viewforum.php 20 KB

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  1. <?php
  2. /*
  3. ==============================================================================
  4. Dokeos - elearning and course management software
  5. Copyright (c) 2004-2008 Dokeos SPRL
  6. Copyright (c) 2003 Ghent University (UGent)
  7. Copyright (c) 2001 Universite catholique de Louvain (UCL)
  8. Copyright (c) various contributors
  9. For a full list of contributors, see "credits.txt".
  10. The full license can be read in "license.txt".
  11. This program is free software; you can redistribute it and/or
  12. modify it under the terms of the GNU General Public License
  13. as published by the Free Software Foundation; either version 2
  14. of the License, or (at your option) any later version.
  15. See the GNU General Public License for more details.
  16. Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
  17. Mail: info@dokeos.com
  18. ==============================================================================
  19. */
  20. /**
  21. * These files are a complete rework of the forum. The database structure is
  22. * based on phpBB but all the code is rewritten. A lot of new functionalities
  23. * are added:
  24. * - forum categories and forums can be sorted up or down, locked or made invisible
  25. * - consistent and integrated forum administration
  26. * - forum options: are students allowed to edit their post?
  27. * moderation of posts (approval)
  28. * reply only forums (students cannot create new threads)
  29. * multiple forums per group
  30. * - sticky messages
  31. * - new view option: nested view
  32. * - quoting a message
  33. *
  34. * @Author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  35. * @Copyright Ghent University
  36. * @Copyright Patrick Cool
  37. *
  38. * @package dokeos.forum
  39. */
  40. // name of the language file that needs to be included
  41. $language_file = array (
  42. 'forum',
  43. 'group'
  44. );
  45. // including the global dokeos file
  46. require '../inc/global.inc.php';
  47. // notice for unauthorized people.
  48. api_protect_course_script(true);
  49. // the section (tabs)
  50. $this_section=SECTION_COURSES;
  51. // including additional library scripts
  52. require_once (api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
  53. include_once (api_get_path(LIBRARY_PATH).'groupmanager.lib.php');
  54. $nameTools=get_lang('Forum');
  55. //are we in a lp ?
  56. $origin = '';
  57. $origin_string='';
  58. if (isset($_GET['origin'])) {
  59. $origin = Security::remove_XSS($_GET['origin']);
  60. $origin_string = '&origin='.$origin;
  61. }
  62. /*
  63. -----------------------------------------------------------
  64. Including necessary files
  65. -----------------------------------------------------------
  66. */
  67. require 'forumconfig.inc.php';
  68. require_once 'forumfunction.inc.php';
  69. $userid=api_get_user_id();
  70. $userinf=api_get_user_info($userid);
  71. /*
  72. ==============================================================================
  73. MAIN DISPLAY SECTION
  74. ==============================================================================
  75. */
  76. /*
  77. -----------------------------------------------------------
  78. Retrieving forum and forum categorie information
  79. -----------------------------------------------------------
  80. */
  81. // we are getting all the information about the current forum and forum category.
  82. // note pcool: I tried to use only one sql statement (and function) for this
  83. // but the problem is that the visibility of the forum AND forum cateogory are stored in the item_property table
  84. $my_forum_group=isset($_GET['gidReq'])?$_GET['gidReq']:'';
  85. $my_forum=isset($_GET['forum'])?$_GET['forum']:'';
  86. $val=GroupManager::user_has_access($userid,$my_forum_group,GROUP_TOOL_FORUM);
  87. if(!empty($my_forum_group)){
  88. if (api_is_allowed_to_edit(false,true) || $val==true) {
  89. $current_forum=get_forum_information($my_forum); // note: this has to be validated that it is an existing forum.
  90. $current_forum_category=get_forumcategory_information($current_forum['forum_category']);
  91. }
  92. } else {
  93. $result=get_forum_information($my_forum);
  94. if($result['forum_of_group']==0){
  95. $current_forum=get_forum_information($my_forum); // note: this has to be validated that it is an existing forum.
  96. $current_forum_category=get_forumcategory_information($current_forum['forum_category']);
  97. }
  98. }
  99. /*
  100. -----------------------------------------------------------
  101. Header and Breadcrumbs
  102. -----------------------------------------------------------
  103. */
  104. $my_search=isset($_GET['search'])?$_GET['search']:'';
  105. $my_action=isset($_GET['action'])?$_GET['action']:'';
  106. if (!empty($_GET['gidReq'])) {
  107. $toolgroup = Database::escape_string($_GET['gidReq']);
  108. api_session_register('toolgroup');
  109. }
  110. if (!empty($_SESSION['toolgroup'])) {
  111. $_clean['toolgroup']=(int)$_SESSION['toolgroup'];
  112. $group_properties = GroupManager :: get_group_properties($_clean['toolgroup']);
  113. $interbreadcrumb[] = array ("url" => "../group/group.php", "name" => get_lang('Groups'));
  114. $interbreadcrumb[] = array ("url"=>"../group/group_space.php?gidReq=".$_SESSION['toolgroup'], "name"=> get_lang('GroupSpace').' ('.$group_properties['name'].')');
  115. //$interbreadcrumb[]=array("url" => "index.php?search=".Security::remove_XSS($my_search),"name" => $nameTools);
  116. //$interbreadcrumb[]=array("url" => "viewforumcategory.php?forumcategory=".$current_forum_category['cat_id']."&amp;search=".Security::remove_XSS(urlencode($my_search)),"name" => prepare4display($current_forum_category['cat_title']));
  117. $interbreadcrumb[]=array("url" => "#","name" => prepare4display($current_forum['forum_title']));
  118. //viewforum.php?forum=".Security::remove_XSS($my_forum)."&amp;origin=".$origin."&amp;gidReq=".$_SESSION['toolgroup']."&amp;search=".Security::remove_XSS(urlencode($my_search)),
  119. } else {
  120. $interbreadcrumb[]=array("url" => "index.php?search=".Security::remove_XSS($my_search),"name" => $nameTools);
  121. $interbreadcrumb[]=array("url" => "viewforumcategory.php?forumcategory=".$current_forum_category['cat_id']."&amp;search=".Security::remove_XSS(urlencode($my_search)),"name" => prepare4display($current_forum_category['cat_title']));
  122. $interbreadcrumb[]=array("url" => "#","name" => prepare4display($current_forum['forum_title']));
  123. //viewforum.php?forum=".Security::remove_XSS($my_forum)."&amp;origin=".$origin."&amp;search=".Security::remove_XSS(urlencode($my_search))
  124. }
  125. if ($origin=='learnpath') {
  126. include(api_get_path(INCLUDE_PATH).'reduced_header.inc.php');
  127. } else {
  128. // the last element of the breadcrumb navigation is already set in interbreadcrumb, so give empty string
  129. Display :: display_header('');
  130. api_display_tool_title($nameTools);
  131. }
  132. /*
  133. -----------------------------------------------------------
  134. Actions
  135. -----------------------------------------------------------
  136. */
  137. $table_link = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
  138. // Change visibility of a forum or a forum category
  139. if (($my_action=='invisible' OR $my_action=='visible') AND isset($_GET['content']) AND isset($_GET['id']) AND api_is_allowed_to_edit(false,true)) {
  140. $message=change_visibility($_GET['content'], $_GET['id'],$_GET['action']);// note: this has to be cleaned first
  141. }
  142. // locking and unlocking
  143. if (($my_action=='lock' OR $my_action=='unlock') AND isset($_GET['content']) AND isset($_GET['id']) AND api_is_allowed_to_edit(false,true)) {
  144. $message=change_lock_status($_GET['content'], $_GET['id'],$my_action);// note: this has to be cleaned first
  145. }
  146. // deleting
  147. if ($my_action=='delete' AND isset($_GET['content']) AND isset($_GET['id']) AND api_is_allowed_to_edit(false,true)) {
  148. $message=delete_forum_forumcategory_thread($_GET['content'],$_GET['id']); // note: this has to be cleaned first
  149. //delete link
  150. $sql_link='DELETE FROM '.$table_link.' WHERE ref_id='.Security::remove_XSS($_GET['id']).' and type=5 and course_code="'.api_get_course_id().'";';
  151. api_sql_query($sql_link);
  152. }
  153. // moving
  154. if ($my_action=='move' and isset($_GET['thread']) AND api_is_allowed_to_edit(false,true)) {
  155. $message=move_thread_form();
  156. }
  157. // notification
  158. if ($my_action == 'notify' AND isset($_GET['content']) AND isset($_GET['id'])) {
  159. $return_message = set_notification($_GET['content'],$_GET['id']);
  160. Display :: display_confirmation_message($return_message,false);
  161. }
  162. // student list
  163. if ($my_action == 'liststd' AND isset($_GET['content']) AND isset($_GET['id']) AND $userinf['status']=='1') {
  164. switch($_GET['list']) {
  165. case "qualify":
  166. $student_list=get_thread_users_qualify($_GET['id']);
  167. $nrorow3 =-2;
  168. break;
  169. case "notqualify":
  170. $student_list=get_thread_users_not_qualify($_GET['id']);
  171. $nrorow3 =-2;
  172. break;
  173. default:
  174. $student_list=get_thread_users_details($_GET['id']);
  175. $nrorow3 = Database::num_rows($student_list);
  176. break;
  177. }
  178. $table_list = '<p><br /><h3>'.get_lang('ThreadUsersList').'&nbsp;:'.get_name_thread_by_id($_GET['id']).'</h3>';
  179. if ($nrorow3>0 || $nrorow3==-2) {
  180. $url = 'cidReq='.Security::remove_XSS($_GET['cidReq']).'&forum='.Security::remove_XSS($my_forum).'&action='.Security::remove_XSS($_GET['action']).'&content='.Security::remove_XSS($_GET['content']).'&id='.Security::remove_XSS($_GET['id']);
  181. $table_list.= '<br />
  182. <div style="width:50%">
  183. <table class="data_table" border="0">
  184. <tr>
  185. <th height="22"><a href="viewforum.php?'.$url.'&origin='.$origin.'&list=all">'.get_lang('AllStudents').'</a></th>
  186. <th><a href="viewforum.php?'.$url.'&origin='.$origin.'&list=qualify">'.get_lang('StudentsQualified').'</a></th>
  187. <th><a href="viewforum.php?'.$url.'&origin='.$origin.'&list=notqualify">'.get_lang('StudentsNotQualified').'</a></th>
  188. </tr>
  189. </table></div>
  190. <div style="border:1px solid gray; width:99%; margin-top:5px; padding:4px; float:left">
  191. ';
  192. $icon_qualify = 'blog_new.gif';
  193. $table_list.= '<center><br /><table class="data_table" style="width:50%">';
  194. // The column headers (to do: make this sortable)
  195. $table_list.= '<tr >';
  196. $table_list.= '<th height="24">'.get_lang('NamesAndLastNames').'</th>';
  197. if ($_GET['list']=='qualify') {
  198. $table_list.= '<th>'.get_lang('Qualify').'</th>';
  199. }
  200. if ($userinf['status']=='1') {
  201. $table_list.= '<th>'.get_lang('Qualify').'</th>';
  202. }
  203. $table_list.= '</tr>';
  204. $max_qualify=show_qualify('2',$_GET['cidReq'],$my_forum,$userid,$_GET['id']);
  205. $counter_stdlist=0;
  206. while ($row_student_list=Database::fetch_array($student_list)) {
  207. if ($counter_stdlist%2==0) {
  208. $class_stdlist="row_odd";
  209. } else {
  210. $class_stdlist="row_even";
  211. }
  212. $name_user_theme = $row_student_list['firstname'].' '.$row_student_list['lastname'];
  213. $table_list.= '<tr class="$class_stdlist"><td><a href="../user/userInfo.php?uInfo='.$row_student_list['user_id'].'&tipo=sdtlist&'.api_get_cidreq().'&forum='.Security::remove_XSS($my_forum).$origin_string.'">'.$name_user_theme.'</a></td>';
  214. if ($_GET['list']=='qualify') {
  215. $table_list.= '<td>'.$row_student_list['qualify'].'/'.$max_qualify.'</td>';
  216. }
  217. if ($userinf['status']=='1') {
  218. $current_qualify_thread=show_qualify('1',$_GET['cidReq'],$my_forum,$row_student_list['user_id'],$_GET['id']);
  219. $table_list.= '<td><a href="forumqualify.php?'.api_get_cidreq().'&forum='.Security::remove_XSS($my_forum).'&thread='.Security::remove_XSS($_GET['id']).'&user='.$row_student_list['user_id'].'&user_id='.$row_student_list['user_id'].'&idtextqualify='.$current_qualify_thread.'&origin='.$origin.'">'.icon('../img/'.$icon_qualify,get_lang('Qualify')).'</a></td></tr>';
  220. }
  221. $counter_stdlist++;
  222. }
  223. $table_list.= '</table></center>';
  224. $table_list .= '<br /></div>';
  225. } else {
  226. $table_list .= get_lang('NoParticipation');
  227. }
  228. }
  229. /*
  230. -----------------------------------------------------------
  231. Is the user allowed here?
  232. -----------------------------------------------------------
  233. */
  234. // if the user is not a course administrator and the forum is hidden
  235. // then the user is not allowed here.
  236. if (!api_is_allowed_to_edit(false,true) AND ($current_forum_category['visibility']==0 OR $current_forum['visibility']==0)) {
  237. forum_not_allowed_here();
  238. }
  239. /*
  240. -----------------------------------------------------------
  241. Display the action messages
  242. -----------------------------------------------------------
  243. */
  244. if (!empty($message)) {
  245. Display :: display_confirmation_message($message);
  246. }
  247. /*
  248. -----------------------------------------------------------
  249. Action Links
  250. -----------------------------------------------------------
  251. */
  252. echo '<div class="actions">';
  253. if (empty($_SESSION['toolgroup'])){
  254. echo '<span style="float:right;">'.search_link().'</span>';
  255. }
  256. // The link should appear when
  257. // 1. the course admin is here
  258. // 2. the course member is here and new threads are allowed
  259. // 3. a visitor is here and new threads AND allowed AND anonymous posts are allowed
  260. 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 $current_forum['allow_anonymous']==1)) {
  261. if ($current_forum['locked'] <> 1 AND $current_forum['locked'] <> 1) {
  262. echo '<a href="newthread.php?'.api_get_cidreq().'&forum='.Security::remove_XSS($my_forum).$origin_string.'">'.Display::return_icon('forumthread_new.gif',get_lang('NewTopic')).' '.get_lang('NewTopic').'</a>';
  263. } else {
  264. echo get_lang('ForumLocked');
  265. }
  266. }
  267. echo '</div>';
  268. /*
  269. -----------------------------------------------------------
  270. Display
  271. -----------------------------------------------------------
  272. */
  273. echo "<table class=\"data_table\" >\n";
  274. // the current forum
  275. if ($origin != 'learnpath') {
  276. echo "\t<tr>\n\t\t<th align=\"left\" colspan=\"7\">";
  277. echo '<span class="forum_title">'.prepare4display($current_forum['forum_title']).'</span>';
  278. if (!empty ($current_forum['forum_comment'])) {
  279. echo '<br><span class="forum_description">'.prepare4display($current_forum['forum_comment']).'</span>';
  280. }
  281. if (!empty ($current_forum_category['cat_title'])) {
  282. echo '<br /><span class="forum_low_description">'.prepare4display($current_forum_category['cat_title'])."</span><br />";
  283. }
  284. echo "</th>\n";
  285. echo "\t</tr>\n";
  286. }
  287. echo "</th>\n";
  288. echo "\t</tr>\n";
  289. // The column headers (to do: make this sortable)
  290. echo "\t<tr class=\"forum_threadheader\">\n";
  291. echo "\t\t<td></td>\n";
  292. echo "\t\t<td>".get_lang('Title')."</td>\n";
  293. echo "\t\t<td>".get_lang('Replies')."</td>\n";
  294. echo "\t\t<td>".get_lang('Views')."</td>\n";
  295. echo "\t\t<td>".get_lang('Author')."</td>\n";
  296. echo "\t\t<td>".get_lang('LastPost')."</td>\n";
  297. echo "\t\t<td>".get_lang('Actions')."</td>\n";
  298. echo "\t</tr>\n";
  299. // getting al the threads
  300. $threads=get_threads($my_forum); // note: this has to be cleaned first
  301. $whatsnew_post_info=isset($_SESSION['whatsnew_post_info'])?$_SESSION['whatsnew_post_info']:null;
  302. $counter=0;
  303. if(is_array($threads)) {
  304. foreach ($threads as $row) {
  305. // thread who have no replies yet and the only post is invisible should not be displayed to students.
  306. if (api_is_allowed_to_edit(false,true) OR !($row['thread_replies']=='0' AND $row['visible']=='0')) {
  307. if($counter%2==0) {
  308. $class="row_odd";
  309. } else {
  310. $class="row_even";
  311. }
  312. echo "\t<tr class=\"$class\">\n";
  313. echo "\t\t<td>";
  314. $my_whatsnew_post_info=isset($whatsnew_post_info[$my_forum][$row['thread_id']])?$whatsnew_post_info[$my_forum][$row['thread_id']]:null;
  315. if (is_array($my_whatsnew_post_info) and !empty($my_whatsnew_post_info)) {
  316. echo icon('../img/forumthread.gif');
  317. } else {
  318. echo icon('../img/forumthread.gif');
  319. }
  320. if ($row['thread_sticky']==1) {
  321. echo icon('../img/exclamation.gif');
  322. }
  323. echo "</td>\n";
  324. echo "\t\t<td>";
  325. echo "<a href=\"viewthread.php?".api_get_cidreq()."&forum=".Security::remove_XSS($my_forum)."&amp;origin=".$origin."&amp;thread=".$row['thread_id'].$origin_string."&amp;search=".Security::remove_XSS(urlencode($my_search))."\" ".class_visible_invisible($row['visibility']).">".prepare4display($row['thread_title'])."</a></td>\n";
  326. echo "\t\t<td>".$row['thread_replies']."</td>\n";
  327. if ($row['user_id']=='0') {
  328. $name=prepare4display($row['thread_poster_name']);
  329. } else {
  330. $name=$row['firstname'].' '.$row['lastname'];
  331. }
  332. echo "\t\t<td>".$row['thread_views']."</td>\n";
  333. if ($row['last_poster_user_id']=='0') {
  334. $name=$row['poster_name'];
  335. } else {
  336. $name=$row['last_poster_firstname'].' '.$row['last_poster_lastname'];
  337. }
  338. if($origin != 'learnpath') {
  339. echo "\t\t<td>".display_user_link($row['user_id'], $row['firstname'].' '.$row['lastname'])."</td>\n";
  340. } else {
  341. echo "\t\t<td>".$row['firstname'].' '.$row['lastname']."</td>\n";
  342. }
  343. // 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
  344. if (($row['visible']=='1' OR api_is_allowed_to_edit(false,true)) && $origin!='learnpath') {
  345. $last_post=$row['thread_date']." ".get_lang('By').' '.display_user_link($row['last_poster_user_id'], $name);
  346. } elseif ($origin!='learnpath') {
  347. $last_post_sql="SELECT post.*, user.firstname, user.lastname FROM $table_posts post, $table_users user WHERE post.poster_id=user.user_id AND visible='1' AND thread_id='".$row['thread_id']."' ORDER BY post_id DESC";
  348. $last_post_result=api_sql_query($last_post_sql, __FILE__, __LINE__);
  349. $last_post_row=mysql_fetch_array($last_post_result);
  350. $name=$last_post_row['firstname'].' '.$last_post_row['lastname'];
  351. $last_post=$last_post_row['post_date']." ".get_lang('By').' '.display_user_link($last_post_row['poster_id'], $name);
  352. } else {
  353. $last_post_sql="SELECT post.*, user.firstname, user.lastname FROM $table_posts post, $table_users user WHERE post.poster_id=user.user_id AND visible='1' AND thread_id='".$row['thread_id']."' ORDER BY post_id DESC";
  354. $last_post_result=api_sql_query($last_post_sql, __FILE__, __LINE__);
  355. $last_post_row=mysql_fetch_array($last_post_result);
  356. $name=$last_post_row['firstname'].' '.$last_post_row['lastname'];
  357. $last_post=$last_post_row['post_date']." ".get_lang('By').' '.$name;
  358. }
  359. echo "\t\t<td>".$last_post."</td>\n";
  360. echo "\t\t<td>";
  361. if (api_is_allowed_to_edit(false,true) && !(api_is_course_coach() && $current_forum['session_id']!=$_SESSION['id_session'])) {
  362. echo "<a href=\"editpost.php?".api_get_cidreq()."&forum=".Security::remove_XSS($my_forum)."&amp;thread=".Security::remove_XSS($row['thread_id'])."&amp;post=".$row['post_id']."&amp;gidReq=".$_SESSION['toolgroup']."&origin=".$origin."\">".icon('../img/edit.gif',get_lang('Edit'))."</a>\n";
  363. echo "<a href=\"".api_get_self()."?".api_get_cidreq()."&forum=".Security::remove_XSS($my_forum)."&amp;action=delete&amp;content=thread&amp;gidReq=".$_SESSION['toolgroup']."&amp;id=".$row['thread_id'].$origin_string."\" onclick=\"javascript:if(!confirm('".addslashes(htmlentities(get_lang("DeleteCompleteThread"),ENT_QUOTES,$charset))."')) return false;\">".icon('../img/delete.gif',get_lang('Delete'))."</a>";
  364. display_visible_invisible_icon('thread', $row['thread_id'], $row['visibility'], array("forum"=>$my_forum,'origin'=>$origin,"gidReq"=>$_SESSION['toolgroup']));
  365. display_lock_unlock_icon('thread',$row['thread_id'], $row['locked'], array("forum"=>$my_forum,'origin'=>$origin,"gidReq"=>$_SESSION['toolgroup']));
  366. echo "<a href=\"viewforum.php?".api_get_cidreq()."&forum=".Security::remove_XSS($my_forum)."&amp;action=move&amp;gidReq=".$_SESSION['toolgroup']."&amp;thread=".$row['thread_id'].$origin_string."\">".icon('../img/deplacer_fichier.gif',get_lang('MoveThread'))."</a>";
  367. }
  368. $iconnotify = 'send_mail.gif';
  369. if (is_array(isset($_SESSION['forum_notification']['thread'])?$_SESSION['forum_notification']['thread']:null)) {
  370. if (in_array($row['thread_id'],$_SESSION['forum_notification']['thread'])) {
  371. $iconnotify = 'send_mail_checked.gif';
  372. }
  373. }
  374. $icon_liststd = 'group.gif';
  375. echo "<a href=\"".api_get_self()."?".api_get_cidreq()."&amp;forum=".Security::remove_XSS($my_forum)."&origin=".$origin."&amp;action=notify&amp;content=thread&amp;gidReq=".$_SESSION['toolgroup']."&amp;id=".$row['thread_id']."\">".icon('../img/'.$iconnotify,get_lang('NotifyMe'))."</a>";
  376. if ($userinf['status']=='1') {
  377. echo '<a href="'.api_get_self().'?'.api_get_cidreq().'&amp;forum='.Security::remove_XSS($my_forum).'&origin='.$origin.'&amp;action=liststd&amp;content=thread&amp;gidReq='.$_SESSION['toolgroup'].'&amp;id='.$row['thread_id'].'">'.icon('../img/'.$icon_liststd,get_lang('StudentList')).'</a>';
  378. }
  379. echo "</td>\n";
  380. echo "\t</tr>\n";
  381. }
  382. $counter++;
  383. }
  384. }
  385. echo "</table>";
  386. echo isset($table_list)?$table_list:'';
  387. /*
  388. ==============================================================================
  389. FOOTER
  390. ==============================================================================
  391. */
  392. if ($origin != 'learnpath') {
  393. Display :: display_footer();
  394. }