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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-08-19 12:30:35 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-08-19 12:30:35 -0400 |
| commit | f55ae66f70d6b28fbccd75ac9089f11e951c4c39 (patch) | |
| tree | dacf78a6c1f1a59614f9ad226a6071319abe830d | |
| parent | e7b2055866f315a77e1e19a832a5afdae90bfd9f (diff) | |
| download | sqlalchemy-f55ae66f70d6b28fbccd75ac9089f11e951c4c39.tar.gz | |
add missing abstract concrete base changelog
Was missing from commit d0abdbe247dc82db51aa0af3d31b0510
Fixes: #8403
Change-Id: Ic4d9116236072ce495b5bef2671515a24d04eca2
| -rw-r--r-- | doc/build/changelog/unreleased_20/8403.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/doc/build/changelog/unreleased_20/8403.rst b/doc/build/changelog/unreleased_20/8403.rst new file mode 100644 index 000000000..f7d2b6550 --- /dev/null +++ b/doc/build/changelog/unreleased_20/8403.rst @@ -0,0 +1,16 @@ +.. change:: + :tags: bug, orm + :tickets: 8403 + + Added new parameter :paramref:`.AbstractConcreteBase.strict_attrs` to the + :class:`.AbstractConcreteBase` declarative mixin class. The effect of this + parameter is that the scope of attributes on subclasses is correctly + limited to the subclass in which each attribute is declared, rather than + the previous behavior where all attributes of the entire hierarchy are + applied to the base "abstract" class. This produces a cleaner, more correct + mapping where subclasses no longer have non-useful attributes on them which + are only relevant to sibling classes. The default for this parameter is + False, which leaves the previous behavior unchanged; this is to support + existing code that makes explicit use of these attributes in queries. + To migrate to the newer approach, apply explicit attributes to the abstract + base class as needed.
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