adding error handleing

payroll/api.py

@@ -2,6 +2,7 @@
 
 from django.conf import settings
 from django.http import JsonResponse
+from django.core.exceptions import ValidationError
 
 from core.utils.generic_helpers import get_previous_months_data
 from payroll.views import EditPayrollBaseView
@@ -87,26 +88,52 @@ def post(self, request, *args, **kwargs):
         )
 
         return JsonResponse({})
-
-
+
 class EmployeeNotesApi(EditPayrollBaseView):
     def post(self, request, *args, **kwargs):
-        data = json.loads(request.body)
-        notes = data["notes"]
-        employee_no = data["employee_no"]
-        employee_data = payroll_service.get_employee_data(
-            self.cost_centre,
-            self.financial_year,
-        )
-        employee = next(
-            (item for item in employee_data if str(item["employee_no"]) == employee_no),
-            None,
-        )
-        if employee:
-            payroll_service.update_employee_notes(
-                notes,
-                employee_no,
+        try:
+            data = json.loads(request.body)
+            if not data:
+                return JsonResponse(
+                    {"error": "Missing request body"}, 
+                    status=400
+                )
+            notes = data.get('notes')
+            employee_no = data.get('employee_no')
+
+            if not notes or not employee_no:
+                return JsonResponse(
+                    {"error": "Both 'notes' and 'employee_no' are required"}, 
+                    status=400
+                )
+            employee_data = payroll_service.get_employee_data(
                 self.cost_centre,
                 self.financial_year,
             )
-        return JsonResponse({})
+            employee = next(
+                (item for item in employee_data if str(item["employee_no"]) == employee_no),
+                None,
+            )
+            if employee:
+                payroll_service.update_employee_notes(
+                    notes,
+                    employee_no,
+                    self.cost_centre,
+                    self.financial_year,
+                )
+            return JsonResponse({}, status=204)
+        except json.JSONDecodeError:
+            return JsonResponse(
+                {"error": "Invalid JSON format"}, 
+                status=400
+            )
+        except ValidationError as e:
+            return JsonResponse(
+                {"error": str(e)}, 
+                status=400
+            )
+        except Exception:
+            return JsonResponse(
+                {"error": "An error occurred while processing the request"}, 
+                status=500
+            )