auth.lib.php 34 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * This file contains a class used like library provides functions for auth tool. It's also used like model to courses_controller (MVC pattern)
  5. * @author Christian Fasanando <christian1827@gmail.com>
  6. * @package chamilo.auth
  7. */
  8. /**
  9. * Code
  10. */
  11. require_once api_get_path(LIBRARY_PATH).'tracking.lib.php';
  12. /**
  13. * Auth can be used to instanciate objects or as a library to manage courses
  14. * @package chamilo.auth
  15. */
  16. class Auth
  17. {
  18. /**
  19. * Constructor
  20. */
  21. public function __construct() {}
  22. /**
  23. * retrieves all the courses that the user has already subscribed to
  24. * @param int User id
  25. * @return array an array containing all the information of the courses of the given user
  26. */
  27. public function get_courses_of_user($user_id) {
  28. $TABLECOURS = Database::get_main_table(TABLE_MAIN_COURSE);
  29. $TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  30. $TABLE_COURSE_FIELD = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
  31. $TABLE_COURSE_FIELD_VALUE = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
  32. // get course list auto-register
  33. $sql = "SELECT course_code FROM $TABLE_COURSE_FIELD_VALUE tcfv INNER JOIN $TABLE_COURSE_FIELD tcf ON " .
  34. " tcfv.field_id = tcf.id WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 ";
  35. $special_course_result = Database::query($sql);
  36. if (Database::num_rows($special_course_result)>0) {
  37. $special_course_list = array();
  38. while ($result_row = Database::fetch_array($special_course_result)) {
  39. $special_course_list[] = '"'.$result_row['course_code'].'"';
  40. }
  41. }
  42. $without_special_courses = '';
  43. if (!empty($special_course_list)) {
  44. $without_special_courses = ' AND course.code NOT IN ('.implode(',',$special_course_list).')';
  45. }
  46. // Secondly we select the courses that are in a category (user_course_cat<>0) and sort these according to the sort of the category
  47. $user_id = intval($user_id);
  48. $sql_select_courses = "SELECT course.code k, course.visual_code vc, course.subscribe subscr, course.unsubscribe unsubscr,
  49. course.title i, course.tutor_name t, course.db_name db, course.directory dir, course_rel_user.status status,
  50. course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
  51. FROM $TABLECOURS course, $TABLECOURSUSER course_rel_user
  52. WHERE course.code = course_rel_user.course_code
  53. AND course_rel_user.relation_type<>".COURSE_RELATION_TYPE_RRHH."
  54. AND course_rel_user.user_id = '".$user_id."' $without_special_courses
  55. ORDER BY course_rel_user.sort ASC";
  56. $result = Database::query($sql_select_courses);
  57. while ($row = Database::fetch_array($result)) {
  58. //we only need the database name of the course
  59. $courses[] = array('db' => $row['db'], 'code' => $row['k'], 'visual_code' => $row['vc'], 'title' => $row['i'], 'directory' => $row['dir'], 'status' => $row['status'], 'tutor' => $row['t'], 'subscribe' => $row['subscr'], 'unsubscribe' => $row['unsubscr'], 'sort' => $row['sort'], 'user_course_category' => $row['user_course_cat']);
  60. }
  61. return $courses;
  62. }
  63. /**
  64. * retrieves the user defined course categories
  65. * @return array containing all the IDs of the user defined courses categories, sorted by the "sort" field
  66. */
  67. public function get_user_course_categories() {
  68. $user_id = api_get_user_id();
  69. $table_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
  70. $sql = "SELECT * FROM ".$table_category." WHERE user_id=$user_id ORDER BY sort ASC";
  71. $result = Database::query($sql);
  72. $output = array();
  73. while ($row = Database::fetch_array($result)) {
  74. $output[] = $row;
  75. }
  76. return $output;
  77. }
  78. /**
  79. * This function get all the courses in the particular user category;
  80. * @param int User category id
  81. * @return string: the name of the user defined course category
  82. */
  83. public function get_courses_in_category() {
  84. $user_id = api_get_user_id();
  85. // table definitions
  86. $TABLECOURS = Database::get_main_table(TABLE_MAIN_COURSE);
  87. $TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  88. $TABLE_USER_COURSE_CATEGORY = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
  89. $TABLE_COURSE_FIELD = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD);
  90. $TABLE_COURSE_FIELD_VALUE = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
  91. // get course list auto-register
  92. $sql = "SELECT course_code FROM $TABLE_COURSE_FIELD_VALUE tcfv INNER JOIN $TABLE_COURSE_FIELD tcf ON " .
  93. " tcfv.field_id = tcf.id WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 ";
  94. $special_course_result = Database::query($sql);
  95. if(Database::num_rows($special_course_result)>0) {
  96. $special_course_list = array();
  97. while ($result_row = Database::fetch_array($special_course_result)) {
  98. $special_course_list[] = '"'.$result_row['course_code'].'"';
  99. }
  100. }
  101. $without_special_courses = '';
  102. if (!empty($special_course_list)) {
  103. $without_special_courses = ' AND course.code NOT IN ('.implode(',',$special_course_list).')';
  104. }
  105. $sql_select_courses = "SELECT course.code, course.visual_code, course.subscribe subscr, course.unsubscribe unsubscr,
  106. course.title title, course.tutor_name tutor, course.db_name, course.directory, course_rel_user.status status,
  107. course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
  108. FROM $TABLECOURS course,
  109. $TABLECOURSUSER course_rel_user
  110. WHERE course.code = course_rel_user.course_code
  111. AND course_rel_user.user_id = '".$user_id."'
  112. AND course_rel_user.relation_type <> ".COURSE_RELATION_TYPE_RRHH."
  113. $without_special_courses
  114. ORDER BY course_rel_user.user_course_cat, course_rel_user.sort ASC";
  115. $result = Database::query($sql_select_courses);
  116. $number_of_courses = Database::num_rows($result);
  117. $data = array();
  118. while ($course = Database::fetch_array($result)) {
  119. $data[$course['user_course_cat']][] = $course;
  120. }
  121. return $data;
  122. }
  123. /**
  124. * stores the changes in a course category (moving a course to a different course category)
  125. * @param string Course code
  126. * @param int Category id
  127. * @return bool True if it success
  128. */
  129. public function store_changecoursecategory($course_code, $newcategory) {
  130. $course_code = Database::escape_string($course_code);
  131. $newcategory = intval($newcategory);
  132. $current_user = api_get_user_id();
  133. $result = false;
  134. $TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  135. $max_sort_value = api_max_sort_value($newcategory, $current_user); // max_sort_value($newcategory);
  136. Database::query("UPDATE $TABLECOURSUSER SET user_course_cat='".$newcategory."', sort='".($max_sort_value + 1)."' WHERE course_code='".$course_code."' AND user_id='".$current_user."' AND relation_type<>".COURSE_RELATION_TYPE_RRHH." ");
  137. if (Database::affected_rows()) { $result = true; }
  138. return $result;
  139. }
  140. /**
  141. * moves the course one place up or down
  142. * @param string Direction (up/down)
  143. * @param string Course code
  144. * @param int Category id
  145. * @return bool True if it success
  146. */
  147. public function move_course($direction, $course2move, $category) {
  148. // definition of tables
  149. $TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  150. $current_user_id = api_get_user_id();
  151. $all_user_courses = $this->get_courses_of_user($current_user_id);
  152. $result = false;
  153. // we need only the courses of the category we are moving in
  154. $user_courses = array();
  155. foreach ($all_user_courses as $key => $course) {
  156. if ($course['user_course_category'] == $category) {
  157. $user_courses[] = $course;
  158. }
  159. }
  160. foreach ($user_courses as $key => $course) {
  161. if ($course2move == $course['code']) {
  162. // source_course is the course where we clicked the up or down icon
  163. $source_course = $course;
  164. // target_course is the course before/after the source_course (depending on the up/down icon)
  165. if ($direction == 'up') {
  166. $target_course = $user_courses[$key - 1];
  167. } else {
  168. $target_course = $user_courses[$key + 1];
  169. }
  170. }
  171. }
  172. if (count($target_course) > 0 && count($source_course) > 0) {
  173. $sql_update1 = "UPDATE $TABLECOURSUSER SET sort='".$target_course['sort']."' WHERE course_code='".$source_course['code']."' AND user_id='".$current_user_id."' AND relation_type<>".COURSE_RELATION_TYPE_RRHH." ";
  174. $sql_update2 = "UPDATE $TABLECOURSUSER SET sort='".$source_course['sort']."' WHERE course_code='".$target_course['code']."' AND user_id='".$current_user_id."' AND relation_type<>".COURSE_RELATION_TYPE_RRHH." ";
  175. Database::query($sql_update2);
  176. Database::query($sql_update1);
  177. if (Database::affected_rows()) { $result = true; }
  178. }
  179. return $result;
  180. }
  181. /**
  182. * Moves the course one place up or down
  183. * @param string Direction up/down
  184. * @param string Category id
  185. * @return bool True If it success
  186. */
  187. public function move_category($direction, $category2move) {
  188. // the database definition of the table that stores the user defined course categories
  189. $table_user_defined_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
  190. $current_user_id = api_get_user_id();
  191. $user_coursecategories = $this->get_user_course_categories();
  192. $user_course_categories_info = $this->get_user_course_categories_info();
  193. $result = false;
  194. foreach ($user_coursecategories as $key => $category) {
  195. $category_id = $category['id'];
  196. if ($category2move == $category_id) {
  197. // source_course is the course where we clicked the up or down icon
  198. $source_category = $user_course_categories_info[$category2move];
  199. // target_course is the course before/after the source_course (depending on the up/down icon)
  200. if ($direction == 'up') {
  201. $target_category = $user_course_categories_info[$user_coursecategories[$key - 1]['id']];
  202. } else {
  203. $target_category = $user_course_categories_info[$user_coursecategories[$key + 1]['id']];
  204. }
  205. }
  206. }
  207. if (count($target_category) > 0 && count($source_category) > 0) {
  208. $sql_update1="UPDATE $table_user_defined_category SET sort='".Database::escape_string($target_category['sort'])."' WHERE id='".intval($source_category['id'])."' AND user_id='".$current_user_id."'";
  209. $sql_update2="UPDATE $table_user_defined_category SET sort='".Database::escape_string($source_category['sort'])."' WHERE id='".intval($target_category['id'])."' AND user_id='".$current_user_id."'";
  210. Database::query($sql_update2);
  211. Database::query($sql_update1);
  212. if (Database::affected_rows()) {
  213. $result = true;
  214. }
  215. }
  216. return $result;
  217. }
  218. /**
  219. * Retrieves the user defined course categories and all the info that goes with it
  220. * @return array containing all the info of the user defined courses categories with the id as key of the array
  221. */
  222. public function get_user_course_categories_info() {
  223. $current_user_id = api_get_user_id();
  224. $table_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
  225. $sql = "SELECT * FROM ".$table_category." WHERE user_id='".$current_user_id."' ORDER BY sort ASC";
  226. $result = Database::query($sql);
  227. while ($row = Database::fetch_array($result)) {
  228. $output[$row['id']] = $row;
  229. }
  230. return $output;
  231. }
  232. /**
  233. * Updates the user course category in the chamilo_user database
  234. * @param string Category title
  235. * @param int Category id
  236. * @return bool True if it success
  237. */
  238. public function store_edit_course_category($title, $category_id) {
  239. // protect data
  240. $title = Database::escape_string($title);
  241. $category_id = intval($category_id);
  242. $result = false;
  243. $tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
  244. $sql_update = "UPDATE $tucc SET title='".api_htmlentities($title, ENT_QUOTES, api_get_system_encoding())."' WHERE id='".$category_id."'";
  245. Database::query($sql_update);
  246. if (Database::affected_rows()) { $result = true; }
  247. return $result;
  248. }
  249. /**
  250. * deletes a course category and moves all the courses that were in this category to main category
  251. * @param int Category id
  252. * @return bool True if it success
  253. */
  254. public function delete_course_category($category_id) {
  255. $current_user_id = api_get_user_id();
  256. $tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
  257. $TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  258. $category_id = intval($category_id);
  259. $result = false;
  260. $sql_delete = "DELETE FROM $tucc WHERE id='".$category_id."' and user_id='".$current_user_id."'";
  261. Database::query($sql_delete);
  262. if (Database::affected_rows()) { $result = true; }
  263. $sql_update = "UPDATE $TABLECOURSUSER SET user_course_cat='0' WHERE user_course_cat='".$category_id."' AND user_id='".$current_user_id."' AND relation_type<>".COURSE_RELATION_TYPE_RRHH." ";
  264. Database::query($sql_update);
  265. return $result;
  266. }
  267. /**
  268. * unsubscribe the user from a given course
  269. * @param string Course code
  270. * @return bool True if it success
  271. */
  272. public function remove_user_from_course($course_code) {
  273. $tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  274. // protect variables
  275. $current_user_id = api_get_user_id();
  276. $course_code = Database::escape_string($course_code);
  277. $result = true;
  278. // we check (once again) if the user is not course administrator
  279. // because the course administrator cannot unsubscribe himself
  280. // (s)he can only delete the course
  281. $sql_check = "SELECT * FROM $tbl_course_user WHERE user_id='".$current_user_id."' AND course_code='".$course_code."' AND status='1' ";
  282. $result_check = Database::query($sql_check);
  283. $number_of_rows = Database::num_rows($result_check);
  284. if ($number_of_rows > 0) {
  285. $result = false;
  286. }
  287. CourseManager::unsubscribe_user($current_user_id, $course_code);
  288. return $result;
  289. }
  290. /**
  291. * stores the user course category in the chamilo_user database
  292. * @param string Category title
  293. * @return bool True if it success
  294. */
  295. public function store_course_category($category_title) {
  296. $tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
  297. // protect data
  298. $current_user_id = api_get_user_id();
  299. $category_title = Database::escape_string($category_title);
  300. $result = false;
  301. // step 1: we determine the max value of the user defined course categories
  302. $sql = "SELECT sort FROM $tucc WHERE user_id='".$current_user_id."' ORDER BY sort DESC";
  303. $rs_sort = Database::query($sql);
  304. $maxsort = Database::fetch_array($rs_sort);
  305. $nextsort = $maxsort['sort'] + 1;
  306. // step 2: we check if there is already a category with this name, if not we store it, else we give an error.
  307. $sql = "SELECT * FROM $tucc WHERE user_id='".$current_user_id."' AND title='".$category_title."'ORDER BY sort DESC";
  308. $rs = Database::query($sql);
  309. if (Database::num_rows($rs) == 0) {
  310. $sql_insert = "INSERT INTO $tucc (user_id, title,sort) VALUES ('".$current_user_id."', '".api_htmlentities($category_title, ENT_QUOTES, api_get_system_encoding())."', '".$nextsort."')";
  311. Database::query($sql_insert);
  312. if (Database::affected_rows()) { $result = true; }
  313. } else {
  314. $result = false;
  315. }
  316. return $result;
  317. }
  318. /**
  319. * Counts the number of courses in a given course category
  320. * @param string Category code
  321. * @return int Count of courses
  322. */
  323. public function count_courses_in_category($category_code) {
  324. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  325. $TABLE_COURSE_FIELD = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD);
  326. $TABLE_COURSE_FIELD_VALUE = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
  327. // get course list auto-register
  328. $sql = "SELECT course_code FROM $TABLE_COURSE_FIELD_VALUE tcfv INNER JOIN $TABLE_COURSE_FIELD tcf ON " .
  329. " tcfv.field_id = tcf.id WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 ";
  330. $special_course_result = Database::query($sql);
  331. if(Database::num_rows($special_course_result)>0) {
  332. $special_course_list = array();
  333. while ($result_row = Database::fetch_array($special_course_result)) {
  334. $special_course_list[] = '"'.$result_row['course_code'].'"';
  335. }
  336. }
  337. $without_special_courses = '';
  338. if (!empty($special_course_list)) {
  339. $without_special_courses = ' AND course.code NOT IN ('.implode(',',$special_course_list).')';
  340. }
  341. $sql = "SELECT * FROM $tbl_course WHERE category_code".(empty($category_code) ? " IS NULL" : "='".$category_code."'").$without_special_courses;
  342. // Showing only the courses of the current Dokeos access_url_id.
  343. global $_configuration;
  344. if ($_configuration['multiple_access_urls']) {
  345. $url_access_id = api_get_current_access_url_id();
  346. if ($url_access_id != -1) {
  347. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  348. $sql = "SELECT * FROM $tbl_course as course INNER JOIN $tbl_url_rel_course as url_rel_course
  349. ON (url_rel_course.course_code=course.code)
  350. WHERE access_url_id = $url_access_id AND category_code".(empty($category_code) ? " IS NULL" : "='".$category_code."'").$without_special_courses;
  351. }
  352. }
  353. return Database::num_rows(Database::query($sql));
  354. }
  355. /**
  356. * get the browsing of the course categories (faculties)
  357. * @return array array containing a list with all the categories and subcategories(if needed)
  358. */
  359. public function browse_course_categories() {
  360. $tbl_courses_nodes = Database::get_main_table(TABLE_MAIN_CATEGORY);
  361. $sql = "SELECT * FROM $tbl_courses_nodes ORDER BY tree_pos ASC";
  362. $result = Database::query($sql);
  363. $categories = array();
  364. while ($row = Database::fetch_array($result)) {
  365. $count_courses = $this->count_courses_in_category($row['code']);
  366. $row['count_courses'] = $count_courses;
  367. if (!isset($row['parent_id'])) {
  368. $categories[0][$row['tree_pos']] = $row;
  369. } else {
  370. $categories[$row['parent_id']][$row['tree_pos']] = $row;
  371. }
  372. }
  373. return $categories;
  374. }
  375. /**
  376. * Display all the courses in the given course category. I could have used a parameter here
  377. * @param string Category code
  378. * @return array Courses data
  379. */
  380. public function browse_courses_in_category($category_code, $random_value = null) {
  381. global $_configuration;
  382. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  383. $TABLE_COURSE_FIELD = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
  384. $TABLE_COURSE_FIELD_VALUE = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
  385. // get course list auto-register
  386. $sql = "SELECT course_code FROM $TABLE_COURSE_FIELD_VALUE tcfv INNER JOIN $TABLE_COURSE_FIELD tcf ON tcfv.field_id = tcf.id
  387. WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 ";
  388. $special_course_result = Database::query($sql);
  389. if (Database::num_rows($special_course_result)>0) {
  390. $special_course_list = array();
  391. while ($result_row = Database::fetch_array($special_course_result)) {
  392. $special_course_list[] = '"'.$result_row['course_code'].'"';
  393. }
  394. }
  395. $without_special_courses = '';
  396. if (!empty($special_course_list)) {
  397. $without_special_courses = ' AND course.code NOT IN ('.implode(',',$special_course_list).')';
  398. }
  399. if (!empty($random_value)) {
  400. $random_value = intval($random_value);
  401. $sql = "SELECT * FROM $tbl_course WHERE 1 $without_special_courses ORDER BY RAND() LIMIT $random_value";
  402. if ($_configuration['multiple_access_urls']) {
  403. $url_access_id = api_get_current_access_url_id();
  404. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  405. $sql = "SELECT * FROM $tbl_course as course INNER JOIN $tbl_url_rel_course as url_rel_course
  406. ON (url_rel_course.course_code=course.code)
  407. WHERE access_url_id = $url_access_id $without_special_courses ORDER BY RAND() LIMIT $random_value";
  408. }
  409. $sql = "SELECT * FROM $tbl_course course, (SELECT CEIL(MAX($tbl_course.id) * RAND()) AS randId FROM $tbl_course) AS someRandId
  410. WHERE course.id >= someRandId.randId $without_special_courses";
  411. } else {
  412. $category_code = Database::escape_string($category_code);
  413. //$my_category = (empty($category) ? " IS NULL" : "='".$category."'");
  414. $sql = "SELECT * FROM $tbl_course WHERE category_code='$category_code' $without_special_courses ORDER BY title ";
  415. //showing only the courses of the current Chamilo access_url_id
  416. if ($_configuration['multiple_access_urls']) {
  417. $url_access_id = api_get_current_access_url_id();
  418. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  419. $sql = "SELECT * FROM $tbl_course as course INNER JOIN $tbl_url_rel_course as url_rel_course
  420. ON (url_rel_course.course_code=course.code)
  421. WHERE access_url_id = $url_access_id AND category_code='$category_code' $without_special_courses ORDER BY title";
  422. }
  423. }
  424. $result = Database::query($sql);
  425. $courses = array();
  426. while ($row = Database::fetch_array($result)) {
  427. $row['registration_code'] = !empty($row['registration_code']);
  428. $count_users = CourseManager::get_users_count_in_course($row['code']);
  429. $count_connections_last_month = Tracking::get_course_connections_count($row['code'], 0, api_get_utc_datetime(time()-(30*86400)));
  430. if ($row['tutor_name'] == '0') {
  431. $row['tutor_name'] = get_lang('NoManager');
  432. }
  433. $courses[] = array(
  434. 'code' => $row['code'],
  435. 'directory' => $row['directory'],
  436. 'db' => $row['db_name'],
  437. 'visual_code' => $row['visual_code'],
  438. 'title' => $row['title'],
  439. 'tutor' => $row['tutor_name'],
  440. 'subscribe' => $row['subscribe'],
  441. 'unsubscribe' => $row['unsubscribe'],
  442. 'registration_code' => $row['registration_code'],
  443. 'creation_date' => $row['creation_date'],
  444. 'count_users' => $count_users,
  445. 'count_connections' => $count_connections_last_month
  446. );
  447. }
  448. return $courses;
  449. }
  450. /**
  451. * Search the courses database for a course that matches the search term.
  452. * The search is done on the code, title and tutor field of the course table.
  453. * @param string $search_term: the string that the user submitted, what we are looking for
  454. * @return array an array containing a list of all the courses (the code, directory, dabase, visual_code, title, ... ) matching the the search term.
  455. */
  456. public function search_courses($search_term) {
  457. $TABLECOURS = Database::get_main_table(TABLE_MAIN_COURSE);
  458. $TABLE_COURSE_FIELD = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD);
  459. $TABLE_COURSE_FIELD_VALUE = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
  460. // get course list auto-register
  461. $sql = "SELECT course_code FROM $TABLE_COURSE_FIELD_VALUE tcfv INNER JOIN $TABLE_COURSE_FIELD tcf ON " .
  462. " tcfv.field_id = tcf.id WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 ";
  463. $special_course_result = Database::query($sql);
  464. if(Database::num_rows($special_course_result)>0) {
  465. $special_course_list = array();
  466. while ($result_row = Database::fetch_array($special_course_result)) {
  467. $special_course_list[] = '"'.$result_row['course_code'].'"';
  468. }
  469. }
  470. $without_special_courses = '';
  471. if (!empty($special_course_list)) {
  472. $without_special_courses = ' AND course.code NOT IN ('.implode(',',$special_course_list).')';
  473. }
  474. $search_term_safe = Database::escape_string($search_term);
  475. $sql_find = "SELECT * FROM $TABLECOURS WHERE (code LIKE '%".$search_term_safe."%' OR title LIKE '%".$search_term_safe."%' OR tutor_name LIKE '%".$search_term_safe."%') $without_special_courses ORDER BY title, visual_code ASC";
  476. global $_configuration;
  477. if ($_configuration['multiple_access_urls']) {
  478. $url_access_id = api_get_current_access_url_id();
  479. if ($url_access_id != -1) {
  480. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  481. $sql_find = "SELECT * FROM $TABLECOURS as course INNER JOIN $tbl_url_rel_course as url_rel_course
  482. ON (url_rel_course.course_code=course.code)
  483. WHERE access_url_id = $url_access_id AND (code LIKE '%".$search_term_safe."%' OR title LIKE '%".$search_term_safe."%' OR tutor_name LIKE '%".$search_term_safe."%' ) $without_special_courses ORDER BY title, visual_code ASC ";
  484. }
  485. }
  486. $result_find = Database::query($sql_find);
  487. while ($row = Database::fetch_array($result_find)) {
  488. $row['registration_code'] = !empty($row['registration_code']);
  489. $count_users = count(CourseManager::get_user_list_from_course_code($row['code']));
  490. $count_connections_last_month = Tracking::get_course_connections_count($row['code'], 0, api_get_utc_datetime(time()-(30*86400)));
  491. $courses[] = array(
  492. 'code' => $row['code'],
  493. 'directory' => $row['directory'],
  494. 'db' => $row['db_name'],
  495. 'visual_code' => $row['visual_code'],
  496. 'title' => $row['title'],
  497. 'tutor' => $row['tutor_name'],
  498. 'subscribe' => $row['subscribe'],
  499. 'unsubscribe' => $row['unsubscribe'],
  500. 'registration_code' => $row['registration_code'],
  501. 'creation_date' => $row['creation_date'],
  502. 'count_users' => $count_users,
  503. 'count_connections' => $count_connections_last_month
  504. );
  505. // $courses[] = array('code' => $row['code'], 'directory' => $row['directory'], 'db' => $row['db_name'], 'visual_code' => $row['visual_code'], 'title' => $row['title'], 'tutor' => $row['tutor_name'], 'subscribe' => $row['subscribe'], 'unsubscribe' => $row['unsubscribe']);
  506. }
  507. return $courses;
  508. }
  509. /**
  510. * Subscribe the user to a given course
  511. * @param string Course code
  512. * @return string Message about results
  513. */
  514. public function subscribe_user($course_code) {
  515. global $_user;
  516. $all_course_information = CourseManager::get_course_information($course_code);
  517. if ($all_course_information['registration_code'] == '' || $_POST['course_registration_code'] == $all_course_information['registration_code']) {
  518. if (api_is_platform_admin()) {
  519. $status_user_in_new_course = COURSEMANAGER;
  520. } else {
  521. $status_user_in_new_course=null;
  522. }
  523. if (CourseManager::add_user_to_course($_user['user_id'], $course_code, $status_user_in_new_course)) {
  524. $send = api_get_course_setting('email_alert_to_teacher_on_new_user_in_course', $course_code);
  525. if ($send == 1) {
  526. CourseManager::email_to_tutor($_user['user_id'], $course_code, $send_to_tutor_also = false);
  527. } else if ($send == 2){
  528. CourseManager::email_to_tutor($_user['user_id'], $course_code, $send_to_tutor_also = true);
  529. }
  530. return get_lang('EnrollToCourseSuccessful');
  531. } else {
  532. return get_lang('ErrorContactPlatformAdmin');
  533. }
  534. } else {
  535. $return = '';
  536. if (isset($_POST['course_registration_code']) && $_POST['course_registration_code'] != $all_course_information['registration_code']) {
  537. return false;
  538. }
  539. $return .= get_lang('CourseRequiresPassword').'<br />';
  540. $return .= $all_course_information['visual_code'].' - '.$all_course_information['title'];
  541. $return .= "<form action=\"".api_get_path(WEB_CODE_PATH)."auth/courses.php?action=subscribe_course&sec_token=".$_SESSION['sec_token']."&subscribe_course=".$all_course_information['code']."&category_code=".$all_course_information['category_code']." \" method=\"post\">";
  542. $return .= '<input type="hidden" name="token" value="'.$_SESSION['sec_token'].'" />';
  543. //$return .= "<input type=\"hidden\" name=\"subscribe\" value=\"".$all_course_information['code']."\" />";
  544. //$return .= "<input type=\"hidden\" name=\"category_code\" value=\"".$all_course_information['category_code']."\" />";
  545. $return .= "<input type=\"text\" name=\"course_registration_code\" value=\"".$_POST['course_registration_code']."\" />";
  546. $return .= "<input type=\"submit\" name=\"submit_course_registration_code\" value=\"OK\" alt=\"".get_lang('SubmitRegistrationCode')."\" /></form>";
  547. return $return;
  548. }
  549. }
  550. }
  551. ?>