sessionmanager.lib.php 75 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * This is the session library for Chamilo.
  5. * All main sessions functions should be placed here.
  6. * This class provides methods for sessions management.
  7. * Include/require it in your code to use its features.
  8. * @package chamilo.library
  9. */
  10. /**
  11. * Code
  12. */
  13. class SessionManager {
  14. private function __construct() {
  15. }
  16. /**
  17. * Fetches a session from the database
  18. * @param int Session ID
  19. * @return array Session details (id, id_coach, name, nbr_courses, nbr_users, nbr_classes, date_start, date_end, nb_days_access_before_beginning,nb_days_access_after_end, session_admin_id)
  20. */
  21. public static function fetch($id) {
  22. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  23. if ($id != strval(intval($id))) { return array(); }
  24. $s = "SELECT * FROM $t WHERE id = $id";
  25. $r = Database::query($s);
  26. if (Database::num_rows($r) != 1) { return array(); }
  27. return Database::fetch_array($r,'ASSOC');
  28. }
  29. /**
  30. * Create a session
  31. * @author Carlos Vargas from existing code
  32. * @param string name
  33. * @param integer Start year (yyyy)
  34. * @param integer Start month (mm)
  35. * @param integer Start day (dd)
  36. * @param integer End year (yyyy)
  37. * @param integer End month (mm)
  38. * @param integer End day (dd)
  39. * @param integer Number of days that the coach can access the session before the start date
  40. * @param integer Number of days that the coach can access the session after the end date
  41. * @param integer If 1, means there are no date limits
  42. * @param mixed If integer, this is the session coach id, if string, the coach ID will be looked for from the user table
  43. * @param integer ID of the session category in which this session is registered
  44. * @param integer Visibility after end date (0 = read-only, 1 = invisible, 2 = accessible)
  45. * @param string Start limit = true if the start date has to be considered
  46. * @param string End limit = true if the end date has to be considered
  47. * @todo use an array to replace all this parameters or use the model.lib.php ...
  48. * @return mixed Session ID on success, error message otherwise
  49. **/
  50. public static function create_session($sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end,$sday_end,$snb_days_acess_before,$snb_days_acess_after, $nolimit,$coach_username, $id_session_category,$id_visibility, $start_limit = true, $end_limit = true, $fix_name = false) {
  51. global $_configuration;
  52. //Check portal limits
  53. $access_url_id = 1;
  54. if (api_get_multiple_access_url()) {
  55. $access_url_id = api_get_current_access_url_id();
  56. }
  57. if (is_array($_configuration[$access_url_id]) && isset($_configuration[$access_url_id]['hosting_limit_sessions']) && $_configuration[$access_url_id]['hosting_limit_sessions'] > 0) {
  58. $num = self::count_sessions();
  59. if ($num >= $_configuration[$access_url_id]['hosting_limit_sessions']) {
  60. return get_lang('PortalSessionsLimitReached');
  61. }
  62. }
  63. $name = Database::escape_string(trim($sname));
  64. $year_start = intval($syear_start);
  65. $month_start = intval($smonth_start);
  66. $day_start = intval($sday_start);
  67. $year_end = intval($syear_end);
  68. $month_end = intval($smonth_end);
  69. $day_end = intval($sday_end);
  70. $nb_days_acess_before = intval($snb_days_acess_before);
  71. $nb_days_acess_after = intval($snb_days_acess_after);
  72. $id_session_category = intval($id_session_category);
  73. $id_visibility = intval($id_visibility);
  74. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  75. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  76. if (is_int($coach_username)) {
  77. $id_coach = $coach_username;
  78. } else {
  79. $sql = 'SELECT user_id FROM '.$tbl_user.' WHERE username="'.Database::escape_string($coach_username).'"';
  80. $rs = Database::query($sql);
  81. $id_coach = Database::result($rs,0,'user_id');
  82. }
  83. if (empty($nolimit)) {
  84. $date_start ="$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  85. $date_end ="$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  86. } else {
  87. $id_visibility = 1; // by default session visibility is read only
  88. $date_start ="0000-00-00";
  89. $date_end ="0000-00-00";
  90. }
  91. if (empty($end_limit)) {
  92. $date_end ="0000-00-00";
  93. $id_visibility = 1; // by default session visibility is read only
  94. }
  95. if (empty($start_limit)) {
  96. $date_start ="0000-00-00";
  97. }
  98. if (empty($name)) {
  99. $msg=get_lang('SessionNameIsRequired');
  100. return $msg;
  101. } elseif (empty($coach_username)) {
  102. $msg=get_lang('CoachIsRequired');
  103. return $msg;
  104. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  105. $msg=get_lang('InvalidStartDate');
  106. return $msg;
  107. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  108. $msg=get_lang('InvalidEndDate');
  109. return $msg;
  110. } elseif(!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  111. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  112. return $msg;
  113. } else {
  114. $ready_to_create = false;
  115. if ($fix_name) {
  116. $name = self::generate_nice_next_session_name($name);
  117. if ($name) {
  118. $ready_to_create = true;
  119. } else {
  120. $msg=get_lang('SessionNameAlreadyExists');
  121. return $msg;
  122. }
  123. } else {
  124. $rs = Database::query("SELECT 1 FROM $tbl_session WHERE name='".$name."'");
  125. if (Database::num_rows($rs)) {
  126. $msg=get_lang('SessionNameAlreadyExists');
  127. return $msg;
  128. }
  129. $ready_to_create = true;
  130. }
  131. if ($ready_to_create) {
  132. $sql_insert = "INSERT INTO $tbl_session(name,date_start,date_end,id_coach,session_admin_id, nb_days_access_before_beginning, nb_days_access_after_end, session_category_id,visibility)
  133. VALUES('".$name."','$date_start','$date_end','$id_coach',".api_get_user_id().",".$nb_days_acess_before.", ".$nb_days_acess_after.", ".$id_session_category.", ".$id_visibility.")";
  134. Database::query($sql_insert);
  135. $session_id = Database::insert_id();
  136. if (!empty($session_id)) {
  137. /*
  138. Sends a message to the user_id = 1
  139. $user_info = api_get_user_info(1);
  140. $complete_name = $user_info['firstname'].' '.$user_info['lastname'];
  141. $subject = api_get_setting('siteName').' - '.get_lang('ANewSessionWasCreated');
  142. $message = get_lang('ANewSessionWasCreated')." <br /> ".get_lang('NameOfTheSession').' : '.$name;
  143. api_mail_html($complete_name, $user_info['email'], $subject, $message);
  144. *
  145. */
  146. //Adding to the correct URL
  147. $access_url_id = api_get_current_access_url_id();
  148. UrlManager::add_session_to_url($session_id,$access_url_id);
  149. // add event to system log
  150. $user_id = api_get_user_id();
  151. event_system(LOG_SESSION_CREATE, LOG_SESSION_ID, $session_id, api_get_utc_datetime(), $user_id);
  152. }
  153. return $session_id;
  154. }
  155. }
  156. }
  157. function session_name_exists($session_name) {
  158. $session_name = Database::escape_string($session_name);
  159. $result = Database::fetch_array(Database::query("SELECT COUNT(*) as count FROM ".Database::get_main_table(TABLE_MAIN_SESSION)." WHERE name = '$session_name' "));
  160. return $result['count'] > 0;
  161. }
  162. static function get_count_admin() {
  163. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  164. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  165. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  166. $where = 'WHERE 1=1 ';
  167. $user_id = api_get_user_id();
  168. if (api_is_session_admin() && api_get_setting('allow_session_admins_to_see_all_sessions') == 'false') {
  169. $where.=" WHERE s.session_admin_id = $user_id ";
  170. }
  171. $query_rows = "SELECT count(*) as total_rows
  172. FROM $tbl_session s
  173. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  174. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  175. $where ";
  176. global $_configuration;
  177. if ($_configuration['multiple_access_urls']) {
  178. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  179. $access_url_id = api_get_current_access_url_id();
  180. if ($access_url_id != -1) {
  181. $where.= " AND ar.access_url_id = $access_url_id ";
  182. $query_rows = "SELECT count(*) as total_rows
  183. FROM $tbl_session s
  184. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  185. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  186. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  187. $where ";
  188. }
  189. }
  190. $result_rows = Database::query($query_rows);
  191. $recorset = Database::fetch_array($result_rows);
  192. $num = $recorset['total_rows'];
  193. return $num;
  194. }
  195. /**
  196. * Gets the admin session list callback of the admin/session_list.php page
  197. * @param array order and limit keys
  198. */
  199. public static function get_sessions_admin($options) {
  200. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  201. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  202. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  203. $where = 'WHERE 1=1 ';
  204. $user_id = api_get_user_id();
  205. if (api_is_session_admin() && api_get_setting('allow_session_admins_to_manage_all_sessions') == 'false') {
  206. $where.=" AND s.session_admin_id = $user_id ";
  207. }
  208. $coach_name = " CONCAT (u.lastname , ' ', u.firstname) as coach_name ";
  209. if (api_is_western_name_order()) {
  210. $coach_name = " CONCAT (u.firstname, ' ', u.lastname) as coach_name ";
  211. }
  212. $today = api_get_utc_datetime();
  213. $today = api_strtotime($today, 'UTC');
  214. $today = date('Y-m-d', $today);
  215. $select = "SELECT * FROM (SELECT
  216. IF (
  217. (s.date_start <= '$today' AND '$today' < s.date_end) OR
  218. (s.date_start = '0000-00-00' AND s.date_end = '0000-00-00' ) OR
  219. (s.date_start <= '$today' AND '0000-00-00' = s.date_end) OR
  220. ('$today' < s.date_end AND '0000-00-00' = s.date_start)
  221. , 1, 0)
  222. as session_active,
  223. s.name, nbr_courses, nbr_users, s.date_start, s.date_end, $coach_name, sc.name as category_name, s.visibility, u.user_id, s.id";
  224. $query = "$select FROM $tbl_session s
  225. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  226. INNER JOIN $tbl_user u ON s.id_coach = u.user_id ".
  227. $where;
  228. global $_configuration;
  229. if ($_configuration['multiple_access_urls']) {
  230. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  231. $access_url_id = api_get_current_access_url_id();
  232. if ($access_url_id != -1) {
  233. $where.= " AND ar.access_url_id = $access_url_id ";
  234. $query = "$select
  235. FROM $tbl_session s
  236. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  237. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  238. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  239. $where";
  240. }
  241. }
  242. $query .= ") AS session_table";
  243. if (!empty($options['where'])) {
  244. $query .= ' WHERE '.$options['where'];
  245. }
  246. $query .= " ORDER BY ".$options['order']." LIMIT ".$options['limit'];
  247. $result = Database::query($query);
  248. $formatted_sessions = array();
  249. if (Database::num_rows($result)) {
  250. $sessions = Database::store_result($result);
  251. foreach ($sessions as $session) {
  252. $session['name'] = Display::url($session['name'], "resume_session.php?id_session=".$session['id']);
  253. $session['coach_name'] = Display::url($session['coach_name'], "user_information.php?user_id=".$session['user_id']);
  254. if ($session['date_start'] == '0000-00-00' && $session['date_end'] == '0000-00-00') {
  255. // $session['session_active'] = 1;
  256. }
  257. if ($session['session_active'] == 1) {
  258. $session['session_active'] = Display::return_icon('accept.png', get_lang('Active'), array(), ICON_SIZE_SMALL);
  259. } else {
  260. $session['session_active'] = Display::return_icon('error.png', get_lang('Inactive'), array(), ICON_SIZE_SMALL);
  261. }
  262. if ($session['date_start'] == '0000-00-00') {
  263. $session['date_start'] = '';
  264. }
  265. if ($session['date_end'] == '0000-00-00') {
  266. $session['date_end'] = '';
  267. }
  268. switch ($session['visibility']) {
  269. case SESSION_VISIBLE_READ_ONLY: //1
  270. $session['visibility'] = get_lang('ReadOnly');
  271. break;
  272. case SESSION_VISIBLE: //2
  273. $session['visibility'] = get_lang('Visible');
  274. break;
  275. case SESSION_INVISIBLE: //3
  276. $session['visibility'] = api_ucfirst(get_lang('Invisible'));
  277. break;
  278. }
  279. $formatted_sessions[] = $session;
  280. }
  281. }
  282. return $formatted_sessions;
  283. }
  284. /**
  285. * Creates a new course code based in given code
  286. *
  287. * @param string wanted code
  288. * <code>
  289. * $wanted_code = 'curse' if there are in the DB codes like curse1 curse2 the function will return: course3
  290. * if the course code doest not exist in the DB the same course code will be returned
  291. * </code>
  292. * @return string wanted unused code
  293. */
  294. function generate_nice_next_session_name($session_name) {
  295. $session_name_ok = !self::session_name_exists($session_name);
  296. if (!$session_name_ok) {
  297. $table = Database::get_main_table(TABLE_MAIN_SESSION);
  298. $session_name = Database::escape_string($session_name);
  299. $sql = "SELECT count(*) as count FROM $table WHERE name LIKE '$session_name%'";
  300. $result = Database::query($sql);
  301. if (Database::num_rows($result) > 0 ) {
  302. $row = Database::fetch_array($result);
  303. $count = $row['count'] + 1;
  304. $session_name = $session_name.'_'.$count;
  305. $result = self::session_name_exists($session_name);
  306. if (!$result) {
  307. return $session_name;
  308. }
  309. }
  310. return false;
  311. }
  312. return $session_name;
  313. }
  314. /**
  315. * Edit a session
  316. * @author Carlos Vargas from existing code
  317. * @param integer id
  318. * @param string name
  319. * @param integer year_start
  320. * @param integer month_start
  321. * @param integer day_start
  322. * @param integer year_end
  323. * @param integer month_end
  324. * @param integer day_end
  325. * @param integer nb_days_acess_before
  326. * @param integer nb_days_acess_after
  327. * @param integer nolimit
  328. * @param integer id_coach
  329. * @param integer id_session_category
  330. * @return $id;
  331. * The parameter id is a primary key
  332. **/
  333. public static function edit_session ($id,$name,$year_start,$month_start,$day_start,$year_end,$month_end,$day_end,$nb_days_acess_before,$nb_days_acess_after,$nolimit,$id_coach, $id_session_category, $id_visibility, $start_limit = true, $end_limit = true) {
  334. global $_user;
  335. $name=trim(stripslashes($name));
  336. $year_start=intval($year_start);
  337. $month_start=intval($month_start);
  338. $day_start=intval($day_start);
  339. $year_end=intval($year_end);
  340. $month_end=intval($month_end);
  341. $day_end=intval($day_end);
  342. $id_coach= intval($id_coach);
  343. $nb_days_acess_before= intval($nb_days_acess_before);
  344. $nb_days_acess_after = intval($nb_days_acess_after);
  345. $id_session_category = intval($id_session_category);
  346. $id_visibility = intval($id_visibility);
  347. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  348. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  349. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  350. if (empty($nolimit)) {
  351. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  352. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  353. } else {
  354. $date_start = "0000-00-00";
  355. $date_end = "0000-00-00";
  356. $id_visibility = 1;//force read only
  357. }
  358. if (!empty($no_end_limit)) {
  359. $date_end = "0000-00-00";
  360. }
  361. if (empty($end_limit)) {
  362. $date_end ="0000-00-00";
  363. $id_visibility = 1;//force read only
  364. }
  365. if (empty($start_limit)) {
  366. $date_start ="0000-00-00";
  367. }
  368. if (empty($name)) {
  369. $msg=get_lang('SessionNameIsRequired');
  370. return $msg;
  371. } elseif (empty($id_coach)) {
  372. $msg=get_lang('CoachIsRequired');
  373. return $msg;
  374. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  375. $msg=get_lang('InvalidStartDate');
  376. return $msg;
  377. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  378. $msg=get_lang('InvalidEndDate');
  379. return $msg;
  380. } elseif (!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  381. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  382. return $msg;
  383. } else {
  384. $rs = Database::query("SELECT id FROM $tbl_session WHERE name='".Database::escape_string($name)."'");
  385. $exists = false;
  386. while ($row = Database::fetch_array($rs)) {
  387. if($row['id']!=$id)
  388. $exists = true;
  389. }
  390. if ($exists) {
  391. $msg=get_lang('SessionNameAlreadyExists');
  392. return $msg;
  393. } else {
  394. $sql="UPDATE $tbl_session " .
  395. "SET name='".Database::escape_string($name)."',
  396. date_start='".$date_start."',
  397. date_end='".$date_end."',
  398. id_coach='".$id_coach."',
  399. nb_days_access_before_beginning = ".$nb_days_acess_before.",
  400. nb_days_access_after_end = ".$nb_days_acess_after.",
  401. session_category_id = ".$id_session_category." ,
  402. visibility= ".$id_visibility."
  403. WHERE id='$id'";
  404. Database::query($sql);
  405. return $id;
  406. }
  407. }
  408. }
  409. /**
  410. * Delete session
  411. * @author Carlos Vargas from existing code
  412. * @param array id_checked
  413. * @param boolean optional, true if the function is called by a webservice, false otherwise.
  414. * @return void Nothing, or false on error
  415. * The parameters is a array to delete sessions
  416. **/
  417. public static function delete_session ($id_checked,$from_ws = false) {
  418. $tbl_session= Database::get_main_table(TABLE_MAIN_SESSION);
  419. $tbl_session_rel_course= Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  420. $tbl_session_rel_course_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  421. $tbl_session_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_USER);
  422. $tbl_url_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  423. global $_user;
  424. if(is_array($id_checked)) {
  425. $id_checked = Database::escape_string(implode(',',$id_checked));
  426. } else {
  427. $id_checked = intval($id_checked);
  428. }
  429. if (!api_is_platform_admin() && !$from_ws) {
  430. $sql = 'SELECT session_admin_id FROM '.Database :: get_main_table(TABLE_MAIN_SESSION).' WHERE id='.$id_checked;
  431. $rs = Database::query($sql);
  432. if (Database::result($rs,0,0)!=$_user['user_id']) {
  433. api_not_allowed(true);
  434. }
  435. }
  436. Database::query("DELETE FROM $tbl_session WHERE id IN($id_checked)");
  437. Database::query("DELETE FROM $tbl_session_rel_course WHERE id_session IN($id_checked)");
  438. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session IN($id_checked)");
  439. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session IN($id_checked)");
  440. Database::query("DELETE FROM $tbl_url_session WHERE session_id IN($id_checked)");
  441. // delete extra session fields
  442. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  443. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  444. // Delete extra fields from session where field variable is "SECCION"
  445. $sql = "SELECT t_sfv.field_id FROM $t_sfv t_sfv, $t_sf t_sf WHERE t_sfv.session_id = '$id_checked' AND t_sf.field_variable = 'SECCION' ";
  446. $rs_field = Database::query($sql);
  447. $field_id = 0;
  448. if (Database::num_rows($rs_field) == 1) {
  449. $row_field = Database::fetch_row($rs_field);
  450. $field_id = $row_field[0];
  451. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  452. $rs_delete_sfv = Database::query($sql_delete_sfv);
  453. }
  454. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  455. $rs_field_id = Database::query($sql);
  456. if (Database::num_rows($rs_field_id) == 0) {
  457. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  458. $rs_delete_sf = Database::query($sql_delete_sf);
  459. }
  460. /*
  461. $sql = "SELECT distinct field_id FROM $t_sfv WHERE session_id = '$id_checked'";
  462. $res_field_ids = @Database::query($sql);
  463. if (Database::num_rows($res_field_ids) > 0) {
  464. while($row_field_id = Database::fetch_row($res_field_ids)){
  465. $field_ids[] = $row_field_id[0];
  466. }
  467. }
  468. //delete from table_session_field_value from a given session id
  469. $sql_session_field_value = "DELETE FROM $t_sfv WHERE session_id = '$id_checked'";
  470. @Database::query($sql_session_field_value);
  471. $sql = "SELECT distinct field_id FROM $t_sfv";
  472. $res_field_all_ids = @Database::query($sql);
  473. if (Database::num_rows($res_field_all_ids) > 0) {
  474. while($row_field_all_id = Database::fetch_row($res_field_all_ids)){
  475. $field_all_ids[] = $row_field_all_id[0];
  476. }
  477. }
  478. if (count($field_ids) > 0 && count($field_all_ids) > 0) {
  479. foreach($field_ids as $field_id) {
  480. // check if field id is used into table field value
  481. if (in_array($field_id,$field_all_ids)) {
  482. continue;
  483. } else {
  484. $sql_session_field = "DELETE FROM $t_sf WHERE id = '$field_id'";
  485. Database::query($sql_session_field);
  486. }
  487. }
  488. }
  489. */
  490. // Add event to system log
  491. $user_id = api_get_user_id();
  492. event_system(LOG_SESSION_DELETE, LOG_SESSION_ID, $id_checked, api_get_utc_datetime(), $user_id);
  493. }
  494. /**
  495. * Subscribes users to the given session and optionally (default) unsubscribes previous users
  496. * @author Carlos Vargas from existing code
  497. * @param integer Session ID
  498. * @param array List of user IDs
  499. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  500. * @return void Nothing, or false on error
  501. **/
  502. public static function suscribe_users_to_session($id_session, $user_list, $session_visibility = SESSION_VISIBLE_READ_ONLY, $empty_users = true, $send_email=false) {
  503. if ($id_session!= strval(intval($id_session))) return false;
  504. foreach($user_list as $intUser){
  505. if ($intUser!= strval(intval($intUser))) return false;
  506. }
  507. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  508. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  509. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  510. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  511. $session_info = api_get_session_info($id_session);
  512. $session_name = $session_info['name'];
  513. //from function parameter
  514. if (empty($session_visibility)) {
  515. $session_visibility = $session_info['visibility']; //loaded from DB
  516. //default status loaded if empty
  517. if (empty($session_visibility))
  518. $session_visibility = SESSION_VISIBLE_READ_ONLY; // by default readonly 1
  519. } else {
  520. if (!in_array($session_visibility, array(SESSION_VISIBLE_READ_ONLY, SESSION_VISIBLE, SESSION_INVISIBLE))) {
  521. $session_visibility = SESSION_VISIBLE_READ_ONLY;
  522. }
  523. }
  524. $sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user WHERE id_session = '$id_session' ";
  525. $result = Database::query($sql);
  526. $existingUsers = array();
  527. while($row = Database::fetch_array($result)) {
  528. $existingUsers[] = $row['id_user'];
  529. }
  530. $sql = "SELECT course_code FROM $tbl_session_rel_course WHERE id_session = '$id_session'";
  531. $result = Database::query($sql);
  532. $course_list = array();
  533. while($row = Database::fetch_array($result)) {
  534. $course_list[] = $row['course_code'];
  535. }
  536. if ($send_email) {
  537. //global $_configuration;
  538. //sending emails only
  539. if (is_array($user_list) && count($user_list)>0) {
  540. foreach ($user_list as $user_id) {
  541. if (!in_array($user_id, $existingUsers)) {
  542. $subject = '['.get_setting('siteName').'] '.get_lang('YourReg').' '.get_setting('siteName');
  543. $user_info = api_get_user_info($user_id);
  544. $content = get_lang('Dear')." ".stripslashes($user_info['complete_name']).",\n\n".sprintf(get_lang('YouAreRegisterToSessionX'), $session_name) ." \n\n" .get_lang('Address') ." ". get_setting('siteName') ." ". get_lang('Is') ." : ". api_get_path(WEB_PATH) ."\n\n". get_lang('Problem'). "\n\n". get_lang('Formula').",\n\n".get_setting('administratorName')." ".get_setting('administratorSurname')."\n". get_lang('Manager'). " ".get_setting('siteName')."\nT. ".get_setting('administratorTelephone')."\n" .get_lang('Email') ." : ".get_setting('emailAdministrator');
  545. MessageManager::send_message($user_id, $subject, $content, array(), array(), null, null, null, null, null);
  546. /*$emailheaders = 'From: '.get_setting('administratorName').' '.get_setting('administratorSurname').' <'.get_setting('emailAdministrator').">\n";
  547. $emailheaders .= 'Reply-To: '.get_setting('emailAdministrator');
  548. $emailbody = get_lang('Dear')." ".stripslashes(api_get_person_name($firstname, $lastname)).",\n\n".sprintf(get_lang('YouAreRegisterToSessionX'), $session_name) ." \n\n" .get_lang('Address') ." ". get_setting('siteName') ." ". get_lang('Is') ." : ". api_get_path(WEB_PATH) ."\n\n". get_lang('Problem'). "\n\n". get_lang('Formula').",\n\n".get_setting('administratorName')." ".get_setting('administratorSurname')."\n". get_lang('Manager'). " ".get_setting('siteName')."\nT. ".get_setting('administratorTelephone')."\n" .get_lang('Email') ." : ".get_setting('emailAdministrator');
  549. @api_send_mail($emailto, $emailsubject, $emailbody, $emailheaders);*/
  550. }
  551. }
  552. }
  553. }
  554. foreach ($course_list as $enreg_course) {
  555. // for each course in the session
  556. $nbr_users=0;
  557. $enreg_course = Database::escape_string($enreg_course);
  558. // delete existing users
  559. if ($empty_users) {
  560. foreach ($existingUsers as $existing_user) {
  561. if (!in_array($existing_user, $user_list)) {
  562. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course' AND id_user='$existing_user' ";
  563. Database::query($sql);
  564. if (Database::affected_rows()) {
  565. $nbr_users--;
  566. }
  567. }
  568. }
  569. }
  570. //Replace with this new function
  571. //
  572. // insert new users into session_rel_course_rel_user and ignore if they already exist
  573. foreach ($user_list as $enreg_user) {
  574. if(!in_array($enreg_user, $existingUsers)) {
  575. $enreg_user = Database::escape_string($enreg_user);
  576. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user,visibility) VALUES('$id_session','$enreg_course','$enreg_user','$session_visibility')";
  577. Database::query($insert_sql);
  578. if(Database::affected_rows()) {
  579. $nbr_users++;
  580. }
  581. }
  582. }
  583. // count users in this session-course relation
  584. $sql = "SELECT COUNT(id_user) as nbUsers FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course' AND status<>2";
  585. $rs = Database::query($sql);
  586. list($nbr_users) = Database::fetch_array($rs);
  587. // update the session-course relation to add the users total
  588. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
  589. Database::query($update_sql);
  590. }
  591. // Delete users from the session
  592. if ($empty_users===true) {
  593. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."");
  594. }
  595. // Insert missing users into session
  596. $nbr_users = 0;
  597. foreach ($user_list as $enreg_user) {
  598. $enreg_user = Database::escape_string($enreg_user);
  599. $nbr_users++;
  600. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user (id_session, id_user) VALUES ('$id_session','$enreg_user')";
  601. Database::query($insert_sql);
  602. }
  603. // update number of users in the session
  604. $nbr_users = count($user_list);
  605. if ($empty_users) {
  606. // update number of users in the session
  607. $update_sql = "UPDATE $tbl_session SET nbr_users= $nbr_users WHERE id='$id_session' ";
  608. Database::query($update_sql);
  609. } else {
  610. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users + $nbr_users WHERE id='$id_session' ";
  611. Database::query($update_sql);
  612. }
  613. }
  614. function subscribe_users_to_session_course($user_list, $session_id, $course_code, $session_visibility = SESSION_VISIBLE_READ_ONLY ) {
  615. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  616. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  617. if (empty($user_list) || empty($session_id) || empty($course_code)) {
  618. return false;
  619. }
  620. $session_id = intval($session_id);
  621. $course_code = Database::escape_string($course_code);
  622. $session_visibility = intval($session_visibility);
  623. $nbr_users = 0;
  624. foreach ($user_list as $enreg_user) {
  625. //if (!in_array($enreg_user, $existingUsers)) {
  626. $enreg_user = intval($enreg_user);
  627. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user,visibility)
  628. VALUES ('$session_id','$course_code','$enreg_user','$session_visibility')";
  629. Database::query($insert_sql);
  630. if (Database::affected_rows()) {
  631. $nbr_users++;
  632. }
  633. //}
  634. }
  635. // count users in this session-course relation
  636. $sql = "SELECT COUNT(id_user) as nbUsers FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course' AND status<>2";
  637. $rs = Database::query($sql);
  638. list($nbr_users) = Database::fetch_array($rs);
  639. // update the session-course relation to add the users total
  640. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
  641. Database::query($update_sql);
  642. }
  643. /**
  644. * Unsubscribe user from session
  645. *
  646. * @param int Session id
  647. * @param int User id
  648. * @return bool True in case of success, false in case of error
  649. */
  650. public static function unsubscribe_user_from_session($session_id, $user_id) {
  651. $session_id = (int)$session_id;
  652. $user_id = (int)$user_id;
  653. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  654. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  655. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  656. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  657. $delete_sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user ='$user_id' AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  658. Database::query($delete_sql);
  659. $return = Database::affected_rows();
  660. // Update number of users
  661. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users - $return WHERE id='$session_id' ";
  662. Database::query($update_sql);
  663. // Get the list of courses related to this session
  664. $course_list = SessionManager::get_course_list_by_session_id($session_id);
  665. if(!empty($course_list)) {
  666. foreach($course_list as $course) {
  667. $course_code = $course['code'];
  668. // Delete user from course
  669. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session='$session_id' AND course_code='$course_code' AND id_user='$user_id'");
  670. if(Database::affected_rows()) {
  671. // Update number of users in this relation
  672. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=nbr_users - 1 WHERE id_session='$session_id' AND course_code='$course_code'");
  673. }
  674. }
  675. }
  676. return true;
  677. }
  678. /** Subscribes courses to the given session and optionally (default) unsubscribes previous users
  679. * @author Carlos Vargas from existing code
  680. * @param int Session ID
  681. * @param array List of courses IDs
  682. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  683. * @return void Nothing, or false on error
  684. **/
  685. public static function add_courses_to_session ($id_session, $course_list, $empty_courses=true) {
  686. // security checks
  687. if ($id_session!= strval(intval($id_session))) { return false; }
  688. //foreach($course_list as $intCourse){
  689. // if ($intCourse!= strval(intval($intCourse))) { return false; }
  690. //}
  691. // initialisation
  692. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  693. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  694. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  695. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  696. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  697. // get general coach ID
  698. $id_coach = Database::query("SELECT id_coach FROM $tbl_session WHERE id=$id_session");
  699. $id_coach = Database::fetch_array($id_coach);
  700. $id_coach = $id_coach[0];
  701. // get list of courses subscribed to this session
  702. $rs = Database::query("SELECT course_code FROM $tbl_session_rel_course WHERE id_session=$id_session");
  703. $existingCourses = Database::store_result($rs);
  704. $nbr_courses=count($existingCourses);
  705. // get list of users subscribed to this session
  706. $sql="SELECT id_user
  707. FROM $tbl_session_rel_user
  708. WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  709. $result=Database::query($sql);
  710. $user_list=Database::store_result($result);
  711. // remove existing courses from the session
  712. if ($empty_courses===true) {
  713. foreach ($existingCourses as $existingCourse) {
  714. if (!in_array($existingCourse['course_code'], $course_list)){
  715. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  716. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  717. }
  718. }
  719. $nbr_courses=0;
  720. }
  721. // Pass through the courses list we want to add to the session
  722. foreach ($course_list as $enreg_course) {
  723. $enreg_course = Database::escape_string($enreg_course);
  724. $exists = false;
  725. // check if the course we want to add is already subscribed
  726. foreach ($existingCourses as $existingCourse) {
  727. if ($enreg_course == $existingCourse['course_code']) {
  728. $exists=true;
  729. }
  730. }
  731. if (!$exists) {
  732. //if the course isn't subscribed yet
  733. $sql_insert_rel_course= "INSERT INTO $tbl_session_rel_course (id_session,course_code) VALUES ('$id_session','$enreg_course')";
  734. Database::query($sql_insert_rel_course);
  735. //We add the current course in the existing courses array, to avoid adding another time the current course
  736. $existingCourses[]=array('course_code'=>$enreg_course);
  737. $nbr_courses++;
  738. // subscribe all the users from the session to this course inside the session
  739. $nbr_users=0;
  740. foreach ($user_list as $enreg_user) {
  741. $enreg_user_id = Database::escape_string($enreg_user['id_user']);
  742. $sql_insert = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user (id_session,course_code,id_user) VALUES ('$id_session','$enreg_course','$enreg_user_id')";
  743. Database::query($sql_insert);
  744. if (Database::affected_rows()) {
  745. $nbr_users++;
  746. }
  747. }
  748. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'");
  749. }
  750. }
  751. Database::query("UPDATE $tbl_session SET nbr_courses=$nbr_courses WHERE id='$id_session'");
  752. }
  753. /**
  754. * Unsubscribe course from a session
  755. *
  756. * @param int Session id
  757. * @param int Course id
  758. * @return bool True in case of success, false otherwise
  759. */
  760. public static function unsubscribe_course_from_session($session_id, $course_id) {
  761. $session_id = (int)$session_id;
  762. $course_id = (int)$course_id;
  763. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  764. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  765. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  766. // Get course code
  767. $course_code = CourseManager::get_course_code_from_course_id($course_id);
  768. if($course_code == 0) {
  769. return false;
  770. }
  771. // Unsubscribe course
  772. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='$course_code' AND id_session='$session_id'");
  773. $nb_affected = Database::affected_rows();
  774. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='$course_code' AND id_session='$session_id'");
  775. if($nb_affected > 0) {
  776. // Update number of courses in the session
  777. Database::query("UPDATE $tbl_session SET nbr_courses= nbr_courses + $nb_affected WHERE id='$session_id' ");
  778. return true;
  779. } else {
  780. return false;
  781. }
  782. }
  783. /**
  784. * Creates a new extra field for a given session
  785. * @param string Field's internal variable name
  786. * @param int Field's type
  787. * @param string Field's language var name
  788. * @return int new extra field id
  789. */
  790. public static function create_session_extra_field ($fieldvarname, $fieldtype, $fieldtitle) {
  791. // database table definition
  792. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  793. $fieldvarname = Database::escape_string($fieldvarname);
  794. $fieldtitle = Database::escape_string($fieldtitle);
  795. $fieldtype = (int)$fieldtype;
  796. $time = time();
  797. $sql_field = "SELECT id FROM $t_sf WHERE field_variable = '$fieldvarname'";
  798. $res_field = Database::query($sql_field);
  799. $r_field = Database::fetch_row($res_field);
  800. if (Database::num_rows($res_field)>0) {
  801. $field_id = $r_field[0];
  802. } else {
  803. // save new fieldlabel into course_field table
  804. $sql = "SELECT MAX(field_order) FROM $t_sf";
  805. $res = Database::query($sql);
  806. $order = 0;
  807. if (Database::num_rows($res)>0) {
  808. $row = Database::fetch_row($res);
  809. $order = $row[0]+1;
  810. }
  811. $sql = "INSERT INTO $t_sf
  812. SET field_type = '$fieldtype',
  813. field_variable = '$fieldvarname',
  814. field_display_text = '$fieldtitle',
  815. field_order = '$order',
  816. tms = FROM_UNIXTIME($time)";
  817. $result = Database::query($sql);
  818. $field_id=Database::insert_id();
  819. }
  820. return $field_id;
  821. }
  822. /**
  823. * Update an extra field value for a given session
  824. * @param integer Course ID
  825. * @param string Field variable name
  826. * @param string Field value
  827. * @return boolean true if field updated, false otherwise
  828. */
  829. public static function update_session_extra_field_value ($session_id,$fname,$fvalue='') {
  830. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  831. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  832. $fname = Database::escape_string($fname);
  833. $session_id = (int)$session_id;
  834. $fvalues = '';
  835. if(is_array($fvalue))
  836. {
  837. foreach($fvalue as $val)
  838. {
  839. $fvalues .= Database::escape_string($val).';';
  840. }
  841. if(!empty($fvalues))
  842. {
  843. $fvalues = substr($fvalues,0,-1);
  844. }
  845. }
  846. else
  847. {
  848. $fvalues = Database::escape_string($fvalue);
  849. }
  850. $sqlsf = "SELECT * FROM $t_sf WHERE field_variable='$fname'";
  851. $ressf = Database::query($sqlsf);
  852. if(Database::num_rows($ressf)==1)
  853. { //ok, the field exists
  854. // Check if enumerated field, if the option is available
  855. $rowsf = Database::fetch_array($ressf);
  856. $tms = time();
  857. $sqlsfv = "SELECT * FROM $t_sfv WHERE session_id = '$session_id' AND field_id = '".$rowsf['id']."' ORDER BY id";
  858. $ressfv = Database::query($sqlsfv);
  859. $n = Database::num_rows($ressfv);
  860. if ($n>1) {
  861. //problem, we already have to values for this field and user combination - keep last one
  862. while($rowsfv = Database::fetch_array($ressfv))
  863. {
  864. if($n > 1)
  865. {
  866. $sqld = "DELETE FROM $t_sfv WHERE id = ".$rowsfv['id'];
  867. $resd = Database::query($sqld);
  868. $n--;
  869. }
  870. $rowsfv = Database::fetch_array($ressfv);
  871. if($rowsfv['field_value'] != $fvalues)
  872. {
  873. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  874. $resu = Database::query($sqlu);
  875. return($resu?true:false);
  876. }
  877. return true;
  878. }
  879. } else if ($n==1) {
  880. //we need to update the current record
  881. $rowsfv = Database::fetch_array($ressfv);
  882. if($rowsfv['field_value'] != $fvalues)
  883. {
  884. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  885. //error_log('UM::update_extra_field_value: '.$sqlu);
  886. $resu = Database::query($sqlu);
  887. return($resu?true:false);
  888. }
  889. return true;
  890. } else {
  891. $sqli = "INSERT INTO $t_sfv (session_id,field_id,field_value,tms) " .
  892. "VALUES ('$session_id',".$rowsf['id'].",'$fvalues',FROM_UNIXTIME($tms))";
  893. //error_log('UM::update_extra_field_value: '.$sqli);
  894. $resi = Database::query($sqli);
  895. return($resi?true:false);
  896. }
  897. } else {
  898. return false; //field not found
  899. }
  900. }
  901. /**
  902. * Checks the relationship between a session and a course.
  903. * @param int $session_id
  904. * @param int $course_id
  905. * @return bool Returns TRUE if the session and the course are related, FALSE otherwise.
  906. * */
  907. public static function relation_session_course_exist ($session_id, $course_id) {
  908. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  909. $return_value = false;
  910. $sql= "SELECT course_code FROM $tbl_session_course WHERE id_session = ".Database::escape_string($session_id)." AND course_code = '".Database::escape_string($course_id)."'";
  911. $result = Database::query($sql);
  912. $num = Database::num_rows($result);
  913. if ($num>0) {
  914. $return_value = true;
  915. }
  916. return $return_value;
  917. }
  918. /**
  919. * Get the session information by name
  920. * @param string session name
  921. * @return mixed false if the session does not exist, array if the session exist
  922. * */
  923. public static function get_session_by_name ($session_name) {
  924. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  925. $sql = 'SELECT id, id_coach, date_start, date_end FROM '.$tbl_session.' WHERE name="'.Database::escape_string($session_name).'"';
  926. $result = Database::query($sql);
  927. $num = Database::num_rows($result);
  928. if ($num>0){
  929. return Database::fetch_array($result);
  930. } else {
  931. return false;
  932. }
  933. }
  934. /**
  935. * Create a session category
  936. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  937. * @param string name
  938. * @param integer year_start
  939. * @param integer month_start
  940. * @param integer day_start
  941. * @param integer year_end
  942. * @param integer month_end
  943. * @param integer day_end
  944. * @return $id_session;
  945. **/
  946. public static function create_category_session($sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  947. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  948. $name= trim($sname);
  949. $year_start= intval($syear_start);
  950. $month_start=intval($smonth_start);
  951. $day_start=intval($sday_start);
  952. $year_end=intval($syear_end);
  953. $month_end=intval($smonth_end);
  954. $day_end=intval($sday_end);
  955. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  956. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  957. if (empty($name)) {
  958. $msg=get_lang('SessionCategoryNameIsRequired');
  959. return $msg;
  960. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  961. $msg=get_lang('InvalidStartDate');
  962. return $msg;
  963. } elseif (!$month_end && !$day_end && !$year_end) {
  964. $date_end = "null";
  965. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  966. $msg=get_lang('InvalidEndDate');
  967. return $msg;
  968. } elseif($date_start >= $date_end) {
  969. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  970. return $msg;
  971. }
  972. $access_url_id = api_get_current_access_url_id();
  973. $sql = "INSERT INTO $tbl_session_category (name, date_start, date_end, access_url_id)
  974. VALUES('".Database::escape_string($name)."','$date_start','$date_end', '$access_url_id')";
  975. Database::query($sql);
  976. $id_session = Database::insert_id();
  977. // Add event to system log
  978. $user_id = api_get_user_id();
  979. event_system(LOG_SESSION_CATEGORY_CREATE, LOG_SESSION_CATEGORY_ID, $id_session, api_get_utc_datetime(), $user_id);
  980. return $id_session;
  981. }
  982. /**
  983. * Edit a sessions categories
  984. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>,from existing code
  985. * @param integer id
  986. * @param string name
  987. * @param integer year_start
  988. * @param integer month_start
  989. * @param integer day_start
  990. * @param integer year_end
  991. * @param integer month_end
  992. * @param integer day_end
  993. * @return $id;
  994. * The parameter id is a primary key
  995. **/
  996. public static function edit_category_session($id, $sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  997. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  998. $name= trim($sname);
  999. $year_start= intval($syear_start);
  1000. $month_start=intval($smonth_start);
  1001. $day_start=intval($sday_start);
  1002. $year_end=intval($syear_end);
  1003. $month_end=intval($smonth_end);
  1004. $day_end=intval($sday_end);
  1005. $id=intval($id);
  1006. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  1007. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  1008. if (empty($name)) {
  1009. $msg=get_lang('SessionCategoryNameIsRequired');
  1010. return $msg;
  1011. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  1012. $msg=get_lang('InvalidStartDate');
  1013. return $msg;
  1014. } elseif (!$month_end && !$day_end && !$year_end) {
  1015. $date_end = null;
  1016. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  1017. $msg=get_lang('InvalidEndDate');
  1018. return $msg;
  1019. } elseif($date_start >= $date_end) {
  1020. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  1021. return $msg;
  1022. }
  1023. if ( $date_end <> null ) {
  1024. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1025. ", date_end = '$date_end' WHERE id= '".$id."' ";
  1026. } else {
  1027. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1028. ", date_end = NULL WHERE id= '".$id."' ";
  1029. }
  1030. $result = Database::query($sql);
  1031. return ($result? true:false);
  1032. }
  1033. /**
  1034. * Delete sessions categories
  1035. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  1036. * @param array id_checked
  1037. * @param bool include delete session
  1038. * @param bool optional, true if the function is called by a webservice, false otherwise.
  1039. * @return void Nothing, or false on error
  1040. * The parameters is a array to delete sessions
  1041. **/
  1042. public static function delete_session_category($id_checked, $delete_session = false,$from_ws = false){
  1043. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1044. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1045. if (is_array($id_checked)) {
  1046. $id_checked = Database::escape_string(implode(',',$id_checked));
  1047. } else {
  1048. $id_checked = intval($id_checked);
  1049. }
  1050. //Setting session_category_id to 0
  1051. $sql = "UPDATE $tbl_session SET session_category_id = 0 WHERE session_category_id IN (".$id_checked.")";
  1052. Database::query($sql);
  1053. $sql = "SELECT id FROM $tbl_session WHERE session_category_id IN (".$id_checked.")";
  1054. $result = @Database::query($sql);
  1055. while ($rows = Database::fetch_array($result)) {
  1056. $session_id = $rows['id'];
  1057. if ($delete_session) {
  1058. if ($from_ws) {
  1059. SessionManager::delete_session($session_id,true);
  1060. } else {
  1061. SessionManager::delete_session($session_id);
  1062. }
  1063. }
  1064. }
  1065. $sql = "DELETE FROM $tbl_session_category WHERE id IN (".$id_checked.")";
  1066. $rs = @Database::query($sql);
  1067. $result = Database::affected_rows();
  1068. // Add event to system log
  1069. $user_id = api_get_user_id();
  1070. event_system(LOG_SESSION_CATEGORY_DELETE, LOG_SESSION_CATEGORY_ID, $id_checked, api_get_utc_datetime(), $user_id);
  1071. // delete extra session fields where field variable is "PERIODO"
  1072. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1073. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1074. $sql = "SELECT t_sfv.field_id FROM $t_sfv t_sfv, $t_sf t_sf WHERE t_sfv.session_id = '$id_checked' AND t_sf.field_variable = 'PERIODO' ";
  1075. $rs_field = Database::query($sql);
  1076. $field_id = 0;
  1077. if (Database::num_rows($rs_field) > 0) {
  1078. $row_field = Database::fetch_row($rs_field);
  1079. $field_id = $row_field[0];
  1080. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  1081. $rs_delete_sfv = Database::query($sql_delete_sfv);
  1082. }
  1083. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  1084. $rs_field_id = Database::query($sql);
  1085. if (Database::num_rows($rs_field_id) == 0) {
  1086. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  1087. $rs_delete_sf = Database::query($sql_delete_sf);
  1088. }
  1089. return true;
  1090. }
  1091. /**
  1092. * Get a list of sessions of which the given conditions match with an = 'cond'
  1093. * @param array $conditions a list of condition (exemple : array('status =' =>STUDENT) or array('s.name LIKE' => "%$needle%")
  1094. * @param array $order_by a list of fields on which sort
  1095. * @return array An array with all sessions of the platform.
  1096. * @todo optional course code parameter, optional sorting parameters...
  1097. */
  1098. public static function get_sessions_list($conditions = array(), $order_by = array()) {
  1099. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1100. $session_category_table = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1101. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  1102. $table_access_url_rel_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1103. $access_url_id = api_get_current_access_url_id();
  1104. $return_array = array();
  1105. $sql_query = " SELECT s.id, s.name, s.nbr_courses, s.date_start, s.date_end, u.firstname, u.lastname, sc.name as category_name, s.promotion_id
  1106. FROM $session_table s
  1107. INNER JOIN $user_table u ON s.id_coach = u.user_id
  1108. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  1109. LEFT JOIN $session_category_table sc ON s.session_category_id = sc.id
  1110. WHERE ar.access_url_id = $access_url_id ";
  1111. if (count($conditions)>0) {
  1112. $sql_query .= ' AND ';
  1113. foreach ($conditions as $field=>$value) {
  1114. $field = Database::escape_string($field);
  1115. $value = Database::escape_string($value);
  1116. $sql_query .= $field." '".$value."'";
  1117. }
  1118. }
  1119. if (count($order_by)>0) {
  1120. $sql_query .= ' ORDER BY '.Database::escape_string(implode(',',$order_by));
  1121. }
  1122. //echo $sql_query;
  1123. $sql_result = Database::query($sql_query);
  1124. if (Database::num_rows($sql_result)>0) {
  1125. while ($result = Database::fetch_array($sql_result)) {
  1126. $return_array[$result['id']] = $result;
  1127. }
  1128. }
  1129. return $return_array;
  1130. }
  1131. /**
  1132. * Get the session category information by id
  1133. * @param string session category ID
  1134. * @return mixed false if the session category does not exist, array if the session category exists
  1135. */
  1136. public static function get_session_category ($id) {
  1137. $id = intval($id);
  1138. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1139. $sql = "SELECT id, name, date_start, date_end FROM $tbl_session_category WHERE id= $id";
  1140. $result = Database::query($sql);
  1141. $num = Database::num_rows($result);
  1142. if ($num>0){
  1143. return Database::fetch_array($result);
  1144. } else {
  1145. return false;
  1146. }
  1147. }
  1148. /**
  1149. * Get all session categories (filter by access_url_id)
  1150. * @return mixed false if the session category does not exist, array if the session category exists
  1151. */
  1152. public static function get_all_session_category() {
  1153. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1154. $id = api_get_current_access_url_id();
  1155. $sql = 'SELECT * FROM '.$tbl_session_category.' WHERE access_url_id ="'.$id.'" ORDER BY name ASC';
  1156. $result = Database::query($sql);
  1157. if (Database::num_rows($result) > 0 ){
  1158. $data = Database::store_result($result,'ASSOC');
  1159. return $data;
  1160. } else {
  1161. return false;
  1162. }
  1163. }
  1164. /**
  1165. * Assign a coach to course in session with status = 2
  1166. * @param int - user id
  1167. * @param int - session id
  1168. * @param string - course code
  1169. * @param bool - optional, if is true the user don't be a coach now, otherwise it'll assign a coach
  1170. * @return bool true if there are affected rows, otherwise false
  1171. */
  1172. public static function set_coach_to_course_session($user_id, $session_id = 0, $course_code = '',$nocoach = false) {
  1173. // Definition of variables
  1174. $user_id = intval($user_id);
  1175. if (!empty($session_id)) {
  1176. $session_id = intval($session_id);
  1177. } else {
  1178. $session_id = api_get_session_id();
  1179. }
  1180. if (!empty($course_code)) {
  1181. $course_code = Database::escape_string($course_code);
  1182. } else {
  1183. $course_code = api_get_course_id();
  1184. }
  1185. // definitios of tables
  1186. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1187. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1188. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1189. // check if user is a teacher
  1190. $sql= "SELECT * FROM $tbl_user WHERE status='1' AND user_id = '$user_id'";
  1191. $rs_check_user = Database::query($sql);
  1192. if (Database::num_rows($rs_check_user) > 0) {
  1193. if ($nocoach) {
  1194. // check if user_id exits int session_rel_user
  1195. $sql = "SELECT id_user FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user = '$user_id'";
  1196. $res = Database::query($sql);
  1197. if (Database::num_rows($res) > 0) {
  1198. // The user don't be a coach now
  1199. $sql = "UPDATE $tbl_session_rel_course_rel_user SET status = 0 WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1200. $rs_update = Database::query($sql);
  1201. if (Database::affected_rows() > 0) return true;
  1202. else return false;
  1203. } else {
  1204. // The user don't be a coach now
  1205. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1206. $rs_delete = Database::query($sql);
  1207. if (Database::affected_rows() > 0) return true;
  1208. else return false;
  1209. }
  1210. } else {
  1211. // Assign user like a coach to course
  1212. // First check if the user is registered in the course
  1213. $sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id'";
  1214. $rs_check = Database::query($sql);
  1215. //Then update or insert
  1216. if (Database::num_rows($rs_check) > 0) {
  1217. $sql = "UPDATE $tbl_session_rel_course_rel_user SET status = 2 WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1218. $rs_update = Database::query($sql);
  1219. if (Database::affected_rows() > 0) return true;
  1220. else return false;
  1221. } else {
  1222. $sql = " INSERT INTO $tbl_session_rel_course_rel_user(id_session, course_code, id_user, status) VALUES('$session_id', '$course_code', '$user_id', 2)";
  1223. $rs_insert = Database::query($sql);
  1224. if (Database::affected_rows() > 0) return true;
  1225. else return false;
  1226. }
  1227. }
  1228. } else {
  1229. return false;
  1230. }
  1231. }
  1232. /**
  1233. * Subscribes sessions to human resource manager (Dashboard feature)
  1234. * @param int Human Resource Manager id
  1235. * @param array Sessions id
  1236. * @param int Relation type
  1237. **/
  1238. public static function suscribe_sessions_to_hr_manager($hr_manager_id,$sessions_list) {
  1239. global $_configuration;
  1240. // Database Table Definitions
  1241. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1242. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1243. $tbl_session_rel_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1244. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1245. $hr_manager_id = intval($hr_manager_id);
  1246. $affected_rows = 0;
  1247. //Deleting assigned sessions to hrm_id
  1248. if ($_configuration['multiple_access_urls']) {
  1249. $sql = "SELECT id_session FROM $tbl_session_rel_user s INNER JOIN $tbl_session_rel_access_url a ON (a.session_id = s.id_session) WHERE id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH." AND access_url_id = ".api_get_current_access_url_id()."";
  1250. } else {
  1251. $sql = "SELECT id_session FROM $tbl_session_rel_user s WHERE id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH."";
  1252. }
  1253. $result = Database::query($sql);
  1254. if (Database::num_rows($result) > 0) {
  1255. while ($row = Database::fetch_array($result)) {
  1256. $sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = {$row['id_session']} AND id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH." ";
  1257. Database::query($sql);
  1258. }
  1259. }
  1260. /*
  1261. //Deleting assigned courses in sessions to hrm_id
  1262. $sql = "SELECT * FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1263. $result = Database::query($sql);
  1264. if (Database::num_rows($result) > 0) {
  1265. $sql = "DELETE FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1266. Database::query($sql);
  1267. }
  1268. */
  1269. // inserting new sessions list
  1270. if (is_array($sessions_list)) {
  1271. foreach ($sessions_list as $session_id) {
  1272. $session_id = intval($session_id);
  1273. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user(id_session, id_user, relation_type) VALUES($session_id, $hr_manager_id, '".SESSION_RELATION_TYPE_RRHH."')";
  1274. Database::query($insert_sql);
  1275. $affected_rows = Database::affected_rows();
  1276. }
  1277. }
  1278. return $affected_rows;
  1279. }
  1280. /**
  1281. * Get sessions followed by human resources manager
  1282. * @param int Human resources manager or Session admin id
  1283. * @return array sessions
  1284. */
  1285. public static function get_sessions_followed_by_drh($hr_manager_id) {
  1286. global $_configuration;
  1287. // Database Table Definitions
  1288. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1289. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1290. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1291. $hr_manager_id = intval($hr_manager_id);
  1292. $assigned_sessions_to_hrm = array();
  1293. if ($_configuration['multiple_access_urls']) {
  1294. $sql = "SELECT * FROM $tbl_session s INNER JOIN $tbl_session_rel_user sru ON (sru.id_session = s.id) LEFT JOIN $tbl_session_rel_access_url a ON (s.id = a.session_id)
  1295. WHERE sru.id_user = '$hr_manager_id' AND sru.relation_type = '".SESSION_RELATION_TYPE_RRHH."' AND access_url_id = ".api_get_current_access_url_id()."";
  1296. } else {
  1297. $sql = "SELECT * FROM $tbl_session s
  1298. INNER JOIN $tbl_session_rel_user sru ON sru.id_session = s.id AND sru.id_user = '$hr_manager_id' AND sru.relation_type = '".SESSION_RELATION_TYPE_RRHH."' ";
  1299. }
  1300. $rs_assigned_sessions = Database::query($sql);
  1301. if (Database::num_rows($rs_assigned_sessions) > 0) {
  1302. while ($row_assigned_sessions = Database::fetch_array($rs_assigned_sessions)) {
  1303. $assigned_sessions_to_hrm[$row_assigned_sessions['id']] = $row_assigned_sessions;
  1304. }
  1305. }
  1306. return $assigned_sessions_to_hrm;
  1307. }
  1308. /**
  1309. * Gets the list of courses by session filtered by access_url
  1310. * @param int session id
  1311. * @return array list of courses
  1312. */
  1313. public static function get_course_list_by_session_id ($session_id) {
  1314. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  1315. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1316. // select the courses
  1317. $sql = "SELECT * FROM $tbl_course c INNER JOIN $tbl_session_rel_course src ON c.code = src.course_code
  1318. WHERE src.id_session = '$session_id' ORDER BY title;";
  1319. $result = Database::query($sql);
  1320. $num_rows = Database::num_rows($result);
  1321. $courses = array();
  1322. if ($num_rows > 0) {
  1323. while ($row = Database::fetch_array($result,'ASSOC')) {
  1324. $courses[$row['id']] = $row;
  1325. }
  1326. }
  1327. return $courses;
  1328. }
  1329. /**
  1330. * Get the session id based on the original id and field name in the extra fields. Returns 0 if session was not found
  1331. *
  1332. * @param string Original session id
  1333. * @param string Original field name
  1334. * @return int Session id
  1335. */
  1336. public static function get_session_id_from_original_id($original_session_id_value, $original_session_id_name) {
  1337. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1338. $table_field = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1339. $sql_session = "SELECT session_id FROM $table_field sf INNER JOIN $t_sfv sfv ON sfv.field_id=sf.id WHERE field_variable='$original_session_id_name' AND field_value='$original_session_id_value'";
  1340. $res_session = Database::query($sql_session);
  1341. $row = Database::fetch_object($res_session);
  1342. if ($row) {
  1343. return $row->session_id;
  1344. } else {
  1345. return 0;
  1346. }
  1347. }
  1348. /**
  1349. * Get users by session
  1350. * @param int sesssion id
  1351. * @param int filter by status
  1352. * @return array a list with an user list
  1353. */
  1354. public static function get_users_by_session($id, $with_status = null) {
  1355. if (empty($id)) {
  1356. return array();
  1357. }
  1358. $id = intval($id);
  1359. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1360. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1361. $sql = "SELECT $tbl_user.user_id, lastname, firstname, username
  1362. FROM $tbl_user INNER JOIN $tbl_session_rel_user
  1363. ON $tbl_user.user_id = $tbl_session_rel_user.id_user
  1364. AND $tbl_session_rel_user.id_session = $id";
  1365. if (isset($with_status) && $with_status != '') {
  1366. $with_status = intval($with_status);
  1367. $sql .= " WHERE relation_type = $with_status ";
  1368. }
  1369. $result = Database::query($sql);
  1370. while ($row = Database::fetch_array($result,'ASSOC')) {
  1371. $return_array[] = $row;
  1372. }
  1373. return $return_array;
  1374. }
  1375. public static function get_sessions_by_coach($user_id) {
  1376. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1377. return Database::select('*', $session_table, array('where'=>array('id_coach = ?'=>$user_id)));
  1378. }
  1379. /*
  1380. public static function get_coaches_by_session($session_id, $course_code) {
  1381. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1382. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1383. $sql = "SELECT user.user_id
  1384. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1385. WHERE session_rcru.id_user = user.user_id AND
  1386. session_rcru.id_session = '".intval($session_id)."' AND
  1387. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1388. session_rcru.status = 2 ";
  1389. $result = Database::query($sql);
  1390. while ($row = Database::fetch_array($result,'ASSOC')) {
  1391. $return_array[] = $row;
  1392. }
  1393. return $return_array;
  1394. }*/
  1395. /**
  1396. * Gets user status within a session
  1397. * @param $user_id
  1398. * @param $course_code
  1399. * @param $session_id
  1400. * @return unknown_type
  1401. */
  1402. public static function get_user_status_in_session($user_id, $course_code, $session_id) {
  1403. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1404. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1405. $sql = "SELECT session_rcru.status
  1406. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1407. WHERE session_rcru.id_user = user.user_id AND
  1408. session_rcru.id_session = '".intval($session_id)."' AND
  1409. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1410. user.user_id = ".intval($user_id);
  1411. $result = Database::query($sql);
  1412. $status = false;
  1413. if (Database::num_rows($result)) {
  1414. $status = Database::fetch_row($result);
  1415. $status = $status['0'];
  1416. }
  1417. return $status;
  1418. }
  1419. function get_all_sessions_by_promotion($id) {
  1420. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1421. return Database::select('*', $t, array('where'=>array('promotion_id = ?'=>$id)));
  1422. }
  1423. function suscribe_sessions_to_promotion($promotion_id, $list) {
  1424. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1425. $params = array();
  1426. $params['promotion_id'] = 0;
  1427. Database::update($t, $params, array('promotion_id = ?'=>$promotion_id));
  1428. $params['promotion_id'] = $promotion_id;
  1429. if (!empty($list)) {
  1430. foreach ($list as $session_id) {
  1431. $session_id= intval($session_id);
  1432. Database::update($t, $params, array('id = ?'=>$session_id));
  1433. }
  1434. }
  1435. }
  1436. /**
  1437. * Updates a session status
  1438. * @param int session id
  1439. * @param int status
  1440. */
  1441. public function set_session_status($session_id, $status) {
  1442. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1443. $params['visibility'] = $status;
  1444. Database::update($t, $params, array('id = ?'=>$session_id));
  1445. }
  1446. /**
  1447. * Copies a session with the same data to a new session.
  1448. * The new copy is not assigned to the same promotion. @see suscribe_sessions_to_promotions() for that
  1449. * @param int Session ID
  1450. * @param bool Whether to copy the relationship with courses
  1451. * @param bool Whether to copy the relationship with users
  1452. * @param bool New courses will be created
  1453. * @return int The new session ID on success, 0 otherwise
  1454. * @todo make sure the extra session fields are copied too
  1455. */
  1456. /**
  1457. * @param $id
  1458. * @param $copy_courses
  1459. * @param $copy_users
  1460. * @param $create_new_courses
  1461. * @param $set_exercises_lp_invisible
  1462. * @return unknown_type
  1463. */
  1464. public function copy_session($id, $copy_courses = true, $copy_users = true, $create_new_courses = false, $set_exercises_lp_invisible = false) {
  1465. $id = intval($id);
  1466. $s = self::fetch($id);
  1467. $s['year_start'] = substr($s['date_start'],0,4);
  1468. $s['month_start'] = substr($s['date_start'],5,2);
  1469. $s['day_start'] = substr($s['date_start'],8,2);
  1470. $s['year_end'] = substr($s['date_end'],0,4);
  1471. $s['month_end'] = substr($s['date_end'],5,2);
  1472. $s['day_end'] = substr($s['date_end'],8,2);
  1473. $consider_start = true;
  1474. if ($s['year_start'].'-'.$s['month_start'].'-'.$s['day_start'] == '0000-00-00') {
  1475. $consider_start = false;
  1476. }
  1477. $consider_end = true;
  1478. if ($s['year_end'].'-'.$s['month_end'].'-'.$s['day_end'] == '0000-00-00') {
  1479. $consider_end = false;
  1480. }
  1481. $sid = self::create_session($s['name'].' '.get_lang('Copy'),
  1482. $s['year_start'], $s['month_start'], $s['day_start'],
  1483. $s['year_end'],$s['month_end'],$s['day_end'],
  1484. $s['nb_days_acess_before_beginning'],$s['nb_days_acess_after_end'],
  1485. false,(int)$s['id_coach'], $s['session_category_id'],
  1486. (int)$s['visibility'],$consider_start, $consider_end, true);
  1487. if (!is_numeric($sid) || empty($sid)) {
  1488. return false;
  1489. }
  1490. if ($copy_courses) {
  1491. // Register courses from the original session to the new session
  1492. $courses = self::get_course_list_by_session_id($id);
  1493. $short_courses = $new_short_courses = array();
  1494. if (is_array($courses) && count($courses)>0) {
  1495. foreach ($courses as $course) {
  1496. $short_courses[] = $course;
  1497. }
  1498. }
  1499. $courses = null;
  1500. //We will copy the current courses of the session to new courses
  1501. if (!empty($short_courses)) {
  1502. if ($create_new_courses) {
  1503. //Just in case
  1504. if (function_exists('ini_set')) {
  1505. ini_set('memory_limit','256M');
  1506. ini_set('max_execution_time',0);
  1507. }
  1508. $params = array();
  1509. $params['skip_lp_dates'] = true;
  1510. foreach ($short_courses as $course_data) {
  1511. $course_info = CourseManager::copy_course_simple($course_data['title'].' '.get_lang('Copy'), $course_data['course_code'], $id, $sid, $params);
  1512. if ($course_info) {
  1513. //By default new elements are invisible
  1514. if ($set_exercises_lp_invisible) {
  1515. require_once api_get_path(SYS_CODE_PATH).'newscorm/learnpathList.class.php';
  1516. $list = new LearnpathList('', $course_info['code'], $sid);
  1517. $flat_list = $list->get_flat_list();
  1518. if (!empty($flat_list)) {
  1519. foreach($flat_list as $lp_id => $data) {
  1520. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0, $sid);
  1521. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0);
  1522. }
  1523. }
  1524. $quiz_table = Database::get_course_table(TABLE_QUIZ_TEST);
  1525. $course_id = $course_info['real_id'];
  1526. //@todo check this query
  1527. $sql = "UPDATE $quiz_table SET active = 0 WHERE c_id = $course_id ";
  1528. $result=Database::query($sql);
  1529. }
  1530. $new_short_courses[] = $course_info['code'];
  1531. }
  1532. }
  1533. } else {
  1534. foreach($short_courses as $course_data) {
  1535. $new_short_courses[] = $course_data['code'];
  1536. }
  1537. }
  1538. $short_courses = $new_short_courses;
  1539. $res = self::add_courses_to_session($sid, $short_courses, true);
  1540. $short_courses = null;
  1541. }
  1542. }
  1543. if ($copy_users) {
  1544. // Register users from the original session to the new session
  1545. $users = self::get_users_by_session($id);
  1546. $short_users = array();
  1547. if (is_array($users) && count($users)>0) {
  1548. foreach ($users as $user) {
  1549. $short_users[] = $user['user_id'];
  1550. }
  1551. }
  1552. $users = null;
  1553. //Subscribing in read only mode
  1554. $res = self::suscribe_users_to_session($sid, $short_users, SESSION_VISIBLE_READ_ONLY, true, false);
  1555. $short_users = null;
  1556. }
  1557. return $sid;
  1558. }
  1559. function user_is_general_coach($user_id, $session_id) {
  1560. $session_id = intval($session_id);
  1561. $user_id = intval($user_id);
  1562. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1563. $sql = "SELECT DISTINCT id
  1564. FROM $session_table
  1565. WHERE session.id_coach = '".$user_id."' AND id = '$session_id'";
  1566. $result = Database::query($sql);
  1567. if ($result && Database::num_rows($result)) {
  1568. return true;
  1569. }
  1570. return false;
  1571. }
  1572. /**
  1573. * Get the number of sessions
  1574. * @param int ID of the URL we want to filter on (optional)
  1575. * @return int Number of sessions
  1576. */
  1577. public function count_sessions($access_url_id=null) {
  1578. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1579. $access_url_rel_session_table = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1580. $sql = "SELECT count(id) FROM $session_table s";
  1581. if (!empty($access_url_id) && $access_url_id == intval($access_url_id)) {
  1582. $sql .= ", $access_url_rel_session_table u ".
  1583. " WHERE s.id = u.session_id AND u.access_url_id = $access_url_id";
  1584. }
  1585. $res = Database::query($sql);
  1586. $row = Database::fetch_row($res);
  1587. return $row[0];
  1588. }
  1589. static function protect_session_edit($id) {
  1590. api_protect_admin_script(true);
  1591. $session_info = self::fetch($id);
  1592. if (!api_is_platform_admin() && api_get_setting('allow_session_admins_to_manage_all_sessions') != 'true') {
  1593. if ($session_info['session_admin_id'] != api_get_user_id()) {
  1594. api_not_allowed(true);
  1595. }
  1596. }
  1597. }
  1598. static function get_session_by_course($course_code) {
  1599. $table_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1600. $table_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1601. $course_code = Database::escape_string($course_code);
  1602. $sql = "SELECT name, s.id FROM $table_session_course sc INNER JOIN $table_session s ON (sc.id_session = s.id)
  1603. WHERE sc.course_code = '$course_code' ";
  1604. $result = Database::query($sql);
  1605. return Database::store_result($result);
  1606. }
  1607. }