From e1d9570268081c53d60c72726e5309171bf268c9 Mon Sep 17 00:00:00 2001
From: Max Metz <max.metz@scope-sorting.com>
Date: Tue, 27 Aug 2024 20:52:10 +0200
Subject: [PATCH] solving the concatenation issue of a list and a None-type.

---
 src/server/BreCal/database/enums.py               |  4 ++++
 .../BreCal/validators/input_validation_times.py   | 15 ++++++++-------
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/src/server/BreCal/database/enums.py b/src/server/BreCal/database/enums.py
index 04516fc..a3c7de1 100644
--- a/src/server/BreCal/database/enums.py
+++ b/src/server/BreCal/database/enums.py
@@ -62,3 +62,7 @@ class ParticipantFlag(IntFlag):
     """
     undefined = 0
     BSMD = 1
+
+    @classmethod
+    def _missing_(cls, value):
+        return cls.undefined
diff --git a/src/server/BreCal/validators/input_validation_times.py b/src/server/BreCal/validators/input_validation_times.py
index e2c01ef..0385220 100644
--- a/src/server/BreCal/validators/input_validation_times.py
+++ b/src/server/BreCal/validators/input_validation_times.py
@@ -27,8 +27,8 @@ def build_post_data_type_dependent_required_fields_dict()->dict[ShipcallType,dic
     """
     post_data_type_dependent_required_fields_dict = {
         ShipcallType.arrival:{
-            ParticipantType.undefined:None, # should not be set in POST requests
-            ParticipantType.BSMD:None, # should not be set in POST requests
+            ParticipantType.undefined:[], # should not be set in POST requests
+            ParticipantType.BSMD:[], # should not be set in POST requests
             ParticipantType.TERMINAL:["operations_start"],
             ParticipantType.AGENCY:["eta_berth"],
             ParticipantType.MOORING:["eta_berth"],
@@ -37,8 +37,8 @@ def build_post_data_type_dependent_required_fields_dict()->dict[ShipcallType,dic
             ParticipantType.TUG:["eta_berth"],
         },
         ShipcallType.departure:{
-            ParticipantType.undefined:None, # should not be set in POST requests
-            ParticipantType.BSMD:None, # should not be set in POST requests
+            ParticipantType.undefined:[], # should not be set in POST requests
+            ParticipantType.BSMD:[], # should not be set in POST requests
             ParticipantType.TERMINAL:["operations_end"],
             ParticipantType.AGENCY:["etd_berth"],
             ParticipantType.MOORING:["etd_berth"],
@@ -47,8 +47,8 @@ def build_post_data_type_dependent_required_fields_dict()->dict[ShipcallType,dic
             ParticipantType.TUG:["etd_berth"],
         },
         ShipcallType.shifting:{
-            ParticipantType.undefined:None, # should not be set in POST requests
-            ParticipantType.BSMD:None, # should not be set in POST requests
+            ParticipantType.undefined:[], # should not be set in POST requests
+            ParticipantType.BSMD:[], # should not be set in POST requests
             ParticipantType.TERMINAL:["operations_start", "operations_end"],
             ParticipantType.AGENCY:["eta_berth", "etd_berth"],
             ParticipantType.MOORING:["eta_berth", "etd_berth"],
@@ -270,7 +270,8 @@ class InputValidationTimes():
         dependent_required_fields_dict = build_post_data_type_dependent_required_fields_dict()
 
         # select shipcall type &  participant type
-        dependent_required_fields = dependent_required_fields_dict.get(shipcall_type,{}).get(participant_type,None)
+        dependent_required_fields = dependent_required_fields_dict.get(shipcall_type,{}).get(participant_type,[])
+        dependent_required_fields = dependent_required_fields if dependent_required_fields is not None else []
         return dependent_required_fields
     
     @staticmethod