fix: require vendor when making new ordering batch via api

pretty sure this pattern needs to be expanded and probably improved,
but wanted to fix this one scenario for now, per error email

tailbone/api/batch/ordering.py

@@ -86,6 +86,8 @@ class OrderingBatchViews(APIBatchView):
         Sets the mode to "ordering" for the new batch.
         """
         data = dict(data)
+        if not data.get('vendor_uuid'):
+            raise ValueError("You must specify the vendor")
         data['mode'] = self.enum.PURCHASE_BATCH_MODE_ORDERING
         batch = super().create_object(data)
         return batch

tailbone/api/master.py

@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2023 Lance Edgar
+#  Copyright © 2010-2024 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -31,7 +31,7 @@ from rattail.db.util import get_fieldnames
 
 from cornice import resource, Service
 
-from tailbone.api import APIView, api
+from tailbone.api import APIView
 from tailbone.db import Session
 from tailbone.util import SortColumn
 
@@ -355,9 +355,13 @@ class APIMasterView(APIView):
         data = self.request.json_body
 
         # add instance to session, and return data for it
-        obj = self.create_object(data)
-        self.Session.flush()
-        return self._get(obj)
+        try:
+            obj = self.create_object(data)
+        except Exception as error:
+            return self.json_response({'error': str(error)})
+        else:
+            self.Session.flush()
+            return self._get(obj)
 
     def create_object(self, data):
         """