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Refs #26226 -- Removed support for related manager classes without a _apply_rel_filters() method.

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Per deprecation timeline.
This commit is contained in:
Tim Graham 2016-12-31 11:36:43 -05:00
parent 5139832398
commit b70094f040
3 changed files with 4 additions and 40 deletions
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15
django/db/models/query.py
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@ -22,7 +22,6 @@ from django.db.models.functions import Trunc
from django.db.models.query_utils import InvalidQuery, Q
from django.db.models.sql.constants import CURSOR
from django.utils import six, timezone
from django.utils.deprecation import RemovedInDjango20Warning
from django.utils.functional import cached_property, partition
from django.utils.version import get_version
@ -1613,19 +1612,7 @@ def prefetch_one_level(instances, prefetcher, lookup, level):
else:
manager = getattr(obj, to_attr)
if leaf and lookup.queryset is not None:
try:
apply_rel_filter = manager._apply_rel_filters
except AttributeError:
warnings.warn(
"The `%s.%s` class must implement a `_apply_rel_filters()` "
"method that accepts a `QuerySet` as its single "
"argument and returns an appropriately filtered version "
"of it." % (manager.__class__.__module__, manager.__class__.__name__),
RemovedInDjango20Warning,
)
qs = manager.get_queryset()
else:
qs = apply_rel_filter(lookup.queryset)
qs = manager._apply_rel_filters(lookup.queryset)
else:
qs = manager.get_queryset()
qs._result_cache = vals