',
null,
null,
ICON_SIZE_SMALL
) . ' ' . $row['thread_views'] . ' ' . get_lang('Views') . '<br>' . $newPost;
$html .= '</div>';
$last_post_info = get_last_post_by_thread(
$row['c_id'],
$row['thread_id'],
$row['forum_id'],
api_is_allowed_to_edit()
);
$last_post = null;
if ($last_post_info) {
$poster_info = api_get_user_info($last_post_info['poster_id']);
$post_date = api_convert_and_format_date($last_post_info['post_date']);
$last_post = $post_date . '<br>' . get_lang('By') . ' ' . display_user_link(
$last_post_info['poster_id'],
$poster_info['complete_name'],
'',
$poster_info['username']
);
}
$html .= '<div class="col-md-5">'
. Display::return_icon('post-item.png', null, null, ICON_SIZE_TINY)
. ' ' . $last_post;
$html .= '</div>';
/*
if ($row['last_poster_user_id'] == '0') {
$name = $row['poster_name'];
$last_poster_username = "";
} else {
$name = api_get_person_name($row['last_poster_firstname'], $row['last_poster_lastname']);
$tab_last_poster_info = api_get_user_info($row['last_poster_user_id']);
$last_poster_username = sprintf(get_lang('LoginX'), $tab_last_poster_info['username']);
}
// If the last post is invisible and it is not the teacher who is looking then we have to find the last visible post of the thread.
if (($row['visible'] == '1' OR api_is_allowed_to_edit(false, true)) && $origin != 'learnpath') {
$last_post = $post_date.' '.get_lang('By').' '.display_user_link($row['last_poster_user_id'], $name, '', $last_poster_username);
} elseif ($origin != 'learnpath') {
$last_post_sql = "SELECT post.*, user.firstname, user.lastname, user.username FROM $table_posts post, $table_users user WHERE post.poster_id=user.user_id AND visible='1' AND thread_id='".$row['thread_id']."' AND post.c_id=".api_get_course_int_id()." ORDER BY post_id DESC";
$last_post_result = Database::query($last_post_sql);
$last_post_row = Database::fetch_array($last_post_result);
$name = api_get_person_name($last_post_row['firstname'], $last_post_row['lastname']);
$last_post_info_username = sprintf(get_lang('LoginX'), $last_post_row['username']);
$last_post = api_convert_and_format_date($last_post_row['post_date']).' '.get_lang('By').' '.display_user_link($last_post_row['poster_id'], $name, '', $last_post_info_username);
} else {
$last_post_sql = "SELECT post.*, user.firstname, user.lastname, user.username FROM $table_posts post, $table_users user WHERE post.poster_id=user.user_id AND visible='1' AND thread_id='".$row['thread_id']."' AND post.c_id=".api_get_course_int_id()." ORDER BY post_id DESC";
$last_post_result = Database::query($last_post_sql);
$last_post_row = Database::fetch_array($last_post_result);
$last_post_info_username = sprintf(get_lang('LoginX'), $last_post_row['username']);
$name = api_get_person_name($last_post_row['firstname'], $last_post_row['lastname']);
$last_post = api_convert_and_format_date($last_post_row['post_date']).' '.get_lang('By').' '.Display::tag('span', $name, array("title"=>api_htmlentities($last_post_info_username, ENT_QUOTES)));
}*/
$html .= '<div class="col-md-3">';
// Get attachment id.
if (isset($row['post_id'])) {
$attachment_list = get_attachment($row['post_id']);
}
$id_attach = !empty($attachment_list) ? $attachment_list['id'] : '';
$sql_post_id = "SELECT post_id
FROM $table_posts
WHERE
c_id = $course_id AND
post_title='" . Database::escape_string($row['thread_title']) . "'";
$result_post_id = Database::query($sql_post_id);
$row_post_id = Database::fetch_array($result_post_id);
$iconsEdit = '';
if ($origin != 'learnpath') {
if (api_is_allowed_to_edit(false, true) && !(api_is_course_coach() && $current_forum['session_id'] != $_SESSION['id_session'])) {
$iconsEdit .= '<a href="' . $forumUrl . 'editpost.php?' . api_get_cidreq()
. '&forum=' . Security::remove_XSS($my_forum) . '&thread='
. Security::remove_XSS($row['thread_id']) . '&post=' . $row_post_id['post_id']
. '&id_attach=' . $id_attach . '">'
. Display::return_icon('edit.png', get_lang('Edit'), array(), ICON_SIZE_SMALL) . '</a>';
if (api_resource_is_locked_by_gradebook($row['thread_id'], LINK_FORUM_THREAD)) {
$iconsEdit .= Display::return_icon(
'delete_na.png',
get_lang('ResourceLockedByGradebook'),
array(),
ICON_SIZE_SMALL
);
} else {
$iconsEdit.= '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&forum='
. Security::remove_XSS($my_forum) . '&action=delete&content=thread&id='
. $row['thread_id'] . $origin_string
. "\" onclick=\"javascript:if(!confirm('"
. addslashes(api_htmlentities(get_lang('DeleteCompleteThread'), ENT_QUOTES))
. "')) return false;\">"
. Display::return_icon('delete.png', get_lang('Delete'), array(), ICON_SIZE_SMALL) . '</a>';
}
$iconsEdit .= return_visible_invisible_icon(
'thread',
$row['thread_id'],
$row['visibility'],
array(
'forum' => $my_forum,
'origin' => $origin,
'gidReq' => $groupId
)
);
$iconsEdit .= return_lock_unlock_icon(
'thread',
$row['thread_id'],
$row['locked'],
array(
'forum' => $my_forum,
'origin' => $origin,
'gidReq' => api_get_group_id()
)
);
$iconsEdit .= '<a href="viewforum.php?' . api_get_cidreq() . '&forum='
. Security::remove_XSS($my_forum)
. '&action=move&thread=' . $row['thread_id'] . $origin_string . '">'
. Display::return_icon('move.png', get_lang('MoveThread'), array(), ICON_SIZE_SMALL)
. '</a>';
}
}
$iconnotify = 'notification_mail_na.png';
if (
is_array(
isset($_SESSION['forum_notification']['thread']) ? $_SESSION['forum_notification']['thread'] : null
)
) {
if (in_array($row['thread_id'], $_SESSION['forum_notification']['thread'])) {
$iconnotify = 'notification_mail.png';
}
}
$icon_liststd = 'user.png';
if (!api_is_anonymous() && api_is_allowed_to_session_edit(false, true)) {
$iconsEdit .= '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&forum='
. Security::remove_XSS($my_forum)
. "&origin=$origin&action=notify&content=thread&id={$row['thread_id']}"
. '">' . Display::return_icon($iconnotify, get_lang('NotifyMe')) . '</a>';
}
if (api_is_allowed_to_edit(null,true) && $origin != 'learnpath') {
$iconsEdit .= '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&forum='
. Security::remove_XSS($my_forum)
. "&origin=$origin&action=liststd&content=thread&id={$row['thread_id']}"
. '">' . Display::return_icon($icon_liststd, get_lang('StudentList'), array(), ICON_SIZE_SMALL)
. '</a>';
}
$html .= $iconsEdit;
$html .= '</div>';
$html .= '</div>';
$html .= '</div>';
$html .= '</div>';
$html .= '</div>';
$html .= '</div>';
echo $html;
}
$count++;
}
}
echo '</div>';
echo isset($table_list) ? $table_list : '';
/* FOOTER */
if ($origin != 'learnpath') {
Display::display_footer();
}