Merge pull request #3957 from christianbeeznest/BT19079

Lp: Implement to use the best result of a quiz in lp - refs BT19079

main/install/configuration.dist.php

@@ -263,6 +263,8 @@ $_configuration['system_stable'] = NEW_VERSION_STABLE;
 //$_configuration['lp_replace_http_to_https'] = false;
 // Fix embedded videos inside lps, adding an optional popup
 //$_configuration['lp_fix_embed_content'] = false;
+// Check the prerequisite in lp of a quiz to use only the last score in the attempts
+// $_configuration['lp_prerequisite_use_last_attempt_only'] = false;
 // Manage deleted files marked with "DELETED" (by course and only by allowed by admin)
 //$_configuration['document_manage_deleted_files'] = false;
 // Hide tabs in the main/session/index.php page

main/lp/learnpathItem.class.php

@@ -2354,6 +2354,8 @@ class learnpathItem
                                         if ($this->prevent_reinit == 1) {
                                             // 2. If is completed we check the results in the DB of the quiz.
                                             if ($returnstatus) {
+                                                $checkLastScoreAttempt = api_get_configuration_value('lp_prerequisite_use_last_attempt_only');
+                                                $orderBy = ($checkLastScoreAttempt ? 'ORDER BY exe_date DESC' : 'ORDER BY (exe_result/exe_weighting) DESC');
                                                 $sql = 'SELECT exe_result, exe_weighting
                                                         FROM '.Database::get_main_table(TABLE_STATISTIC_TRACK_E_EXERCISES).'
                                                         WHERE
@@ -2363,7 +2365,7 @@ class learnpathItem
                                                             orig_lp_item_id = '.$prereqs_string.' AND
                                                             status <> "incomplete" AND
                                                             c_id = '.$courseId.'
-                                                        ORDER BY exe_date DESC
+                                                        '.$orderBy.'
                                                         LIMIT 0, 1';
                                                 $rs_quiz = Database::query($sql);
                                                 if ($quiz = Database::fetch_array($rs_quiz)) {