diff options
| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-11-20 12:15:57 -0500 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-11-22 13:12:27 -0500 |
| commit | 22d1f0706bd6a6742ad13f0bec75b04e705ff46b (patch) | |
| tree | 94fc9173cc8b4fdc064a4bd56b6ad1baa00183ea /lib/sqlalchemy/orm/util.py | |
| parent | 3ceb87da1a66f455444e69ba25ac18ea26d8751e (diff) | |
| download | sqlalchemy-22d1f0706bd6a6742ad13f0bec75b04e705ff46b.tar.gz | |
Warn for settings that don't work with viewonly=True
Setting persistence-related flags on :func:`.relationship` while also
setting viewonly=True will now emit a regular warning, as these flags do
not make sense for a viewonly=True relationship. In particular, the
"cascade" settings have their own warning that is generated based on the
individual values, such as "delete, delete-orphan", that should not apply
to a viewonly relationship. Note however that in the case of "cascade",
these settings are still erroneously taking effect even though the
relationship is set up as "viewonly". In 1.4, all persistence-related
cascade settings will be disallowed on a viewonly=True relationship in
order to resolve this issue.
Fixes: #4993
Change-Id: I4b607a96a7de2ffa15303a27fd93c162a681556d
Diffstat (limited to 'lib/sqlalchemy/orm/util.py')
| -rw-r--r-- | lib/sqlalchemy/orm/util.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/util.py b/lib/sqlalchemy/orm/util.py index c86993678..b96387c08 100644 --- a/lib/sqlalchemy/orm/util.py +++ b/lib/sqlalchemy/orm/util.py @@ -60,6 +60,8 @@ class CascadeOptions(frozenset): ) _allowed_cascades = all_cascades + _viewonly_cascades = ["expunge", "all", "none", "refresh-expire"] + __slots__ = ( "save_update", "delete", |