added: exclusion violation custom error

mathesar/api/exceptions/database_exceptions/exceptions.py

@@ -400,7 +400,7 @@ class ExclusionViolationAPIException(MathesarAPIException):
     def __init__(
             self,
             exception,
-            message=None,
+            message="The requested update violates an exclusion constraint",
             field=None,
             details=None,
             status_code=status.HTTP_500_INTERNAL_SERVER_ERROR

mathesar/api/serializers/records.py

@@ -1,4 +1,4 @@
-from psycopg2.errors import NotNullViolation, UniqueViolation, CheckViolation
+from psycopg2.errors import NotNullViolation, UniqueViolation, CheckViolation, ExclusionViolation
 from rest_framework import serializers
 from rest_framework import status
 from sqlalchemy.exc import IntegrityError
@@ -53,6 +53,11 @@ def update(self, instance, validated_data):
                     e,
                     status_code=status.HTTP_400_BAD_REQUEST
                 )
+            elif type(e.orig) is ExclusionViolation:
+                raise database_api_exceptions.ExclusionViolationAPIException(
+                    e,
+                    status_code=status.HTTP_400_BAD_REQUEST,
+                )
             else:
                 raise database_api_exceptions.MathesarAPIException(e, status_code=status.HTTP_400_BAD_REQUEST)
         return record
@@ -80,6 +85,11 @@ def create(self, validated_data):
                     e,
                     status_code=status.HTTP_400_BAD_REQUEST
                 )
+            elif type(e.orig) is ExclusionViolation:
+                raise database_api_exceptions.ExclusionViolationAPIException(
+                    e,
+                    status_code=status.HTTP_400_BAD_REQUEST,
+                )
             else:
                 raise database_api_exceptions.MathesarAPIException(e, status_code=status.HTTP_400_BAD_REQUEST)
         return record