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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2016-01-19 17:08:50 -0500 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2016-01-19 17:08:50 -0500 |
| commit | 5a279e7ae4417062bf4b73921f382c5e5e415a0b (patch) | |
| tree | 0566a466c9870af4b37bf3af3cdf0684a2d8eb40 /lib/sqlalchemy/orm | |
| parent | 39837686b068a6e7016169f31a96a058546e4bdd (diff) | |
| download | sqlalchemy-5a279e7ae4417062bf4b73921f382c5e5e415a0b.tar.gz | |
- the order in which _generate_backref() for different mappers is called
is random; therefore it may be called against the subclass mapper first, so
need to check .concrete on both sides, references #3630
Diffstat (limited to 'lib/sqlalchemy/orm')
| -rw-r--r-- | lib/sqlalchemy/orm/relationships.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/relationships.py b/lib/sqlalchemy/orm/relationships.py index 9b02d86e9..83856eebf 100644 --- a/lib/sqlalchemy/orm/relationships.py +++ b/lib/sqlalchemy/orm/relationships.py @@ -1821,7 +1821,7 @@ class RelationshipProperty(StrategizedProperty): check = set(mapper.iterate_to_root()).\ union(mapper.self_and_descendants) for m in check: - if m.has_property(backref_key): + if m.has_property(backref_key) and not m.concrete: raise sa_exc.ArgumentError( "Error creating backref " "'%s' on relationship '%s': property of that " |