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Diffstat (limited to 'lib/sqlalchemy/orm/descriptor_props.py')
| -rw-r--r-- | lib/sqlalchemy/orm/descriptor_props.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/descriptor_props.py b/lib/sqlalchemy/orm/descriptor_props.py index 1156a140e..231e531e4 100644 --- a/lib/sqlalchemy/orm/descriptor_props.py +++ b/lib/sqlalchemy/orm/descriptor_props.py @@ -245,6 +245,11 @@ class CompositeProperty(DescriptorProperty): prop = self.parent._columntoproperty[attr] elif isinstance(attr, attributes.InstrumentedAttribute): prop = attr.property + else: + raise sa_exc.ArgumentError( + "Composite expects Column or Column-bound " + "attributes/attribute names as arguments, got: %r" + % (attr,)) props.append(prop) @property |