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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-06-24 10:31:46 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-06-24 10:31:46 -0400 |
| commit | 271c38fd15b94d8acd0e6f054c8001b22535844e (patch) | |
| tree | 4209cd2330fe97f32e488e85a4f45b83cc057e28 /lib/sqlalchemy/ext/mutable.py | |
| parent | 6f3a7988599b73677198af20f680fefde723c160 (diff) | |
| download | sqlalchemy-271c38fd15b94d8acd0e6f054c8001b22535844e.tar.gz | |
add fallback for old mutable format
Fixed regression caused by :ticket:`8133` where the pickle format for
mutable attributes was changed, without a fallback to recognize the old
format, causing in-place upgrades of SQLAlchemy to no longer be able to
read pickled data from previous versions. A check plus a fallback for the
old format is now in place.
Fixes: #8133
Change-Id: I9029729b4bc56c8b3145797869229eeff48a3b3b
Diffstat (limited to 'lib/sqlalchemy/ext/mutable.py')
| -rw-r--r-- | lib/sqlalchemy/ext/mutable.py | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/sqlalchemy/ext/mutable.py b/lib/sqlalchemy/ext/mutable.py index 1ae5aee8b..06c46a9df 100644 --- a/lib/sqlalchemy/ext/mutable.py +++ b/lib/sqlalchemy/ext/mutable.py @@ -502,8 +502,14 @@ class MutableBase: def unpickle(state, state_dict): if "ext.mutable.values" in state_dict: - for val in state_dict["ext.mutable.values"][key]: - val._parents[state] = key + collection = state_dict["ext.mutable.values"] + if isinstance(collection, list): + # legacy format + for val in collection: + val._parents[state] = key + else: + for val in state_dict["ext.mutable.values"][key]: + val._parents[state] = key event.listen(parent_cls, "load", load, raw=True, propagate=True) event.listen( |