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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2014-05-29 19:54:51 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2014-05-29 19:54:51 -0400 |
| commit | 752f2e0fc8dec13e313a00f7c9720d24d21429ed (patch) | |
| tree | b8e8c5aa2ade21e1a80fa55f2d4a9f9756cf9088 /lib/sqlalchemy/orm/util.py | |
| parent | a04f0c1e3719d38e71509635cc1cba43a67ce090 (diff) | |
| download | sqlalchemy-752f2e0fc8dec13e313a00f7c9720d24d21429ed.tar.gz | |
- Adjustment to attribute mechanics concerning when a value is
implicitly initialized to None via first access; this action,
which has always resulted in a population of the attribute,
now emits an attribute event just like any other attribute set
operation and generates the same kind of history as one. Additionally,
many mapper internal operations will no longer implicitly generate
these "None" values when various never-set attributes are checked.
These are subtle behavioral fixes to attribute mechanics which provide
a better solution to the problem of :ticket:`3060`, which also
involves recognition of attributes explicitly set to ``None``
vs. attributes that were never set.
fixes #3061
Diffstat (limited to 'lib/sqlalchemy/orm/util.py')
| -rw-r--r-- | lib/sqlalchemy/orm/util.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/util.py b/lib/sqlalchemy/orm/util.py index 8694705a4..fd902adaf 100644 --- a/lib/sqlalchemy/orm/util.py +++ b/lib/sqlalchemy/orm/util.py @@ -12,7 +12,8 @@ from . import attributes import re from .base import instance_str, state_str, state_class_str, attribute_str, \ - state_attribute_str, object_mapper, object_state, _none_set + state_attribute_str, object_mapper, object_state, _none_set, \ + _none_tuple from .base import class_mapper, _class_to_mapper from .base import _InspectionAttr from .path_registry import PathRegistry |