CourseRecycler.class.php 22 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. require_once 'Course.class.php';
  4. /**
  5. * Class to delete items from a Chamilo-course
  6. * @author Bart Mollet <bart.mollet@hogent.be>
  7. * @package chamilo.backup
  8. */
  9. class CourseRecycler
  10. {
  11. /**
  12. * A course-object with the items to delete
  13. */
  14. var $course;
  15. /**
  16. * Create a new CourseRecycler
  17. * @param course $course The course-object which contains the items to
  18. * delete
  19. */
  20. function CourseRecycler($course) {
  21. $this->course = $course;
  22. $this->course_info = api_get_course_info($this->course->code);
  23. $this->course_id = $course->info['real_id'];
  24. }
  25. /**
  26. * Delete all items from the course.
  27. * This deletes all items in the course-object from the current Chamilo-
  28. * course
  29. */
  30. function recycle() {
  31. $table_tool_intro = Database::get_course_table(TABLE_TOOL_INTRO);
  32. $table_linked_resources = Database::get_course_table(TABLE_LINKED_RESOURCES);
  33. $table_item_properties = Database::get_course_table(TABLE_ITEM_PROPERTY);
  34. $this->recycle_links();
  35. $this->recycle_link_categories();
  36. $this->recycle_events();
  37. $this->recycle_announcements();
  38. $this->recycle_documents();
  39. $this->recycle_forums(); //@todo does not work yet
  40. $this->recycle_forum_categories();
  41. $this->recycle_quizzes();
  42. $this->recycle_surveys();
  43. $this->recycle_learnpaths();
  44. $this->recycle_cours_description();
  45. $this->recycle_wiki();
  46. $this->recycle_glossary();
  47. $this->recycle_thematic();
  48. $this->recycle_attendance();
  49. foreach ($this->course->resources as $type => $resources) {
  50. foreach ($resources as $id => $resource) {
  51. $sql = "DELETE FROM ".$table_linked_resources." WHERE c_id = ".$this->course_id." AND (source_type = '".$type."' AND source_id = '".$id."') OR (resource_type = '".$type."' AND resource_id = '".$id."') ";
  52. Database::query($sql);
  53. if(is_numeric($id)) {
  54. $sql = "DELETE FROM ".$table_item_properties." WHERE c_id = ".$this->course_id." AND tool ='".$resource->get_tool()."' AND ref=".$id;
  55. Database::query($sql);
  56. } elseif ($type == RESOURCE_TOOL_INTRO) {
  57. $sql = "DELETE FROM $table_tool_intro WHERE c_id = ".$this->course_id." AND id='$id'";
  58. Database::query($sql);
  59. }
  60. }
  61. }
  62. }
  63. /**
  64. * Delete documents
  65. */
  66. function recycle_documents()
  67. {
  68. if ($this->course->has_resources(RESOURCE_DOCUMENT))
  69. {
  70. $table = Database :: get_course_table(TABLE_DOCUMENT);
  71. foreach ($this->course->resources[RESOURCE_DOCUMENT] as $id => $document) {
  72. rmdirr($this->course->backup_path.'/'.$document->path);
  73. }
  74. $ids = implode(',', (array_keys($this->course->resources[RESOURCE_DOCUMENT])));
  75. $sql = "DELETE FROM ".$table." WHERE id IN(".$ids.")";
  76. Database::query($sql);
  77. }
  78. }
  79. /**
  80. * Delete wiki
  81. */
  82. function recycle_wiki() {
  83. if ($this->course->has_resources(RESOURCE_WIKI)) {
  84. $table_wiki = Database::get_course_table(TABLE_WIKI);
  85. $table_wiki_conf = Database::get_course_table(TABLE_WIKI_CONF);
  86. $table_wiki_discuss = Database::get_course_table(TABLE_WIKI_DISCUSS);
  87. $table_wiki_mailcue = Database::get_course_table(TABLE_WIKI_MAILCUE);
  88. $pages = array();
  89. foreach ($this->course->resources[RESOURCE_WIKI] as $resource) {
  90. $pages[] = $resource->page_id;
  91. }
  92. $wiki_ids = implode(',', (array_keys($this->course->resources[RESOURCE_WIKI])));
  93. $page_ids = implode(',', $pages);
  94. $sql = "DELETE FROM ".$table_wiki." WHERE id IN(".$wiki_ids.")";
  95. Database::query($sql);
  96. $sql = "DELETE FROM ".$table_wiki_conf." WHERE page_id IN(".$page_ids.")";
  97. Database::query($sql);
  98. }
  99. }
  100. /**
  101. * Delete glossary
  102. */
  103. function recycle_glossary() {
  104. if ($this->course->has_resources(RESOURCE_GLOSSARY)) {
  105. $table_glossary = Database::get_course_table(TABLE_GLOSSARY);
  106. $ids = implode(',', (array_keys($this->course->resources[RESOURCE_GLOSSARY])));
  107. $sql = "DELETE FROM ".$table_glossary." WHERE glossary_id IN(".$ids.")";
  108. Database::query($sql);
  109. }
  110. }
  111. /**
  112. * Delete links
  113. */
  114. function recycle_links() {
  115. if ($this->course->has_resources(RESOURCE_LINK)) {
  116. $table = Database :: get_course_table(TABLE_LINK);
  117. $ids = implode(',', (array_keys($this->course->resources[RESOURCE_LINK])));
  118. $sql = "DELETE FROM ".$table." WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
  119. Database::query($sql);
  120. }
  121. }
  122. /**
  123. * Delete forums
  124. */
  125. function recycle_forums()
  126. {
  127. if ($this->course->has_resources(RESOURCE_FORUM)) {
  128. $table_category = Database :: get_course_table(TABLE_FORUM_CATEGORY);
  129. $table_forum = Database :: get_course_table(TABLE_FORUM);
  130. $table_thread = Database :: get_course_table(TABLE_FORUM_THREAD);
  131. $table_post = Database :: get_course_table(TABLE_FORUM_POST);
  132. $table_attachment = Database::get_course_table(TABLE_FORUM_ATTACHMENT);
  133. $table_notification = Database::get_course_table(TABLE_FORUM_NOTIFICATION);
  134. $table_mail_queue = Database::get_course_table(TABLE_FORUM_MAIL_QUEUE);
  135. $table_thread_qualify = Database::get_course_table(TABLE_FORUM_THREAD_QUALIFY);
  136. $table_thread_qualify_log = Database::get_course_table(TABLE_FORUM_THREAD_QUALIFY_LOG);
  137. $forum_ids = implode(',', (array_keys($this->course->resources[RESOURCE_FORUM])));
  138. $sql = "DELETE FROM ".$table_attachment.
  139. " USING ".$table_attachment." INNER JOIN ".$table_post.
  140. " WHERE c_id = ".$this->course_id." AND ".$table_attachment.".post_id = ".$table_post.".post_id".
  141. " AND ".$table_post.".forum_id IN(".$forum_ids.");";
  142. Database::query($sql);
  143. $sql = "DELETE FROM ".$table_mail_queue.
  144. " USING ".$table_mail_queue." INNER JOIN ".$table_post.
  145. " WHERE c_id = ".$this->course_id." AND ".$table_mail_queue.".post_id = ".$table_post.".post_id".
  146. " AND ".$table_post.".forum_id IN(".$forum_ids.");";
  147. Database::query($sql);
  148. // Just in case, deleting in the same table using thread_id as record-linker.
  149. $sql = "DELETE FROM ".$table_mail_queue.
  150. " USING ".$table_mail_queue." INNER JOIN ".$table_thread.
  151. " WHERE c_id = ".$this->course_id." AND ".$table_mail_queue.".thread_id = ".$table_thread.".thread_id".
  152. " AND ".$table_thread.".forum_id IN(".$forum_ids.");";
  153. Database::query($sql);
  154. $sql = "DELETE FROM ".$table_thread_qualify.
  155. " USING ".$table_thread_qualify." INNER JOIN ".$table_thread.
  156. " WHERE c_id = ".$this->course_id." AND ".$table_thread_qualify.".thread_id = ".$table_thread.".thread_id".
  157. " AND ".$table_thread.".forum_id IN(".$forum_ids.");";
  158. Database::query($sql);
  159. $sql = "DELETE FROM ".$table_thread_qualify_log.
  160. " USING ".$table_thread_qualify_log." INNER JOIN ".$table_thread.
  161. " WHERE c_id = ".$this->course_id." AND ".$table_thread_qualify_log.".thread_id = ".$table_thread.".thread_id".
  162. " AND ".$table_thread.".forum_id IN(".$forum_ids.");";
  163. Database::query($sql);
  164. $sql = "DELETE FROM ".$table_notification." WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
  165. Database::query($sql);
  166. $sql = "DELETE FROM ".$table_post." WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
  167. Database::query($sql);
  168. $sql = "DELETE FROM ".$table_thread." WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
  169. Database::query($sql);
  170. $sql = "DELETE FROM ".$table_forum." WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
  171. Database::query($sql);
  172. }
  173. }
  174. /**
  175. * Delete forum-categories
  176. * Deletes all forum-categories from current course without forums
  177. */
  178. function recycle_forum_categories()
  179. {
  180. $table_forum = Database :: get_course_table(TABLE_FORUM);
  181. $table_forumcat = Database :: get_course_table(TABLE_FORUM_CATEGORY);
  182. $sql = "SELECT fc.cat_id FROM ".$table_forumcat." fc LEFT JOIN ".$table_forum." f ON fc.cat_id=f.forum_category
  183. WHERE fc.c_id = ".$this->course_id." AND f.c_id = ".$this->course_id." AND f.forum_id IS NULL";
  184. $res = Database::query($sql);
  185. while ($obj = Database::fetch_object($res)) {
  186. $sql = "DELETE FROM ".$table_forumcat." WHERE c_id = ".$this->course_id." AND cat_id = ".$obj->cat_id;
  187. Database::query($sql);
  188. }
  189. }
  190. /**
  191. * Delete link-categories
  192. * Deletes all empty link-categories (=without links) from current course
  193. */
  194. function recycle_link_categories()
  195. {
  196. $link_cat_table = Database :: get_course_table(TABLE_LINK_CATEGORY);
  197. $link_table = Database :: get_course_table(TABLE_LINK);
  198. $sql = "SELECT lc.id FROM ".$link_cat_table." lc LEFT JOIN ".$link_table." l ON lc.id=l.category_id
  199. WHERE l.id IS NULL";
  200. $res = Database::query($sql);
  201. while ($obj = Database::fetch_object($res))
  202. {
  203. $sql = "DELETE FROM ".$link_cat_table." WHERE c_id = ".$this->course_id." AND id = ".$obj->id;
  204. Database::query($sql);
  205. }
  206. }
  207. /**
  208. * Delete events
  209. */
  210. function recycle_events() {
  211. if ($this->course->has_resources(RESOURCE_EVENT)) {
  212. $table = Database :: get_course_table(TABLE_AGENDA);
  213. $table_attachment = Database :: get_course_table(TABLE_AGENDA_ATTACHMENT);
  214. $ids = implode(',', (array_keys($this->course->resources[RESOURCE_EVENT])));
  215. $sql = "DELETE FROM ".$table." WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
  216. Database::query($sql);
  217. $sql = "DELETE FROM ".$table_attachment." WHERE c_id = ".$this->course_id." AND agenda_id IN(".$ids.")";
  218. Database::query($sql);
  219. }
  220. }
  221. /**
  222. * Delete announcements
  223. */
  224. function recycle_announcements() {
  225. if ($this->course->has_resources(RESOURCE_ANNOUNCEMENT)) {
  226. $table = Database :: get_course_table(TABLE_ANNOUNCEMENT);
  227. $table_attachment = Database :: get_course_table(TABLE_ANNOUNCEMENT_ATTACHMENT);
  228. $ids = implode(',', (array_keys($this->course->resources[RESOURCE_ANNOUNCEMENT])));
  229. $sql = "DELETE FROM ".$table." WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
  230. Database::query($sql);
  231. $sql = "DELETE FROM ".$table_attachment." WHERE c_id = ".$this->course_id." AND announcement_id IN(".$ids.")";
  232. Database::query($sql);
  233. }
  234. }
  235. /**
  236. * Recycle quizzes - doesn't remove the questions and their answers, as they might still be used later
  237. */
  238. function recycle_quizzes() {
  239. if ($this->course->has_resources(RESOURCE_QUIZ)) {
  240. $table_qui_que = Database :: get_course_table(TABLE_QUIZ_QUESTION);
  241. $table_qui_ans = Database :: get_course_table(TABLE_QUIZ_ANSWER);
  242. $table_qui = Database :: get_course_table(TABLE_QUIZ_TEST);
  243. $table_rel = Database :: get_course_table(TABLE_QUIZ_TEST_QUESTION);
  244. $ids = array_keys($this->course->resources[RESOURCE_QUIZ]);
  245. $delete_orphan_questions = in_array(-1, $ids);
  246. $ids = implode(',', $ids);
  247. // Deletion of the normal tests, questions in them are not deleted, they become orphan at this moment.
  248. $sql = "DELETE FROM ".$table_qui." WHERE c_id = ".$this->course_id." AND id <> -1 AND id IN(".$ids.")";
  249. Database::query($sql);
  250. $sql = "DELETE FROM ".$table_rel." WHERE c_id = ".$this->course_id." AND exercice_id <> -1 AND exercice_id IN(".$ids.")";
  251. Database::query($sql);
  252. // Identifying again and deletion of the orphan questions, if it was desired.
  253. if ($delete_orphan_questions) {
  254. $sql = 'SELECT questions.id FROM '.$table_qui_que.' as questions LEFT JOIN '.$table_rel.' as quizz_questions
  255. ON questions.id=quizz_questions.question_id LEFT JOIN '.$table_qui.' as exercices
  256. ON exercice_id=exercices.id
  257. WHERE
  258. questions.c_id = '.$this->course_id.' AND
  259. quizz_questions.c_id = '.$this->course_id.' AND
  260. exercices.c_id = '.$this->course_id.' AND
  261. quizz_questions.exercice_id IS NULL OR exercices.active = -1'; // active = -1 means "deleted" test.
  262. $db_result = Database::query($sql);
  263. if (Database::num_rows($db_result) > 0) {
  264. $orphan_ids = array();
  265. while ($obj = Database::fetch_object($db_result)) {
  266. $orphan_ids[] = $obj->id;
  267. }
  268. $orphan_ids = implode(',', $orphan_ids);
  269. $sql = "DELETE FROM ".$table_rel." WHERE c_id = ".$this->course_id." AND question_id IN(".$orphan_ids.")";
  270. Database::query($sql);
  271. $sql = "DELETE FROM ".$table_qui_ans." WHERE c_id = ".$this->course_id." AND question_id IN(".$orphan_ids.")";
  272. Database::query($sql);
  273. $sql = "DELETE FROM ".$table_qui_que." WHERE c_id = ".$this->course_id." AND id IN(".$orphan_ids.")";
  274. Database::query($sql);
  275. }
  276. }
  277. }
  278. // Purge "deleted" tests (active = -1).
  279. $sql = "DELETE FROM ".$table_qui." WHERE c_id = ".$this->course_id." AND active = -1";
  280. Database::query($sql);
  281. }
  282. /**
  283. * Recycle surveys - removes everything
  284. */
  285. function recycle_surveys()
  286. {
  287. if ($this->course->has_resources(RESOURCE_SURVEY))
  288. {
  289. $table_survey = Database :: get_course_table(TABLE_SURVEY);
  290. $table_survey_q = Database :: get_course_table(TABLE_SURVEY_QUESTION);
  291. $table_survey_q_o = Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION);
  292. $table_survey_a = Database :: get_course_Table(TABLE_SURVEY_ANSWER);
  293. $table_survey_i = Database :: get_course_table(TABLE_SURVEY_INVITATION);
  294. $ids = implode(',', (array_keys($this->course->resources[RESOURCE_SURVEY])));
  295. $sql = "DELETE FROM ".$table_survey_i." WHERE c_id = ".$this->course_id." ";
  296. Database::query($sql);
  297. $sql = "DELETE FROM ".$table_survey_a." WHERE c_id = ".$this->course_id." AND survey_id IN(".$ids.")";
  298. Database::query($sql);
  299. $sql = "DELETE FROM ".$table_survey_q_o." WHERE c_id = ".$this->course_id." AND survey_id IN(".$ids.")";
  300. Database::query($sql);
  301. $sql = "DELETE FROM ".$table_survey_q." WHERE c_id = ".$this->course_id." AND survey_id IN(".$ids.")";
  302. Database::query($sql);
  303. $sql = "DELETE FROM ".$table_survey." WHERE c_id = ".$this->course_id." AND survey_id IN(".$ids.")";
  304. Database::query($sql);
  305. }
  306. }
  307. /**
  308. * Recycle learnpaths
  309. */
  310. function recycle_learnpaths()
  311. {
  312. if ($this->course->has_resources(RESOURCE_LEARNPATH)) {
  313. $table_main = Database :: get_course_table(TABLE_LP_MAIN);
  314. $table_item = Database :: get_course_table(TABLE_LP_ITEM);
  315. $table_view = Database :: get_course_table(TABLE_LP_VIEW);
  316. $table_iv = Database :: get_course_table(TABLE_LP_ITEM_VIEW);
  317. $table_iv_int = Database::get_course_table(TABLE_LP_IV_INTERACTION);
  318. $table_tool = Database::get_course_table(TABLE_TOOL_LIST);
  319. foreach($this->course->resources[RESOURCE_LEARNPATH] as $id => $learnpath) {
  320. // See task #875.
  321. if ($learnpath->lp_type == 2) {
  322. // This is a learning path of SCORM type.
  323. if (trim($learnpath->path) != '') // A sanity check for avoiding removal of the parent folder scorm/
  324. // when $learnpath->path value is incorrect for some reason.
  325. {
  326. // The directory trat contains files of the SCORM package is to be deleted.
  327. $scorm_package_dir = realpath($this->course->path . 'scorm/' . $learnpath->path);
  328. rmdirr($scorm_package_dir);
  329. }
  330. }
  331. //remove links from course homepage
  332. $sql = "DELETE FROM $table_tool WHERE c_id = ".$this->course_id." AND link LIKE '%lp_controller.php%lp_id=$id%' AND image='scormbuilder.gif'";
  333. Database::query($sql);
  334. //remove elements from lp_* tables (from bottom-up) by removing interactions, then item_view, then views and items, then paths
  335. $sql_items = "SELECT id FROM $table_item WHERE c_id = ".$this->course_id." AND lp_id=$id";
  336. $res_items = Database::query($sql_items);
  337. while ($row_item = Database::fetch_array($res_items)) {
  338. //get item views
  339. $sql_iv = "SELECT id FROM $table_iv WHERE c_id = ".$this->course_id." AND lp_item_id=".$row_item['id'];
  340. $res_iv = Database::query($sql_iv);
  341. while ($row_iv = Database::fetch_array($res_iv)) {
  342. //delete interactions
  343. $sql_iv_int_del = "DELETE FROM $table_iv_int WHERE c_id = ".$this->course_id." AND lp_iv_id = ".$row_iv['id'];
  344. $res_iv_int_del = Database::query($sql_iv_int_del);
  345. }
  346. //delete item views
  347. $sql_iv_del = "DELETE FROM $table_iv WHERE c_id = ".$this->course_id." AND lp_item_id=".$row_item['id'];
  348. $res_iv_del = Database::query($sql_iv_del);
  349. }
  350. //delete items
  351. $sql_items_del = "DELETE FROM $table_item WHERE c_id = ".$this->course_id." AND lp_id=$id";
  352. $res_items_del = Database::query($sql_items_del);
  353. //delete views
  354. $sql_views_del = "DELETE FROM $table_view WHERE c_id = ".$this->course_id." AND lp_id=$id";
  355. $res_views_del = Database::query($sql_views_del);
  356. //delete lps
  357. $sql_del = "DELETE FROM $table_main WHERE c_id = ".$this->course_id." AND id = $id";
  358. $res_del = Database::query($sql_del);
  359. }
  360. }
  361. }
  362. /**
  363. * Delete course description
  364. */
  365. function recycle_cours_description() {
  366. if ($this->course->has_resources(RESOURCE_COURSEDESCRIPTION)) {
  367. $table = Database :: get_course_table(TABLE_COURSE_DESCRIPTION);
  368. $ids = implode(',', (array_keys($this->course->resources[RESOURCE_COURSEDESCRIPTION])));
  369. $sql = "DELETE FROM ".$table." WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
  370. Database::query($sql);
  371. }
  372. }
  373. /**
  374. * Recycle Thematics
  375. */
  376. function recycle_thematic($session_id = 0) {
  377. if ($this->course->has_resources(RESOURCE_THEMATIC)) {
  378. $table_thematic = Database :: get_course_table(TABLE_THEMATIC);
  379. $table_thematic_advance = Database :: get_course_table(TABLE_THEMATIC_ADVANCE);
  380. $table_thematic_plan = Database :: get_course_table(TABLE_THEMATIC_PLAN);
  381. $resources = $this->course->resources;
  382. foreach ($resources[RESOURCE_THEMATIC] as $last_id => $thematic) {
  383. if (is_numeric($last_id)) {
  384. foreach($thematic->thematic_advance_list as $thematic_advance) {
  385. $cond = array('id = ? AND c_id = ?'=>array($thematic_advance['id'], $this->course_id));
  386. api_item_property_update($this->course_info, 'thematic_advance', $thematic_advance['id'],'ThematicAdvanceDeleted', api_get_user_id());
  387. Database::delete($table_thematic_advance, $cond);
  388. }
  389. foreach($thematic->thematic_plan_list as $thematic_plan) {
  390. $cond = array('id = ? AND c_id = ?'=>array($thematic_plan['id'], $this->course_id));
  391. api_item_property_update($this->course_info, 'thematic_plan', $thematic_advance['id'], 'ThematicPlanDeleted', api_get_user_id());
  392. Database::delete($table_thematic_plan, $cond);
  393. }
  394. $cond = array('id = ? AND c_id = ?'=>array($last_id, $this->course_id));
  395. api_item_property_update($this->course_info, 'thematic', $last_id,'ThematicDeleted', api_get_user_id());
  396. Database::delete($table_thematic,$cond);
  397. }
  398. }
  399. }
  400. }
  401. /**
  402. * Recycle Attendances
  403. */
  404. function recycle_attendance($session_id = 0) {
  405. if ($this->course->has_resources(RESOURCE_ATTENDANCE)) {
  406. $table_attendance = Database :: get_course_table(TABLE_ATTENDANCE, $this->course->destination_db);
  407. $table_attendance_calendar = Database :: get_course_table(TABLE_ATTENDANCE_CALENDAR, $this->course->destination_db);
  408. $resources = $this->course->resources;
  409. foreach ($resources[RESOURCE_ATTENDANCE] as $last_id => $obj) {
  410. print_r($obj);
  411. if (is_numeric($last_id)) {
  412. foreach($obj->attendance_calendar as $attendance_calendar) {
  413. $cond = array('id = ?'=>$attendance_calendar['id']);
  414. $my_id = Database::delete($table_attendance_calendar, $cond);
  415. }
  416. $cond = array('id = ?'=>$last_id);
  417. Database::delete($table_attendance, $cond);
  418. api_item_property_update($this->destination_course_info, TOOL_ATTENDANCE, $last_id,'AttendanceDeleted', api_get_user_id());
  419. }
  420. }
  421. }
  422. }
  423. }