lp_ajax_initialize.php 6.2 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * This script contains the server part of the xajax interaction process.
  5. * This script, in particular, enables the process of SCO's initialization. It
  6. * resets the JavaScript values for each SCO to the current LMS status.
  7. *
  8. * @package chamilo.learnpath
  9. *
  10. * @author Yannick Warnier <ywarnier@beeznest.org>
  11. */
  12. // Flag to allow for anonymous user - needs to be set before global.inc.php
  13. $use_anonymous = true;
  14. require_once __DIR__.'/../inc/global.inc.php';
  15. /**
  16. * Get one item's details.
  17. *
  18. * @param int LP ID
  19. * @param int user ID
  20. * @param int View ID
  21. * @param int Current item ID
  22. * @param int New item ID
  23. *
  24. * @return string
  25. */
  26. function initialize_item($lp_id, $user_id, $view_id, $next_item)
  27. {
  28. $debug = 0;
  29. $return = '';
  30. if ($debug) {
  31. error_log('In initialize_item('.$lp_id.','.$user_id.','.$view_id.','.$next_item.')');
  32. }
  33. /*$item_id may be one of:
  34. * -'next'
  35. * -'previous'
  36. * -'first'
  37. * -'last'
  38. * - a real item ID
  39. */
  40. $mylp = learnpath::getLpFromSession(api_get_course_id(), $lp_id, $user_id);
  41. $mylp->set_current_item($next_item);
  42. if ($debug) {
  43. error_log('In initialize_item() - new item is '.$next_item);
  44. }
  45. $mylp->start_current_item(true);
  46. if (is_object($mylp->items[$next_item])) {
  47. if ($debug) {
  48. error_log('In initialize_item - recovering existing item object '.$next_item, 0);
  49. }
  50. $mylpi = $mylp->items[$next_item];
  51. } else {
  52. if ($debug) {
  53. error_log('In initialize_item - generating new item object '.$next_item, 0);
  54. }
  55. $mylpi = new learnpathItem($next_item, $user_id);
  56. }
  57. if ($mylpi) {
  58. $mylpi->set_lp_view($view_id);
  59. }
  60. /*
  61. * now get what's needed by the SCORM API:
  62. * -score
  63. * -max
  64. * -min
  65. * -lesson_status
  66. * -session_time
  67. * -suspend_data
  68. */
  69. $myscore = $mylpi->get_score();
  70. $mymax = $mylpi->get_max();
  71. if ($mymax === '') {
  72. $mymax = "''";
  73. }
  74. $mymin = $mylpi->get_min();
  75. $mylesson_status = $mylpi->get_status();
  76. $mytotal_time = $mylpi->get_scorm_time('js', null, true);
  77. $mymastery_score = $mylpi->get_mastery_score();
  78. $mymax_time_allowed = $mylpi->get_max_time_allowed();
  79. $mylaunch_data = $mylpi->get_launch_data();
  80. $mysession_time = $mylpi->get_total_time();
  81. $mysuspend_data = $mylpi->get_suspend_data();
  82. $mylesson_location = $mylpi->get_lesson_location();
  83. $myic = $mylpi->get_interactions_count();
  84. $myistring = '';
  85. for ($i = 0; $i < $myic; $i++) {
  86. $myistring .= ",[".$i.",'','','','','','','']";
  87. }
  88. if (!empty($myistring)) {
  89. $myistring = substr($myistring, 1);
  90. }
  91. // Obtention des donnees d'objectifs
  92. $mycoursedb = Database::get_course_table(TABLE_LP_IV_OBJECTIVE);
  93. $course_id = api_get_course_int_id();
  94. $mylp_iv_id = $mylpi->db_item_view_id;
  95. $phpobjectives = [];
  96. if (!empty($mylp_iv_id)) {
  97. $sql = "SELECT objective_id, status, score_raw, score_max, score_min
  98. FROM $mycoursedb
  99. WHERE lp_iv_id = $mylp_iv_id AND c_id = $course_id
  100. ORDER BY id ASC;";
  101. $res = Database::query($sql);
  102. while ($row = Database::fetch_row($res)) {
  103. $phpobjectives[] = $row;
  104. }
  105. }
  106. $myobjectives = json_encode($phpobjectives);
  107. $return .=
  108. "olms.score=".$myscore.";".
  109. "olms.max=".$mymax.";".
  110. "olms.min=".$mymin.";".
  111. "olms.lesson_status='".$mylesson_status."';".
  112. "olms.lesson_location='".$mylesson_location."';".
  113. "olms.session_time='".$mysession_time."';".
  114. "olms.suspend_data='".$mysuspend_data."';".
  115. "olms.total_time = '".$mytotal_time."';".
  116. "olms.mastery_score = '".$mymastery_score."';".
  117. "olms.max_time_allowed = '".$mymax_time_allowed."';".
  118. "olms.launch_data = '".$mylaunch_data."';".
  119. "olms.interactions = new Array(".$myistring.");".
  120. //"olms.item_objectives = new Array();" .
  121. "olms.item_objectives = ".$myobjectives.";".
  122. "olms.G_lastError = 0;".
  123. "olms.G_LastErrorMessage = 'No error';".
  124. "olms.finishSignalReceived = 0;";
  125. /*
  126. * and re-initialise the rest (proper to the LMS)
  127. * -lms_lp_id
  128. * -lms_item_id
  129. * -lms_old_item_id
  130. * -lms_new_item_id
  131. * -lms_initialized
  132. * -lms_progress_bar_mode
  133. * -lms_view_id
  134. * -lms_user_id
  135. */
  136. $mynext = $mylp->get_next_item_id();
  137. $myprevious = $mylp->get_previous_item_id();
  138. $myitemtype = $mylpi->get_type();
  139. $mylesson_mode = $mylpi->get_lesson_mode();
  140. $mycredit = $mylpi->get_credit();
  141. $mylaunch_data = $mylpi->get_launch_data();
  142. $myinteractions_count = $mylpi->get_interactions_count();
  143. $mycore_exit = $mylpi->get_core_exit();
  144. $return .=
  145. "olms.lms_lp_id=".$lp_id.";".
  146. "olms.lms_item_id=".$next_item.";".
  147. "olms.lms_old_item_id=0;".
  148. "olms.lms_initialized=0;".
  149. "olms.lms_view_id=".$view_id.";".
  150. "olms.lms_user_id=".$user_id.";".
  151. "olms.next_item=".$next_item.";".// This one is very important to replace possible literal strings.
  152. "olms.lms_next_item=".$mynext.";".
  153. "olms.lms_previous_item=".$myprevious.";".
  154. "olms.lms_item_type = '".$myitemtype."';".
  155. "olms.lms_item_credit = '".$mycredit."';".
  156. "olms.lms_item_lesson_mode = '".$mylesson_mode."';".
  157. "olms.lms_item_launch_data = '".$mylaunch_data."';".
  158. "olms.lms_item_interactions_count = '".$myinteractions_count."';".
  159. "olms.lms_item_objectives_count = '".$myinteractions_count."';".
  160. "olms.lms_item_core_exit = '".$mycore_exit."';".
  161. "olms.asset_timer = 0;";
  162. $mylp->set_error_msg('');
  163. $mylp->prerequisites_match(); // Check the prerequisites are all complete.
  164. if ($debug) {
  165. error_log('Prereq_match() returned '.htmlentities($mylp->error), 0);
  166. error_log("return = $return ");
  167. error_log("mylp->lp_view_session_id: ".$mylp->lp_view_session_id);
  168. }
  169. return $return;
  170. }
  171. echo initialize_item(
  172. $_POST['lid'],
  173. $_POST['uid'],
  174. $_POST['vid'],
  175. $_POST['iid']
  176. );