sessionmanager.lib.php 64 KB

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