Privacy: Add "no data" entry where needs be

main/social/personal_data.php

@@ -251,9 +251,13 @@ foreach ($properties as $key => $value) {
         switch ($key) {
             case 'extraFields':
                 $personalDataContent .= '<li>'.$key.': </li><ul>';
+                if (empty($value)) {
+                    $personalDataContent .= '<li>'.get_lang('NoData').'</li>';
+                } else {
                     foreach ($value as $subValue) {
                         $personalDataContent .= '<li>'.$subValue->variable.': '.$subValue->value.'</li>';
                     }
+                }
                 $personalDataContent .= '</ul>';
                 break;
             case 'dropBoxSentFiles':
@@ -261,6 +265,9 @@ foreach ($properties as $key => $value) {
                     $personalDataContent .= '<li class="advanced_options" id="personal-data-list-'.$category.'">';
                     $personalDataContent .= '<u>'.get_lang($category).'</u> &gt;</li>';
                     $personalDataContent .= '<ul id="personal-data-list-'.$category.'_options" style="display:none;">';
+                    if (empty($subValue)) {
+                        $personalDataContent .= '<li>'.get_lang('NoData').'</li>';
+                    } else {
                         foreach ($subValue as $subSubValue) {
                             if ($category === 'DocumentsAdded') {
                                 $documentLink = Display::url(
@@ -272,6 +279,7 @@ foreach ($properties as $key => $value) {
                                 $personalDataContent .= '<li>'.$subSubValue.'</li>';
                             }
                         }
+                    }
                     $personalDataContent .= '</ul>';
                 }
 
@@ -285,18 +293,26 @@ foreach ($properties as $key => $value) {
             case 'groupNames':
             case 'groups':
                 $personalDataContent .= '<li>'.$key.': </li><ul>';
+                if (empty($subValue)) {
+                    $personalDataContent .= '<li>'.get_lang('NoData').'</li>';
+                } else {
                     foreach ($value as $subValue) {
                         $personalDataContent .= '<li>'.$subValue.'</li>';
                     }
+                }
                 $personalDataContent .= '</ul>';
                 break;
             case 'sessionCourseSubscriptions':
                 $personalDataContent .= '<li>'.$key.': </li><ul>';
                 foreach ($value as $session => $courseList) {
                     $personalDataContent .= '<li>'.$session.'<ul>';
+                    if (empty($courseList)) {
+                        $personalDataContent .= '<li>'.get_lang('NoData').'</li>';
+                    } else {
                         foreach ($courseList as $course) {
                             $personalDataContent .= '<li>'.$course.'</li>';
                         }
+                    }
                     $personalDataContent .= '</ul>';
                 }
                 $personalDataContent .= '</ul>';