add possibility to query formfields in a database

app/modules/filesinfolders.php

@@ -423,6 +423,30 @@ class FilesInFolders {
                             $v['template']
                         );
                     }
+                    if (array_key_exists('db',$v)) {
+                        switch ($v['db']['type']) {
+                        case 'sqlite':
+                            $array = [];
+                            $db = new \DB\SQL('sqlite:' . $this->folder . $v['db']['file']);
+                            $sql = $v['db']['sql'];
+                            if ( strpos($sql,'insert')===false &&
+                                 strpos($sql,'update')===false &&
+                                 strpos($sql,'drop')===false) {
+                                $rows = $db->exec($sql);
+                                foreach ($rows as $res) {
+                                    switch (count($res)) {
+                                    case 2:
+                                        $keys=array_keys($res);
+                                        $array[$res[$keys[0]]] = $res[$keys[1]];
+                                        break;
+                                    }
+                                }
+                            }
+                            $fields[$k]['el'] = $array;
+                            unset($array);
+                            break;
+                        }
+                    }
                 }
 
                 $f3->set('fields',