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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2015-01-26 16:58:11 -0500 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2015-01-26 16:58:11 -0500 |
| commit | 54e68dc8bd4c4c982864b80f1ff90785a97425fe (patch) | |
| tree | fe6eaf37a81e32fa53b9946f66c9fd4f157c6505 /lib/sqlalchemy | |
| parent | 20cdf0e8550e5d2d7a5f2b3ad1e3b8bd354e9b6c (diff) | |
| parent | 0e61acaf145f57c78a13fc5c20052e24472cfb02 (diff) | |
| download | sqlalchemy-54e68dc8bd4c4c982864b80f1ff90785a97425fe.tar.gz | |
Merge branch 'bb_issue_3262' of https://bitbucket.org/xflr6/sqlalchemy
Diffstat (limited to 'lib/sqlalchemy')
| -rw-r--r-- | lib/sqlalchemy/orm/mapper.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py index 74d8f3860..eb5abbd4f 100644 --- a/lib/sqlalchemy/orm/mapper.py +++ b/lib/sqlalchemy/orm/mapper.py @@ -974,6 +974,15 @@ class Mapper(InspectionAttr): self._all_tables = self.inherits._all_tables if self.polymorphic_identity is not None: + if self.polymorphic_identity in self.polymorphic_map: + util.warn( + "Reassigning polymorphic association for identity %r " + "from %r to %r: Check for duplicate use of %r as " + "value for polymorphic_identity." % + (self.polymorphic_identity, + self.polymorphic_map[self.polymorphic_identity], + self, self.polymorphic_identity) + ) self.polymorphic_map[self.polymorphic_identity] = self else: |