course_request.lib.php 26 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * Course request manager
  5. * @package chamilo.library
  6. *
  7. * @author José Manuel Abuin Mosquera <chema@cesga.es>, 2010
  8. * @author Bruno Rubio Gayo <brubio@cesga.es>, 2010
  9. * Centro de Supercomputacion de Galicia (CESGA)
  10. *
  11. * @author Ivan Tcholakov <ivantcholakov@gmail.com> (technical adaptation for Chamilo 1.8.8), 2010
  12. */
  13. /**
  14. * Code
  15. */
  16. define(COURSE_REQUEST_PENDING, 0);
  17. define(COURSE_REQUEST_ACCEPTED, 1);
  18. define(COURSE_REQUEST_REJECTED, 2);
  19. /**
  20. * Course request manager
  21. * @package chamilo.library
  22. */
  23. class CourseRequestManager {
  24. /**
  25. * Checks whether a given course code has been already occupied.
  26. * @param string $wanted_course_code The code to be checked.
  27. * @return string
  28. * Returns TRUE if there is created:
  29. * - a course with the same code OR visual_code (visualcode).
  30. * - a course request with the same code as the given one, or
  31. * Othewise returns FALSE.
  32. */
  33. public static function course_code_exists($wanted_course_code) {
  34. if ($code_exists = CourseManager::course_code_exists($wanted_course_code)) {
  35. return $code_exists;
  36. }
  37. $table_course_request = Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST);
  38. $wanted_course_code = Database::escape_string($wanted_course_code);
  39. $sql = sprintf('SELECT COUNT(id) AS number FROM %s WHERE visual_code = "%s"', $table_course_request, $wanted_course_code);
  40. $result = Database::fetch_array(Database::query($sql));
  41. return $result['number'] > 0;
  42. }
  43. /**
  44. * Creates a new course request within the database.
  45. * @param string $wanted_code The code for the created in the future course.
  46. * @param string $title
  47. * @param string $description
  48. * @param string $category_code
  49. * @param string $course_language
  50. * @param string $objetives
  51. * @param string $target_audience
  52. * @param int/string $user_id
  53. * @return int/bool The database id of the newly created course request or FALSE on failure.
  54. */
  55. public static function create_course_request($wanted_code, $title, $description, $category_code, $course_language, $objetives, $target_audience, $user_id, $exemplary_content) {
  56. global $_configuration;
  57. $wanted_code = trim($wanted_code);
  58. $user_id = (int)$user_id;
  59. $exemplary_content = (bool)$exemplary_content ? 1 : 0;
  60. if ($wanted_code == '') {
  61. return false;
  62. }
  63. if (self::course_code_exists($wanted_code)) {
  64. return false;
  65. }
  66. if ($user_id <= 0) {
  67. return false;
  68. }
  69. $user_info = api_get_user_info($user_id);
  70. if (!is_array($user_info)) {
  71. return false;
  72. }
  73. $tutor_name = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $course_language);
  74. $request_date = api_get_utc_datetime();
  75. $status = COURSE_REQUEST_PENDING;
  76. $info = 0;
  77. $keys = define_course_keys($wanted_code, '');
  78. if (!count($keys)) {
  79. return false;
  80. }
  81. $visual_code = $keys['currentCourseCode'];
  82. $code = $keys['currentCourseId'];
  83. $db_name = $keys['currentCourseDbName'];
  84. $directory = $keys['currentCourseRepository'];
  85. $sql = sprintf('INSERT INTO %s (
  86. code, user_id, directory, db_name,
  87. course_language, title, description, category_code,
  88. tutor_name, visual_code, request_date,
  89. objetives, target_audience, status, info, exemplary_content)
  90. VALUES (
  91. "%s", "%s", "%s", "%s",
  92. "%s", "%s", "%s", "%s",
  93. "%s", "%s", "%s",
  94. "%s", "%s", "%s", "%s", "%s");', Database::get_main_table(TABLE_MAIN_COURSE_REQUEST),
  95. Database::escape_string($code), Database::escape_string($user_id), Database::escape_string($directory), Database::escape_string($db_name),
  96. Database::escape_string($course_language), Database::escape_string($title), Database::escape_string($description), Database::escape_string($category_code),
  97. Database::escape_string($tutor_name), Database::escape_string($visual_code), Database::escape_string($request_date),
  98. Database::escape_string($objetives), Database::escape_string($target_audience), Database::escape_string($status), Database::escape_string($info), Database::escape_string($exemplary_content));
  99. $result_sql = Database::query($sql);
  100. if (!$result_sql) {
  101. return false;
  102. }
  103. $last_insert_id = Database::get_last_insert_id();
  104. // E-mail notifications.
  105. // E-mail language: The platform language seems to be the best choice.
  106. //$email_language = $course_language;
  107. //$email_language = api_get_interface_language();
  108. $email_language = api_get_setting('platformLanguage');
  109. $email_subject = sprintf(get_lang('CourseRequestEmailSubject', null, $email_language), '['.api_get_setting('siteName').']', $code);
  110. $email_body = get_lang('CourseRequestMailOpening', null, $email_language)."\n\n";
  111. $email_body .= get_lang('CourseName', null, $email_language).': '.$title."\n";
  112. $email_body .= get_lang('Fac', null, $email_language).': '.$category_code."\n";
  113. $email_body .= get_lang('CourseCode', null, $email_language).': '.$code."\n";
  114. $email_body .= get_lang('Professor', null, $email_language).': '.api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $email_language)."\n";
  115. $email_body .= get_lang('Email', null, $email_language).': '.$user_info['mail']."\n";
  116. $email_body .= get_lang('Description', null, $email_language).': '.$description."\n";
  117. $email_body .= get_lang('Objectives', null, $email_language).': '.$objetives."\n";
  118. $email_body .= get_lang('TargetAudience', null, $email_language).': '.$target_audience."\n";
  119. $email_body .= get_lang('Ln', null, $email_language).': '.$course_language."\n";
  120. $email_body .= get_lang('FillWithExemplaryContent', null, $email_language).': '.($exemplary_content ? get_lang('Yes', null, $email_language) : get_lang('No', null, $email_language))."\n";
  121. // Sending an e-mail to the platform administrator.
  122. $email_body_admin = $email_body;
  123. $email_body_admin .= "\n".get_lang('CourseRequestPageForApproval', null, $email_language).' '.api_get_path(WEB_CODE_PATH).'admin/course_request_edit.php?id='.$last_insert_id."\n";
  124. $email_body_admin .= "\n".get_lang('CourseRequestLegalNote', null, $email_language)."\n";
  125. $sender_name_teacher = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
  126. $sender_email_teacher = $user_info['mail'];
  127. $recipient_name_admin = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
  128. $recipient_email_admin = get_setting('emailAdministrator');
  129. @api_mail($recipient_name_admin, $recipient_email_admin, $email_subject, $email_body_admin, $sender_name_teacher, $sender_email_teacher);
  130. // Sending an e-mail to the requestor.
  131. $email_body_teacher = get_lang('Dear', null, $email_language).' ';
  132. $email_body_teacher .= api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $email_language).",\n\n";
  133. $email_body_teacher .= $email_body;
  134. $email_body_teacher .= "\n".get_lang('Formula', null, $email_language)."\n";
  135. $email_body_teacher .= api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, null, $email_language)."\n";
  136. $email_body_teacher .= get_lang('Manager', null, $email_language).' '.api_get_setting('siteName')."\n";
  137. $email_body_teacher .= get_lang('Phone', null, $email_language).': '.api_get_setting('administratorTelephone')."\n";
  138. $email_body_teacher .= get_lang('Email', null, $email_language).': '.api_get_setting('emailAdministrator', null, $email_language)."\n";
  139. $email_body_teacher .= "\n".get_lang('CourseRequestLegalNote', null, $email_language)."\n";
  140. // Swap the sender and the recipient.
  141. $sender_name_admin = $recipient_name_admin;
  142. $sender_email_admin = $recipient_email_admin;
  143. $recipient_name_teacher = $sender_name_teacher;
  144. $recipient_email_teacher = $sender_email_teacher;
  145. @api_mail($recipient_name_teacher, $recipient_email_teacher, $email_subject, $email_body_teacher, $sender_name_admin, $sender_email_admin);
  146. return $last_insert_id;
  147. }
  148. /**
  149. * Updates a given course request in the database.
  150. * @param int/string $id The id (an integer number) of the corresponding database record.
  151. * @param string $wanted_code The code for the created in the future course.
  152. * @param string $title
  153. * @param string $description
  154. * @param string $category_code
  155. * @param string $course_language
  156. * @param string $objetives
  157. * @param string $target_audience
  158. * @param int/string $user_id
  159. * @return bool Returns TRUE on success or FALSE on failure.
  160. */
  161. public static function update_course_request($id, $wanted_code, $title, $description, $category_code, $course_language, $objetives, $target_audience, $user_id, $exemplary_content) {
  162. global $_configuration;
  163. $id = (int)$id;
  164. $wanted_code = trim($wanted_code);
  165. $user_id = (int)$user_id;
  166. $exemplary_content = (bool)$exemplary_content ? 1 : 0;
  167. if ($wanted_code == '') {
  168. return false;
  169. }
  170. if ($user_id <= 0) {
  171. return false;
  172. }
  173. // Retrieve request's data
  174. $course_request_info = self::get_course_request_info($id);
  175. if (!is_array($course_request_info)) {
  176. return false;
  177. }
  178. $code = $wanted_code;
  179. $tutor_name = $course_request_info['tutor_name'];
  180. $directory = $course_request_info['directory'];
  181. $db_name = $course_request_info['db_name'];
  182. $visual_code = $course_request_info['visual_code'];
  183. $request_date = $course_request_info['request_date'];
  184. $status = $course_request_info['status'];
  185. $info = $course_request_info['info'];
  186. if ($wanted_code != $course_request_info['code']) {
  187. if (self::course_code_exists($wanted_code)) {
  188. return false;
  189. }
  190. $keys = define_course_keys($wanted_code, '');
  191. if (count($keys)) {
  192. $visual_code = $keys['currentCourseCode'];
  193. $code = $keys['currentCourseId'];
  194. $db_name = $keys['currentCourseDbName'];
  195. $directory = $keys['currentCourseRepository'];
  196. } else {
  197. return false;
  198. }
  199. }
  200. if ($user_id != $course_request_info['code']) {
  201. $user_info = api_get_user_info($user_id);
  202. if (is_array($user_info)) {
  203. $tutor_name = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $course_language);
  204. } else {
  205. $user_id = $course_request_info['code'];
  206. }
  207. }
  208. if ($course_language != $course_request_info['course_language']) {
  209. $user_info = api_get_user_info($user_id);
  210. if (is_array($user_info)) {
  211. $tutor_name = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $course_language);
  212. }
  213. }
  214. $sql = sprintf('UPDATE %s SET
  215. code = "%s", user_id = "%s", directory = "%s", db_name = "%s",
  216. course_language = "%s", title = "%s", description = "%s", category_code = "%s",
  217. tutor_name = "%s", visual_code = "%s", request_date = "%s",
  218. objetives = "%s", target_audience = "%s", status = "%s", info = "%s", exemplary_content = "%s"
  219. WHERE id = '.$id, Database::get_main_table(TABLE_MAIN_COURSE_REQUEST),
  220. Database::escape_string($code), Database::escape_string($user_id), Database::escape_string($directory), Database::escape_string($db_name),
  221. Database::escape_string($course_language), Database::escape_string($title), Database::escape_string($description), Database::escape_string($category_code),
  222. Database::escape_string($tutor_name), Database::escape_string($visual_code), Database::escape_string($request_date),
  223. Database::escape_string($objetives), Database::escape_string($target_audience), Database::escape_string($status), Database::escape_string($info), Database::escape_string($exemplary_content));
  224. $result_sql = Database::query($sql);
  225. return $result_sql !== false;
  226. }
  227. /**
  228. * Deletes a given course request.
  229. * @param int/string $id The id (an integer number) of the corresponding database record.
  230. * @return bool Returns TRUE on success or FALSE on failure.
  231. */
  232. public static function delete_course_request($id) {
  233. $id = (int)$id;
  234. $sql = "DELETE FROM ".Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST)." WHERE id = ".$id;
  235. $result = Database::query($sql);
  236. return $result !== false;
  237. }
  238. public static function count_course_requests($status = null) {
  239. $course_table = Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST);
  240. if (is_null($status)) {
  241. $sql = "SELECT COUNT(id) AS number FROM ".$course_table;
  242. } else {
  243. $status = (int)$status;
  244. $sql = "SELECT COUNT(id) AS number FROM ".$course_table." WHERE status = ".$status;
  245. }
  246. $result = Database::fetch_array(Database::query($sql));
  247. if (is_array($result)) {
  248. return $result['number'];
  249. }
  250. return false;
  251. }
  252. /**
  253. * Gets all the information about a course request using its database id as an access key.
  254. * @param int/string $id The id (an integer number) of the corresponding database record.
  255. * @return array/bool Returns the requested data as an array or FALSE on failure.
  256. */
  257. public static function get_course_request_info($id) {
  258. $id = (int)$id;
  259. $sql = "SELECT * FROM ".Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST)." WHERE id = ".$id;
  260. $result = Database::query($sql);
  261. if (Database::num_rows($result) > 0) {
  262. return Database::fetch_array($result);
  263. }
  264. return false;
  265. }
  266. /**
  267. * Gets the code of a given course request using its database id as an access key.
  268. * @param int/string $id The id (an integer number) of the corresponding database record.
  269. * @return string/bool Returns the requested requested code or FALSE on failure.
  270. */
  271. public static function get_course_request_code($id) {
  272. $id = (int)$id;
  273. $sql = "SELECT code FROM ".Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST)." WHERE id = ".$id;
  274. $result = Database::query($sql);
  275. if (Database::num_rows($result) > 0) {
  276. $result_array = Database::fetch_array($result, 'NUM');
  277. if (is_array($result_array)) {
  278. return $result_array[0];
  279. }
  280. }
  281. return false;
  282. }
  283. /**
  284. * Accepts a given by its id course request. The requested course gets created immediately after the request acceptance.
  285. * @param int/string $id The id (an integer number) of the corresponding database record.
  286. * @return string/bool Returns the code of the newly created course or FALSE on failure.
  287. */
  288. public static function accept_course_request($id) {
  289. global $_configuration;
  290. $id = (int)$id;
  291. // Retrieve request's data
  292. $course_request_info = self::get_course_request_info($id);
  293. if (!is_array($course_request_info)) {
  294. return false;
  295. }
  296. // Make all the checks again before the new course creation.
  297. if (CourseManager::course_code_exists($wanted_code)) {
  298. return false;
  299. }
  300. $user_id = (int)$course_request_info['user_id'];
  301. if ($user_id <= 0) {
  302. return false;
  303. }
  304. $user_info = api_get_user_info($user_id);
  305. if (!is_array($user_info)) {
  306. return false;
  307. }
  308. // Create the requested course
  309. $params = array();
  310. $params['title'] = $course_request_info['title'];
  311. $params['category_code'] = $course_request_info['category_code'];
  312. $params['course_language'] = $course_request_info['course_language'];
  313. $params['exemplary_content'] = intval($course_request_info['exemplary_content']) > 0;
  314. $params['wanted_code'] = $course_request_info['code'];
  315. $params['user_id'] = $course_request_info['user_id'];
  316. $params['tutor_name'] = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $course_language);
  317. $course_info = CourseManager::create_course($params);
  318. if (!empty($course_info)) {
  319. // Mark the request as accepted.
  320. $sql = "UPDATE ".Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST)." SET status = ".COURSE_REQUEST_ACCEPTED." WHERE id = ".$id;
  321. Database::query($sql);
  322. // E-mail notification.
  323. // E-mail language: The platform language seems to be the best choice
  324. $email_language = api_get_setting('platformLanguage');
  325. $email_subject = sprintf(get_lang('CourseRequestAcceptedEmailSubject', null, $email_language), '['.api_get_setting('siteName').']', $course_info['code']);
  326. $email_body = get_lang('Dear', null, $email_language).' ';
  327. $email_body .= api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $email_language).",\n\n";
  328. $email_body .= sprintf(get_lang('CourseRequestAcceptedEmailText', null, $email_language), $wanted_code, $course_info['code'], api_get_path(WEB_COURSE_PATH).$course_info['directory'].'/')."\n";
  329. $email_body .= "\n".get_lang('Formula', null, $email_language)."\n";
  330. $email_body .= api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, null, $email_language)."\n";
  331. $email_body .= get_lang('Manager', null, $email_language).' '.api_get_setting('siteName')."\n";
  332. $email_body .= get_lang('Phone', null, $email_language).': '.api_get_setting('administratorTelephone')."\n";
  333. $email_body .= get_lang('Email', null, $email_language).': '.api_get_setting('emailAdministrator', null, $email_language)."\n";
  334. $email_body .= "\n".get_lang('CourseRequestLegalNote', null, $email_language)."\n";
  335. $sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
  336. $sender_email = get_setting('emailAdministrator');
  337. $recipient_name = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
  338. $recipient_email = $user_info['mail'];
  339. $extra_headers = 'Bcc: '.$sender_email;
  340. @api_mail($recipient_name, $recipient_email, $email_subject, $email_body, $sender_name, $sender_email);
  341. return $course_info['code'];
  342. }
  343. return false;
  344. }
  345. /**
  346. * Rejects a given course request.
  347. * @param int/string $id The id (an integer number) of the corresponding database record.
  348. * @return bool Returns TRUE on success or FALSE on failure.
  349. */
  350. public static function reject_course_request($id) {
  351. $id = (int)$id;
  352. // Retrieve request's data
  353. $course_request_info = self::get_course_request_info($id);
  354. if (!is_array($course_request_info)) {
  355. return false;
  356. }
  357. $user_id = intval($course_request_info['user_id']);
  358. if ($user_id <= 0) {
  359. return false;
  360. }
  361. $user_info = api_get_user_info($user_id);
  362. if (!is_array($user_info)) {
  363. return false;
  364. }
  365. $code = $course_request_info['code'];
  366. $sql = "UPDATE ".Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST)." SET status = ".COURSE_REQUEST_REJECTED." WHERE id = ".$id;
  367. if (Database::query($sql) === false) {
  368. return false;
  369. }
  370. // E-mail notification.
  371. // E-mail language: The platform language seems to be the best choice.
  372. //$email_language = $course_language;
  373. //$email_language = api_get_interface_language();
  374. $email_language = api_get_setting('platformLanguage');
  375. $email_subject = sprintf(get_lang('CourseRequestRejectedEmailSubject', null, $email_language), '['.api_get_setting('siteName').']', $code);
  376. $email_body = get_lang('Dear', null, $email_language).' ';
  377. $email_body .= api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $email_language).",\n\n";
  378. $email_body .= sprintf(get_lang('CourseRequestRejectedEmailText', null, $email_language), $code)."\n";
  379. $email_body .= "\n".get_lang('Formula', null, $email_language)."\n";
  380. $email_body .= api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, null, $email_language)."\n";
  381. $email_body .= get_lang('Manager', null, $email_language).' '.api_get_setting('siteName')."\n";
  382. $email_body .= get_lang('Phone', null, $email_language).': '.api_get_setting('administratorTelephone')."\n";
  383. $email_body .= get_lang('Email', null, $email_language).': '.api_get_setting('emailAdministrator', null, $email_language)."\n";
  384. $email_body .= "\n".get_lang('CourseRequestLegalNote', null, $email_language)."\n";
  385. $sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
  386. $sender_email = get_setting('emailAdministrator');
  387. $recipient_name = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
  388. $recipient_email = $user_info['mail'];
  389. $extra_headers = 'Bcc: '.$sender_email;
  390. @api_mail($recipient_name, $recipient_email, $email_subject, $email_body, $sender_name, $sender_email);
  391. return true;
  392. }
  393. /**
  394. * Asks the author (through e-mail) for additional information about the given course request.
  395. * @param int/string $id The database primary id of the given request.
  396. * @return bool Returns TRUE on success or FALSE on failure.
  397. */
  398. public static function ask_for_additional_info($id) {
  399. $id = (int)$id;
  400. // Retrieve request's data
  401. $course_request_info = self::get_course_request_info($id);
  402. if (!is_array($course_request_info)) {
  403. return false;
  404. }
  405. $user_id = intval($course_request_info['user_id']);
  406. if ($user_id <= 0) {
  407. return false;
  408. }
  409. $user_info = api_get_user_info($user_id);
  410. if (!is_array($user_info)) {
  411. return false;
  412. }
  413. $code = $course_request_info['code'];
  414. $info = intval($course_request_info['info']);
  415. // Error is to be returned on a repeated attempt for asking additional information.
  416. if (!empty($info)) {
  417. return false;
  418. }
  419. // E-mail notification.
  420. // E-mail language: The platform language seems to be the best choice.
  421. //$email_language = $course_language;
  422. //$email_language = api_get_interface_language();
  423. $email_language = api_get_setting('platformLanguage');
  424. $email_subject = sprintf(get_lang('CourseRequestAskInfoEmailSubject', null, $email_language), '['.api_get_setting('siteName').']', $code);
  425. $email_body = get_lang('Dear', null, $email_language).' ';
  426. $email_body .= api_get_person_name($user_info['firstname'], $user_info['lastname'], null, null, $email_language).",\n\n";
  427. $email_body .= sprintf(get_lang('CourseRequestAskInfoEmailText', null, $email_language), $code)."\n";
  428. $email_body .= "\n".get_lang('Formula', null, $email_language)."\n";
  429. $email_body .= api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, null, $email_language)."\n";
  430. $email_body .= get_lang('Manager', null, $email_language).' '.api_get_setting('siteName')."\n";
  431. $email_body .= get_lang('Phone', null, $email_language).': '.api_get_setting('administratorTelephone')."\n";
  432. $email_body .= get_lang('Email', null, $email_language).': '.api_get_setting('emailAdministrator', null, $email_language)."\n";
  433. $email_body .= "\n".get_lang('CourseRequestLegalNote', null, $email_language)."\n";
  434. $sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
  435. $sender_email = get_setting('emailAdministrator');
  436. $recipient_name = api_get_person_name($user_info['firstname'], $user_info['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
  437. $recipient_email = $user_info['mail'];
  438. $extra_headers = 'Bcc: '.$sender_email;
  439. $result = @api_mail($recipient_name, $recipient_email, $email_subject, $email_body, $sender_name, $sender_email);
  440. if (!$result) {
  441. return false;
  442. }
  443. // Marking the fact that additional information about the request has been asked.
  444. $sql = "UPDATE ".Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST)." SET info = 1 WHERE id = ".$id;
  445. $result = Database::query($sql) !== false;
  446. return $result;
  447. }
  448. /**
  449. * Checks whether additional information about the given course request has been asked.
  450. * @param int/string $id The database primary id of the given request.
  451. * @return bool Returns TRUE if additional information has been asked or FALSE otherwise.
  452. */
  453. public static function additional_info_asked($id) {
  454. $id = (int)$id;
  455. $sql = "SELECT id FROM ".Database :: get_main_table(TABLE_MAIN_COURSE_REQUEST)." WHERE (id = ".$id." AND info > 0)";
  456. $result = Database::num_rows(Database::query($sql));
  457. return !empty($result);
  458. }
  459. }