Raise error for invalid fields in sqlmodel_update method

Added an AttributeError in SQLModel.sqlmodel_update when attempting to set a field that does not exist on the model. This improves error visibility and prevents silent failures when invalid fields are provided.

Author: JusticeBrains

sqlmodel/main.py

@@ -997,6 +997,8 @@ def sqlmodel_update(
             for key, value in {**obj, **use_update}.items():
                 if key in get_model_fields(self):
                     setattr(self, key, value)
+                else:
+                    raise AttributeError(f"'{type(self).__name__}' has no field '{key}'")
         elif isinstance(obj, BaseModel):
             for key in get_model_fields(obj):
                 if key in use_update: