skill.lib.php 31 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * This class provides methods for the notebook management.
  5. * Include/require it in your code to use its features.
  6. * @package chamilo.library
  7. */
  8. /**
  9. * Code
  10. */
  11. define ('SKILL_TYPE_REQUIREMENT', 'required');
  12. define ('SKILL_TYPE_ACQUIRED', 'acquired');
  13. define ('SKILL_TYPE_BOTH', 'both');
  14. require_once api_get_path(LIBRARY_PATH).'model.lib.php';
  15. class SkillProfile extends Model {
  16. var $columns = array('id', 'name', 'description');
  17. public function __construct() {
  18. $this->table = Database::get_main_table(TABLE_MAIN_SKILL_PROFILE);
  19. $this->table_rel_profile = Database::get_main_table(TABLE_MAIN_SKILL_REL_PROFILE);
  20. }
  21. public function get_profiles() {
  22. $sql = "SELECT * FROM $this->table p INNER JOIN $this->table_rel_profile sp ON(p.id = sp.profile_id) ";
  23. $result = Database::query($sql);
  24. $profiles = Database::store_result($result,'ASSOC');
  25. return $profiles;
  26. }
  27. public function save($params, $show_query = false) {
  28. if (!empty($params)) {
  29. $profile_id = parent::save($params, $show_query);
  30. if ($profile_id) {
  31. $skill_rel_profile = new SkillRelProfile();
  32. if (isset($params['skills'])) {
  33. foreach($params['skills'] as $skill_id) {
  34. $attributes = array('skill_id' => $skill_id, 'profile_id'=>$profile_id);
  35. $skill_rel_profile->save($attributes);
  36. }
  37. }
  38. return $profile_id;
  39. }
  40. }
  41. return false;
  42. }
  43. }
  44. class SkillRelProfile extends Model {
  45. var $columns = array('id', 'skill_id', 'profile_id');
  46. public function __construct() {
  47. $this->table = Database::get_main_table(TABLE_MAIN_SKILL_REL_PROFILE);
  48. }
  49. public function get_skills_by_profile($profile_id) {
  50. $skills = $this->get_all(array('where'=>array('profile_id = ? ' => $profile_id)));
  51. $return_array = array();
  52. if (!empty($skills)) {
  53. foreach($skills as $skill_data) {
  54. $return_array[] = $skill_data['skill_id'];
  55. }
  56. }
  57. return $return_array;
  58. }
  59. }
  60. class SkillRelSkill extends Model {
  61. var $columns = array('skill_id', 'parent_id','relation_type', 'level');
  62. public function __construct() {
  63. $this->table = Database::get_main_table(TABLE_MAIN_SKILL_REL_SKILL);
  64. }
  65. /**
  66. * Gets an element
  67. */
  68. public function get_skill_info($id) {
  69. if (empty($id)) { return array(); }
  70. $result = Database::select('*',$this->table, array('where'=>array('skill_id = ?'=>intval($id))), 'first');
  71. return $result;
  72. }
  73. public function get_skill_parents($skill_id, $add_child_info = true) {
  74. $skill_id = intval($skill_id);
  75. $sql = 'SELECT child.* FROM '.$this->table.' child LEFT JOIN '.$this->table.' parent
  76. ON child.parent_id = parent.skill_id
  77. WHERE child.skill_id = '.$skill_id.' ';
  78. $result = Database::query($sql);
  79. $skill = Database::store_result($result,'ASSOC');
  80. $skill = isset($skill[0]) ? $skill[0] : null;
  81. $parents = array();
  82. if (!empty($skill)) {
  83. if ($skill['parent_id'] != null) {
  84. $parents = self::get_skill_parents($skill['parent_id']);
  85. }
  86. if ($add_child_info) {
  87. $parents[] = $skill;
  88. }
  89. }
  90. return $parents;
  91. }
  92. public function get_direct_parents($skill_id) {
  93. $skill_id = intval($skill_id);
  94. $sql = 'SELECT parent_id as skill_id FROM '.$this->table.'
  95. WHERE skill_id = '.$skill_id.' ';
  96. $result = Database::query($sql);
  97. $skill = Database::store_result($result,'ASSOC');
  98. $skill = isset($skill[0]) ? $skill[0] : null;
  99. $parents = array();
  100. if (!empty($skill)) {
  101. $parents[] = $skill;
  102. }
  103. return $parents;
  104. }
  105. public function get_children($skill_id, $load_user_data = false, $user_id = false) {
  106. $skills = $this->find('all', array('where'=> array('parent_id = ? '=> $skill_id)));
  107. $skill_obj = new Skill();
  108. $skill_rel_user = new SkillRelUser();
  109. if ($load_user_data) {
  110. $passed_skills = $skill_rel_user->get_user_skills($user_id);
  111. $done_skills = array();
  112. foreach ($passed_skills as $done_skill) {
  113. $done_skills[] = $done_skill['skill_id'];
  114. }
  115. }
  116. if (!empty($skills)) {
  117. foreach ($skills as &$skill) {
  118. $skill['data'] = $skill_obj->get($skill['skill_id']);
  119. if (isset($skill['data']) && !empty($skill['data'])) {
  120. if (!empty($done_skills)) {
  121. $skill['data']['passed'] = 0;
  122. if (in_array($skill['skill_id'], $done_skills)) {
  123. $skill['data']['passed'] = 1;
  124. }
  125. }
  126. } else {
  127. $skill = null;
  128. }
  129. }
  130. }
  131. return $skills;
  132. }
  133. function update_by_skill($params) {
  134. $result = Database::update($this->table, $params, array('skill_id = ? '=> $params['skill_id']));
  135. if ($result) {
  136. return true;
  137. }
  138. return false;
  139. }
  140. function relation_exists($skill_id, $parent_id) {
  141. $result = $this->find('all', array('where'=>array('skill_id = ? AND parent_id = ?' => array($skill_id, $parent_id))));
  142. if (!empty($result)) {
  143. return true;
  144. }
  145. return false;
  146. }
  147. }
  148. /**
  149. * @package chamilo.library
  150. */
  151. class SkillRelGradebook extends Model {
  152. var $columns = array('id', 'gradebook_id','skill_id');
  153. public function __construct() {
  154. $this->table = Database::get_main_table(TABLE_MAIN_SKILL_REL_GRADEBOOK);
  155. }
  156. public function exists_gradebook_skill($gradebook_id, $skill_id) {
  157. $result = $this->find('all', array('where'=>array('gradebook_id = ? AND skill_id = ?' => array($gradebook_id, $skill_id))));
  158. if (!empty($result)) {
  159. return true;
  160. }
  161. return false;
  162. }
  163. /**
  164. * Gets an element
  165. */
  166. public function get_skill_info($skill_id, $gradebook_id) {
  167. if (empty($skill_id)) { return array(); }
  168. $result = Database::select('*',$this->table, array('where'=>array('skill_id = ? AND gradebook_id = ? '=>array($skill_id, $gradebook_id))),'first');
  169. return $result;
  170. }
  171. public function update_gradebooks_by_skill($skill_id, $gradebook_list) {
  172. $original_gradebook_list = $this->find('all', array('where'=>array('skill_id = ?' => array($skill_id))));
  173. $gradebooks_to_remove = array();
  174. $gradebooks_to_add = array();
  175. $original_gradebook_list_ids = array();
  176. if (!empty($original_gradebook_list)) {
  177. foreach ($original_gradebook_list as $gradebook) {
  178. if (!in_array($gradebook['gradebook_id'], $gradebook_list)) {
  179. $gradebooks_to_remove[] = $gradebook['id'];
  180. }
  181. }
  182. foreach($original_gradebook_list as $gradebook_item) {
  183. $original_gradebook_list_ids[] = $gradebook_item['gradebook_id'];
  184. }
  185. }
  186. if (!empty($gradebook_list))
  187. foreach($gradebook_list as $gradebook_id) {
  188. if (!in_array($gradebook_id, $original_gradebook_list_ids)) {
  189. $gradebooks_to_add[] = $gradebook_id;
  190. }
  191. }
  192. if (!empty($gradebooks_to_remove)) {
  193. foreach($gradebooks_to_remove as $id) {
  194. $this->delete($id);
  195. }
  196. }
  197. if (!empty($gradebooks_to_add)) {
  198. foreach($gradebooks_to_add as $gradebook_id) {
  199. $attributes = array('skill_id' => $skill_id, 'gradebook_id' => $gradebook_id);
  200. $this->save($attributes);
  201. }
  202. }
  203. }
  204. function update_by_skill($params) {
  205. $skill_info = $this->exists_gradebook_skill($params['gradebook_id'], $params['skill_id']);
  206. if ($skill_info) {
  207. return;
  208. } else {
  209. $result = $this->save($params);
  210. }
  211. if ($result) {
  212. return true;
  213. }
  214. return false;
  215. }
  216. }
  217. /**
  218. * @package chamilo.library
  219. */
  220. class SkillRelUser extends Model {
  221. var $columns = array('id', 'user_id','skill_id','acquired_skill_at','assigned_by');
  222. public function __construct() {
  223. $this->table = Database::get_main_table(TABLE_MAIN_SKILL_REL_USER);
  224. //$this->table_user = Database::get_main_table(TABLE_MAIN_USER);
  225. }
  226. public function get_user_by_skills($skill_list) {
  227. $users = array();
  228. if (!empty($skill_list)) {
  229. $skill_list = array_map('intval', $skill_list);
  230. $skill_list = implode("', '", $skill_list);
  231. $sql = "SELECT user_id FROM {$this->table} WHERE skill_id IN ('$skill_list') ";
  232. $result = Database::query($sql);
  233. $users = Database::store_result($result, 'ASSOC');
  234. }
  235. return $users;
  236. }
  237. public function get_user_skills($user_id) {
  238. if (empty($user_id)) { return array(); }
  239. $result = Database::select('skill_id',$this->table, array('where'=>array('user_id = ?'=>intval($user_id))), 'all');
  240. return $result;
  241. }
  242. }
  243. class Skill extends Model {
  244. var $columns = array('id', 'name','description', 'access_url_id', 'short_code');
  245. var $required = array('name');
  246. /** Array of colours by depth, for the coffee wheel. Each depth has 4 col */
  247. /*var $colours = array(
  248. 0 => array('#f9f0ab', '#ecc099', '#e098b0', '#ebe378'),
  249. 1 => array('#d5dda1', '#4a5072', '#8dae43', '#72659d'),
  250. 2 => array('#b28647', '#2e6093', '#393e64', '#1e8323'),
  251. 3 => array('#9f6652', '#9f6652', '#9f6652', '#9f6652'),
  252. 4 => array('#af643c', '#af643c', '#af643c', '#af643c'),
  253. 5 => array('#72659d', '#72659d', '#72659d', '#72659d'),
  254. 6 => array('#8a6e9e', '#8a6e9e', '#8a6e9e', '#8a6e9e'),
  255. 7 => array('#92538c', '#92538c', '#92538c', '#92538c'),
  256. 8 => array('#2e6093', '#2e6093', '#2e6093', '#2e6093'),
  257. 9 => array('#3a5988', '#3a5988', '#3a5988', '#3a5988'),
  258. 10 => array('#393e64', '#393e64', '#393e64', '#393e64'),
  259. );*/
  260. public function __construct() {
  261. $this->table = Database::get_main_table(TABLE_MAIN_SKILL);
  262. $this->table_user = Database::get_main_table(TABLE_MAIN_USER);
  263. $this->table_skill_rel_gradebook = Database::get_main_table(TABLE_MAIN_SKILL_REL_GRADEBOOK);
  264. $this->table_skill_rel_user = Database::get_main_table(TABLE_MAIN_SKILL_REL_USER);
  265. $this->table_course = Database::get_main_table(TABLE_MAIN_COURSE);
  266. $this->table_skill_rel_skill = Database::get_main_table(TABLE_MAIN_SKILL_REL_SKILL);
  267. $this->table_gradebook = Database::get_main_table(TABLE_MAIN_GRADEBOOK_CATEGORY);
  268. }
  269. function get_skill_info($id) {
  270. $skill_rel_skill = new SkillRelSkill();
  271. $skill_info = $this->get($id);
  272. if (!empty($skill_info)) {
  273. $skill_info['extra'] = $skill_rel_skill->get_skill_info($id);
  274. $skill_info['gradebooks'] = self::get_gradebooks_by_skill($id);
  275. }
  276. return $skill_info;
  277. }
  278. function get_skills_info($skill_list) {
  279. $skill_list = array_map('intval', $skill_list);
  280. $skill_list = implode("', '", $skill_list);
  281. $sql = "SELECT * FROM {$this->table} WHERE id IN ('$skill_list') ";
  282. $result = Database::query($sql);
  283. $users = Database::store_result($result, 'ASSOC');
  284. return $users;
  285. }
  286. function get_all($load_user_data = false, $user_id = false, $id = null, $parent_id = null) {
  287. $id_condition = '';
  288. if (isset($id) && !empty($id)) {
  289. $id = intval($id);
  290. $id_condition = " WHERE s.id = $id";
  291. }
  292. if (isset($parent_id) && !empty($parent_id)) {
  293. $parent_id = intval($parent_id);
  294. if (empty($id_condition)) {
  295. $id_condition = "WHERE ss.parent_id = $parent_id";
  296. } else {
  297. $id_condition = " AND ss.parent_id = $parent_id";
  298. }
  299. }
  300. $sql = "SELECT s.id, s.name, s.description, ss.parent_id, ss.relation_type
  301. FROM {$this->table} s INNER JOIN {$this->table_skill_rel_skill} ss ON (s.id = ss.skill_id) $id_condition
  302. ORDER BY ss.id, ss.parent_id";
  303. $result = Database::query($sql);
  304. $skills = array();
  305. if (Database::num_rows($result)) {
  306. while ($row = Database::fetch_array($result, 'ASSOC')) {
  307. $skill_rel_skill = new SkillRelSkill();
  308. $a = $skill_rel_skill->get_skill_parents($row['id']);
  309. $row['level'] = count($a)-1;
  310. $row['gradebooks'] = self::get_gradebooks_by_skill($row['id']);
  311. $skills[$row['id']] = $row;
  312. }
  313. }
  314. /*
  315. if ($load_user_data && $user_id) {
  316. $passed_skills = $this->get_user_skills($user_id);
  317. foreach ($skills as &$skill) {
  318. $skill['done_by_user'] = 0;
  319. if (in_array($skill['id'], $passed_skills)) {
  320. $skill['done_by_user'] = 1;
  321. }
  322. }
  323. }*/
  324. //Load all children of the parent_id
  325. if (!empty($skills) && !empty($parent_id)) {
  326. foreach ($skills as $skill) {
  327. $children = self::get_all($load_user_data, $user_id, $id, $skill['id']);
  328. if (!empty($children)) {
  329. //$skills = array_merge($skills, $children);
  330. $skills = $skills + $children;
  331. }
  332. }
  333. }
  334. return $skills;
  335. }
  336. function get_gradebooks_by_skill($skill_id) {
  337. $skill_id = intval($skill_id);
  338. $sql = "SELECT g.* FROM {$this->table_gradebook} g INNER JOIN {$this->table_skill_rel_gradebook} sg
  339. ON g.id = sg.gradebook_id
  340. WHERE sg.skill_id = $skill_id";
  341. $result = Database::query($sql);
  342. $result = Database::store_result($result,'ASSOC');
  343. return $result;
  344. }
  345. /* Get one level childrens */
  346. function get_children($skill_id, $load_user_data = false) {
  347. $skill_rel_skill = new SkillRelSkill();
  348. if ($load_user_data) {
  349. $user_id = api_get_user_id();
  350. $skills = $skill_rel_skill->get_children($skill_id, true, $user_id);
  351. } else {
  352. $skills = $skill_rel_skill->get_children($skill_id);
  353. }
  354. return $skills;
  355. }
  356. /* Get all children of the current node (recursive)*/
  357. function get_all_children($skill_id) {
  358. $skill_rel_skill = new SkillRelSkill();
  359. $children = $skill_rel_skill->get_children($skill_id);
  360. foreach ($children as $child) {
  361. $sub_children = $this->get_all_children($child['skill_id']);
  362. }
  363. if (!empty($sub_children)) {
  364. $children = array_merge($children, $sub_children);
  365. }
  366. return $children;
  367. }
  368. /**
  369. * Gets all parents from from the wanted skill
  370. */
  371. function get_parents($skill_id) {
  372. $skill_rel_skill = new SkillRelSkill();
  373. $skills = $skill_rel_skill->get_skill_parents($skill_id, true);
  374. foreach($skills as &$skill) {
  375. $skill['data'] = self::get($skill['skill_id']);
  376. }
  377. return $skills;
  378. }
  379. /**
  380. * All direct parents
  381. */
  382. function get_direct_parents($skill_id) {
  383. $skill_rel_skill = new SkillRelSkill();
  384. $skills = $skill_rel_skill->get_direct_parents($skill_id, true);
  385. foreach($skills as &$skill) {
  386. $skill['data'] = self::get($skill['skill_id']);
  387. $skill_info2 = $skill_rel_skill->get_skill_info($skill['skill_id']);
  388. $skill['data']['parent_id'] = $skill_info2['parent_id'];
  389. }
  390. return $skills;
  391. }
  392. /*
  393. * Adds a new skill
  394. */
  395. public function add($params) {
  396. if (!isset($params['parent_id'])) {
  397. $params['parent_id'] = 1;
  398. }
  399. if (!is_array($params['parent_id'])) {
  400. $params['parent_id'] = array($params['parent_id']);
  401. }
  402. $skill_rel_skill = new SkillRelSkill();
  403. $skill_rel_gradebook = new SkillRelGradebook();
  404. //Saving name, description
  405. $skill_id = $this->save($params);
  406. if ($skill_id) {
  407. //Saving skill_rel_skill (parent_id, relation_type)
  408. foreach ($params['parent_id'] as $parent_id) {
  409. $relation_exists = $skill_rel_skill->relation_exists($skill_id, $parent_id);
  410. if (!$relation_exists) {
  411. $attributes = array(
  412. 'skill_id' => $skill_id,
  413. 'parent_id' => $parent_id,
  414. 'relation_type' => $params['relation_type'],
  415. //'level' => $params['level'],
  416. );
  417. $skill_rel_skill->save($attributes);
  418. }
  419. }
  420. if (!empty($params['gradebook_id'])) {
  421. foreach ($params['gradebook_id'] as $gradebook_id) {
  422. $attributes = array();
  423. $attributes['gradebook_id'] = $gradebook_id;
  424. $attributes['skill_id'] = $skill_id;
  425. $skill_rel_gradebook->save($attributes);
  426. }
  427. }
  428. return $skill_id;
  429. }
  430. return null;
  431. }
  432. public function add_skill_to_user($user_id, $gradebook_id) {
  433. $skill_gradebook = new SkillRelGradebook();
  434. $skill_rel_user = new SkillRelUser();
  435. $skill_gradebooks = $skill_gradebook->get_all(array('where'=>array('gradebook_id = ?' =>$gradebook_id)));
  436. if (!empty($skill_gradebooks)) {
  437. foreach ($skill_gradebooks as $skill_gradebook) {
  438. $user_has_skill = $this->user_has_skill($user_id, $skill_gradebook['skill_id']);
  439. if (!$user_has_skill) {
  440. $params = array( 'user_id' => $user_id,
  441. 'skill_id' => $skill_gradebook['skill_id'],
  442. 'acquired_skill_at' => api_get_utc_datetime(),
  443. );
  444. $skill_rel_user->save($params);
  445. }
  446. }
  447. }
  448. }
  449. /* Deletes a skill */
  450. public function delete($skill_id) {
  451. /*$params = array('skill_id' => $skill_id);
  452. $skill_rel_skill = new SkillRelSkill();
  453. $skills = $skill_rel_skill->get_all(array('where'=>array('skill_id = ?' =>$skill_id)));
  454. $skill_rel_profile = new SkillRelProfile();
  455. $skill_rel_gradebook = new SkillRelGradebook();
  456. $skill_rel_user = new SkillRelUser();
  457. $this->delete($skill_id);
  458. $skill_rel_gradebook->delete($params);*/
  459. }
  460. public function edit($params) {
  461. if (!isset($params['parent_id'])) {
  462. $params['parent_id'] = 1;
  463. }
  464. $skill_rel_skill = new SkillRelSkill();
  465. $skill_rel_gradebook = new SkillRelGradebook();
  466. //Saving name, description
  467. $this->update($params);
  468. $skill_id = $params['id'];
  469. if ($skill_id) {
  470. //Saving skill_rel_skill (parent_id, relation_type)
  471. if (!is_array($params['parent_id'])) {
  472. $params['parent_id'] = array($params['parent_id']);
  473. }
  474. foreach ($params['parent_id'] as $parent_id) {
  475. $relation_exists = $skill_rel_skill->relation_exists($skill_id, $parent_id);
  476. if (!$relation_exists) {
  477. $attributes = array(
  478. 'skill_id' => $skill_id,
  479. 'parent_id' => $parent_id,
  480. 'relation_type' => $params['relation_type'],
  481. //'level' => $params['level'],
  482. );
  483. $skill_rel_skill->update_by_skill($attributes);
  484. }
  485. }
  486. $skill_rel_gradebook->update_gradebooks_by_skill($skill_id, $params['gradebook_id']);
  487. return $skill_id;
  488. }
  489. return null;
  490. }
  491. /**
  492. * Get user's skills
  493. *
  494. * @param int $userId User's id
  495. */
  496. public function get_user_skills($user_id, $get_skill_data = false) {
  497. $user_id = intval($user_id);
  498. $sql = 'SELECT DISTINCT s.id, s.name FROM '.$this->table_skill_rel_user.' u INNER JOIN '.$this->table.' s
  499. ON u.skill_id = s.id
  500. WHERE user_id = '.$user_id;
  501. $result = Database::query($sql);
  502. $skills = Database::store_result($result, 'ASSOC');
  503. $clean_skill = array();
  504. if (!empty($skills)) {
  505. foreach ($skills as $skill) {
  506. if ($get_skill_data) {
  507. $clean_skill[$skill['id']] = $skill;
  508. } else {
  509. $clean_skill[$skill['id']] = $skill['id'];
  510. }
  511. }
  512. }
  513. return $clean_skill;
  514. }
  515. public function get_skills_tree($user_id = null, $skill_id = null, $return_flat_array = false, $add_root = false) {
  516. if ($skill_id == 1 ) {
  517. $skill_id = 0;
  518. }
  519. if (isset($user_id) && !empty($user_id)) {
  520. $skills = $this->get_all(true, $user_id, null, $skill_id);
  521. } else {
  522. $skills = $this->get_all(false, false, null, $skill_id);
  523. }
  524. $original_skill = $skills;
  525. //Show 1 item
  526. if (!empty($skill_id)) {
  527. if ($add_root) {
  528. if (!empty($skill_id)) {
  529. //Default root node
  530. $skills[1] = array('id' => '1', 'name' => get_lang('Root'), 'parent_id' => '0');
  531. $skill_info = $this->get_skill_info($skill_id);
  532. //2nd node
  533. $skills[$skill_id] = $skill_info;
  534. //Uncomment code below to hide the searched skill
  535. $skills[$skill_id]['data']['parent_id'] = $skill_info['parent_id'];
  536. $skills[$skill_id]['parent_id'] = 1;
  537. }
  538. }
  539. }
  540. $refs = array();
  541. $skills_tree = null;
  542. // Create references for all nodes
  543. $flat_array = array();
  544. $family = array();
  545. if (!empty($skills)) {
  546. foreach ($skills as &$skill) {
  547. if ($skill['parent_id'] == 0) {
  548. $skill['parent_id'] = 'root';
  549. }
  550. // because except main keys (id, name, children) others keys are not saved while in the space tree
  551. $skill['data'] = array('parent_id' => $skill['parent_id']);
  552. //In order to paint all members of a family with the same color
  553. if (empty($skill_id)) {
  554. if ($skill['parent_id'] == 1) {
  555. $family[$skill['id']] = $this->get_all_children($skill['id']);
  556. }
  557. } else {
  558. if ($skill['parent_id'] == $skill_id) {
  559. $family[$skill['id']] = $this->get_all_children($skill['id']);
  560. }
  561. /*if ($skill_id == $skill['id']) {
  562. $skill['parent_id'] = 1;
  563. }*/
  564. }
  565. if (!isset($skill['data']['real_parent_id'])) {
  566. $skill['data']['real_parent_id'] = $skill['parent_id'];
  567. }
  568. //User achieved the skill (depends in the gradebook with certification)
  569. $skill['data']['achieved'] = false;
  570. if ($user_id) {
  571. $skill['data']['achieved'] = $this->user_has_skill($user_id, $skill['id']);
  572. }
  573. //Check if the skill has related gradebooks
  574. $skill['data']['skill_has_gradebook'] = false;
  575. if (isset($skill['gradebooks']) && !empty($skill['gradebooks'])) {
  576. $skill['data']['skill_has_gradebook'] = true;
  577. }
  578. $refs[$skill['id']] = &$skill;
  579. $flat_array[$skill['id']] = &$skill;
  580. }
  581. //Checking family value
  582. $family_id = 1;
  583. $new_family_array = array();
  584. foreach ($family as $main_family_id => $family_items) {
  585. if (!empty($family_items)) {
  586. foreach ($family_items as $item) {
  587. $new_family_array[$item['skill_id']] = $family_id;
  588. }
  589. }
  590. $new_family_array[$main_family_id] = $family_id;
  591. $family_id++;
  592. }
  593. if (empty($original_skill)) {
  594. $refs['root']['children'][0] = $skills[1];
  595. $skills[$skill_id]['data']['family_id'] = 1;
  596. $refs['root']['children'][0]['children'][0] = $skills[$skill_id];
  597. $flat_array[$skill_id] = $skills[$skill_id];
  598. } else {
  599. // Moving node to the children index of their parents
  600. foreach ($skills as $my_skill_id => &$skill) {
  601. $skill['data']['family_id'] = $new_family_array[$skill['id']];
  602. $refs[$skill['parent_id']]['children'][] = &$skill;
  603. $flat_array[$my_skill_id] = $skill;
  604. }
  605. }
  606. $skills_tree = array(
  607. 'name' => get_lang('SkillRootName'),
  608. 'id' => 'root',
  609. 'children' => $refs['root']['children'],
  610. 'data' => array()
  611. );
  612. }
  613. if ($return_flat_array) {
  614. return $flat_array;
  615. }
  616. unset($skills);
  617. return $skills_tree;
  618. }
  619. /**
  620. * Get skills tree as a simplified JSON structure
  621. * @param int user id
  622. * @param int skill id
  623. * @param bool return a flat array or not
  624. * @param int depth of the skills
  625. *
  626. */
  627. public function get_skills_tree_json($user_id = null, $skill_id = null, $return_flat_array = false, $main_depth = 2) {
  628. $tree = $this->get_skills_tree($user_id, $skill_id, $return_flat_array, true);
  629. $simple_tree = array();
  630. if (!empty($tree['children'])) {
  631. foreach ($tree['children'] as $element) {
  632. $simple_tree[] = array( 'name' => $element['name'],
  633. 'children' => $this->get_skill_json($element['children'], 1, $main_depth),
  634. );
  635. }
  636. }
  637. //var_dump($simple_tree[0]['children']);
  638. return json_encode($simple_tree[0]['children']);
  639. }
  640. /**
  641. * Get JSON element
  642. */
  643. public function get_skill_json($subtree, $depth = 1, $max_depth = 2) {
  644. $simple_sub_tree = array();
  645. if (is_array($subtree)) {
  646. $counter = 1;
  647. foreach ($subtree as $elem) {
  648. $tmp = array();
  649. $tmp['name'] = $elem['name'];
  650. $tmp['id'] = $elem['id'];
  651. if (is_array($elem['children'])) {
  652. $tmp['children'] = $this->get_skill_json($elem['children'], $depth+1, $max_depth);
  653. } else {
  654. //$tmp['colour'] = $this->colours[$depth][rand(0,3)];
  655. }
  656. if ($depth > $max_depth) {
  657. continue;
  658. }
  659. $tmp['depth'] = $depth;
  660. $tmp['counter'] = $counter;
  661. $counter++;
  662. if (isset($elem['data']) && is_array($elem['data'])) {
  663. foreach ($elem['data'] as $key => $item) {
  664. $tmp[$key] = $item;
  665. }
  666. }
  667. $simple_sub_tree[] = $tmp;
  668. }
  669. return $simple_sub_tree;
  670. }
  671. return null;
  672. }
  673. function get_user_skill_ranking($user_id) {
  674. $user_id = intval($user_id);
  675. $sql = "SELECT count(skill_id) count FROM {$this->table} s INNER JOIN {$this->table_skill_rel_user} su ON (s.id = su.skill_id)
  676. WHERE user_id = $user_id";
  677. $result = Database::query($sql);
  678. if (Database::num_rows($result)) {
  679. $result = Database::fetch_row($result);
  680. return $result[0];
  681. }
  682. return false;
  683. }
  684. function get_user_list_skill_ranking($start, $limit, $sidx, $sord, $where_condition) {
  685. $start = intval($start);
  686. $limit = intval($limit);
  687. /* ORDER BY $sidx $sord */
  688. $sql = "SELECT *, @rownum:=@rownum+1 rank FROM (
  689. SELECT u.user_id, firstname, lastname, count(username) skills_acquired
  690. FROM {$this->table} s INNER JOIN {$this->table_skill_rel_user} su ON (s.id = su.skill_id)
  691. INNER JOIN {$this->table_user} u ON u.user_id = su.user_id, (SELECT @rownum:=0) r
  692. WHERE 1=1 $where_condition
  693. GROUP BY username
  694. ORDER BY skills_acquired desc
  695. LIMIT $start , $limit) AS T1, (SELECT @rownum:=0) r";
  696. $result = Database::query($sql);
  697. if (Database::num_rows($result)) {
  698. return Database::store_result($result, 'ASSOC');
  699. }
  700. return array();
  701. }
  702. function get_user_list_skill_ranking_count() {
  703. $sql = "SELECT count(*) FROM (
  704. SELECT count(distinct 1)
  705. FROM {$this->table} s INNER JOIN {$this->table_skill_rel_user} su ON (s.id = su.skill_id)
  706. INNER JOIN {$this->table_user} u ON u.user_id = su.user_id
  707. GROUP BY username
  708. ) as T1";
  709. $result = Database::query($sql);
  710. if (Database::num_rows($result)) {
  711. $result = Database::fetch_row($result);
  712. return $result[0];
  713. }
  714. return 0;
  715. }
  716. function get_count_skills_by_course($course_code) {
  717. $sql = "SELECT count(skill_id) as count FROM {$this->table_gradebook} g INNER JOIN {$this->table_skill_rel_gradebook} sg ON g.id = sg.gradebook_id
  718. WHERE course_code = '$course_code'";
  719. $result = Database::query($sql);
  720. if (Database::num_rows($result)) {
  721. $result = Database::fetch_row($result);
  722. return $result[0];
  723. }
  724. return 0;
  725. }
  726. function get_courses_by_skill($skill_id) {
  727. $skill_id = intval($skill_id);
  728. $sql = "SELECT c.title, c.code FROM {$this->table_gradebook} g INNER JOIN {$this->table_skill_rel_gradebook} sg ON g.id = sg.gradebook_id
  729. INNER JOIN {$this->table_course} c ON c.code = g.course_code
  730. WHERE sg.skill_id = $skill_id";
  731. $result = Database::query($sql);
  732. return Database::store_result($result, 'ASSOC');
  733. }
  734. /**
  735. * Return true if the user has the skill
  736. *
  737. * @param int $userId User's id
  738. * @param int $skillId Skill's id
  739. * @param int $checkInParents if true, function will search also in parents of the given skill id
  740. *
  741. * @return bool
  742. */
  743. public function user_has_skill($user_id, $skill_id) {
  744. $skills = $this->get_user_skills($user_id);
  745. foreach($skills as $my_skill_id) {
  746. if ($my_skill_id == $skill_id) {
  747. return true;
  748. }
  749. }
  750. return false;
  751. }
  752. }