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Fixed #8036 -- Fixed a case when attempting to traverse non-existent related

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instances. We weren't skipping the correct output columns before processing
subsequent existing related instances. Thanks to mrmachine for the test case.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@8598 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Malcolm Tredinnick 2008-08-26 20:44:20 +00:00
parent 6056ab1bee
commit 8f5234d801
2 changed files with 45 additions and 3 deletions
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8
django/db/models/query.py
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@ -794,8 +794,9 @@ def get_cached_row(klass, row, index_start, max_depth=0, cur_depth=0,
fields = row[index_start:index_end]
if not [x for x in fields if x is not None]:
# If we only have a list of Nones, there was not related object.
return None, index_end
obj = klass(*fields)
obj = None
else:
obj = klass(*fields)
for f in klass._meta.fields:
if not select_related_descend(f, restricted, requested):
continue
@ -807,7 +808,8 @@ def get_cached_row(klass, row, index_start, max_depth=0, cur_depth=0,
cur_depth+1, next)
if cached_row:
rel_obj, index_end = cached_row
setattr(obj, f.get_cache_name(), rel_obj)
if obj is not None:
setattr(obj, f.get_cache_name(), rel_obj)
return obj, index_end