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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2018-04-06 11:39:15 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2018-04-09 09:15:52 -0400 |
| commit | 036cdbe7fb2d651ba5fbbc758c8584df011c8043 (patch) | |
| tree | 651aa5734525e5784a0f879b7752cbfd45fa4922 /doc | |
| parent | 5abeee69e34d45796cdff0770f58f9104da74701 (diff) | |
| download | sqlalchemy-036cdbe7fb2d651ba5fbbc758c8584df011c8043.tar.gz | |
Raise informative exception for non-sortable PK
An informative exception is re-raised when a primary key value is not
sortable in Python during an ORM flush under Python 3, such as an ``Enum``
that has no ``__lt__()`` method; normally Python 3 raises a ``TypeError``
in this case. The flush process sorts persistent objects by primary key
in Python so the values must be sortable.
Change-Id: Ia186968982dcd1234b82f2e701fefa2a1668a7e4
Fixes: #4232
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/build/changelog/unreleased_13/4232.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/build/changelog/unreleased_13/4232.rst b/doc/build/changelog/unreleased_13/4232.rst new file mode 100644 index 000000000..176650afd --- /dev/null +++ b/doc/build/changelog/unreleased_13/4232.rst @@ -0,0 +1,10 @@ +.. change:: + :tags: bug, orm + :tickets: 4232 + + An informative exception is re-raised when a primary key value is not + sortable in Python during an ORM flush under Python 3, such as an ``Enum`` + that has no ``__lt__()`` method; normally Python 3 raises a ``TypeError`` + in this case. The flush process sorts persistent objects by primary key + in Python so the values must be sortable. + |