Search diagnosis - Add searching by course multilanguage and count of users - refs BT#19560

main/admin/course_add.php

@@ -188,6 +188,16 @@ $obj->fill_grade_model_select_in_form($form);
 $extra_field = new ExtraField('course');
 $extra = $extra_field->addElements($form);
 
+if (api_get_configuration_value('allow_course_multiple_languages')) {
+    // Course Multiple language.
+    $cbMultiLanguage = $form->getElementByName('extra_multiple_language');
+    if (isset($cbMultiLanguage)) {
+        foreach ($languages['folder'] as $langFolder) {
+            $cbMultiLanguage->addOption($langFolder, $langFolder);
+        }
+    }
+}
+
 $htmlHeadXtra[] = '
 <script>
 

main/admin/course_edit.php

@@ -295,6 +295,17 @@ $extra = $extra_field->addElements(
     true
 );
 
+if (api_get_configuration_value('allow_course_multiple_languages')) {
+    // Course Multiple language.
+    $languages = api_get_languages();
+    $cbMultiLanguage = $form->getElementByName('extra_multiple_language');
+    if (isset($cbMultiLanguage)) {
+        foreach ($languages['folder'] as $langFolder) {
+            $cbMultiLanguage->addOption($langFolder, $langFolder);
+        }
+    }
+}
+
 $htmlHeadXtra[] = '
 <script>
 $(function() {

main/inc/lib/sessionmanager.lib.php

@@ -723,7 +723,23 @@ class SessionManager
             $inject_joins .= " INNER JOIN $table sc ON (sc.session_id = s.id)
                                INNER JOIN $tableCourse c ON (sc.c_id = c.id)";
             $language = Database::escape_string($language);
-            $where .= " AND c.course_language = '$language' ";
+
+            if (true === api_get_configuration_value('allow_course_multiple_languages')) {
+                $tblExtraField = Database::get_main_table(TABLE_EXTRA_FIELD);
+                $tblExtraFieldValue = Database::get_main_table(TABLE_EXTRA_FIELD_VALUES);
+                $extraFieldType = ExtraField::COURSE_FIELD_TYPE;
+                $sql = "SELECT id FROM $tblExtraField WHERE extra_field_type = $extraFieldType AND variable = 'multiple_language'";
+                $rs = Database::query($sql);
+                if (Database::num_rows($rs) > 0) {
+                    $fieldId = Database::result($rs, 0, 0);
+                    $inject_joins .= " INNER JOIN $tblExtraFieldValue cfv ON (c.id = cfv.item_id AND cfv.field_id = $fieldId)";
+                    $where .= " AND (c.course_language = '$language' OR cfv.value LIKE '%$language%')";
+                } else {
+                    $where .= " AND c.course_language = '$language' ";
+                }
+            } else {
+                $where .= " AND c.course_language = '$language' ";
+            }
         }
 
         $query = "$select FROM $tbl_session s $inject_joins $where $inject_where";
@@ -787,6 +803,12 @@ class SessionManager
                         null,
                         true
                     );
+                    $usersLang = self::getCountUsersLangBySession($session['id']);
+                    $tooltipUserLangs = '';
+                    if (!empty($usersLang)) {
+                        $tooltipUserLangs = implode(' | ', $usersLang);
+                    }
+                    $session['users'] = '<a href="#" title="'.$tooltipUserLangs.'">'.$session['users'].'</a>';
                     $courses = self::getCoursesInSession($session_id);
                     $teachers = '';
                     foreach ($courses as $courseId) {
@@ -4541,6 +4563,55 @@ class SessionManager
         return 0;
     }
 
+    /**
+     * Get the count of users by language and session
+     *
+     * @param $sid
+     * @param int $urlId
+     * @param null $status
+     *
+     * @return array A list of ISO lang of users registered in the session , ex: FR 6
+     */
+    public static function getCountUsersLangBySession(
+        $sid,
+        $urlId = 0,
+        $status = null
+    ) {
+
+        $sid = (int) $sid;
+        $urlId = empty($urlId) ? api_get_current_access_url_id() : (int) $urlId;
+
+        $tblUser = Database::get_main_table(TABLE_MAIN_USER);
+        $tblSessionUser = Database::get_main_table(TABLE_MAIN_SESSION_USER);
+        $tableAccessUrlUser = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
+        $tableLanguage = Database::get_main_table(TABLE_MAIN_LANGUAGE);
+
+        $sql = "SELECT l.isocode, count(u.user_id) as cLang
+                FROM $tblSessionUser su
+                INNER JOIN $tblUser u ON (u.user_id = su.user_id)
+                INNER JOIN $tableLanguage l ON (l.dokeos_folder = u.language)
+                LEFT OUTER JOIN $tableAccessUrlUser au ON (au.user_id = u.user_id)
+                ";
+
+        if (is_numeric($status)) {
+            $status = (int) $status;
+            $sql .= " WHERE su.relation_type = $status AND (au.access_url_id = $urlId OR au.access_url_id is null)";
+        } else {
+            $sql .= " WHERE (au.access_url_id = $urlId OR au.access_url_id is null )";
+        }
+        $sql .= " AND su.session_id = $sid GROUP BY l.isocode";
+
+        $rs = Database::query($sql);
+        $usersLang = [];
+        if (Database::num_rows($rs) > 0) {
+            while ($row = Database::fetch_assoc($rs)) {
+                $usersLang[] = strtoupper($row['isocode'])." ".$row['cLang'];
+            }
+        }
+
+        return $usersLang;
+    }
+
     /**
      * Get users by session.
      *

main/install/configuration.dist.php

@@ -1669,3 +1669,16 @@ VALUES (21, 13, 'send_notification_at_a_specific_date', 'Send notification at a
 
 //Allows to add increment in minutes to the date range component timepicker, example: 5,10,30 minutes
 //$_configuration['timepicker_increment'] = 5;
+
+// Allow multiple languages to a course
+// as a selection bar for languages used in the course.
+// Add another field "multilingual" to be used separately as a true/false
+// field to represent the fact that the course can have content in multiple
+// languages (without precision).
+// Requires DB change:
+/*
+INSERT INTO `extra_field` (`extra_field_type`, `field_type`, `variable`, `display_text`, `default_value`, `field_order`, `visible_to_self`, `visible_to_others`, `changeable`, `filter`, `created_at`) VALUES
+(2,     5,      'multiple_language',    'Multiple Language', '',        0,      1,      0,      1,      0,      NOW());
+*/
+//$_configuration['allow_course_multiple_languages'] = false;
+