fix: use prop key instead of column name, for master view model key

every once in a while those can differ, we need prop key when they do

src/wuttaweb/views/master.py

@@ -2707,6 +2707,9 @@ class MasterView(View):
         represents a Wutta-based SQLAlchemy model, the return value
         for this method is: ``('uuid',)``
 
+        Any class mapped via SQLAlchemy should be supported
+        automatically, the keys are determined from class inspection.
+
         But there is no "sane" default for other scenarios, in which
         case subclass should define :attr:`model_key`.  If the model
         key cannot be determined, raises ``AttributeError``.
@@ -2721,8 +2724,12 @@ class MasterView(View):
 
         model_class = cls.get_model_class()
         if model_class:
-            mapper = sa.inspect(model_class)
-            return tuple([column.key for column in mapper.primary_key])
+            # nb. we want the primary key but must avoid column names
+            # in case mapped class uses different prop keys
+            inspector = sa.inspect(model_class)
+            keys = [col.name for col in inspector.primary_key]
+            return tuple([prop.key for prop in inspector.column_attrs
+                          if [col.name for col in prop.columns] == keys])
 
         raise AttributeError(f"you must define model_key for view class: {cls}")