code to call recorder functions from frointend

backend/models/recorder_model.py

@@ -8,6 +8,7 @@ import json
 import pkgutil
 import os
 import re
+from typing import Union
 
 from sqlalchemy import MetaData
 from sqlalchemy.exc import IntegrityError
@@ -234,8 +235,12 @@ class RecorderCommand(db.Model, ModelBase):
     def get_all():
         return RecorderCommand.query.all()
 
+    @staticmethod
+    def get_by_identifier(identifier):
+        return RecorderCommand.query.filter(RecorderCommand.id == identifier).first()
+
     @property
-    def parameters(self):
+    def parameters(self) -> Union[dict, None]:
         if self.parameters_string is None:
             return None
         return json.loads(self.parameters_string)