id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
19607	prefetch_related crash	av@…	nobody	"In file django/db/models/query.py line 1613, else statement sould not breaks an iteration, because in some queries obj_list is like [obj1, obj2, obj3] where obj2 has _prefetched_objects_cache, but obj3 has not.

So later in prefetch_one_level() we have  ""object has no attribute '_prefetched_objects_cache'"" error.

Code:
{{{
            for obj in obj_list:
                if not hasattr(obj, '_prefetched_objects_cache'):
                    try:
                        obj._prefetched_objects_cache = {}
                    except AttributeError:
                        # Must be in a QuerySet subclass that is not returning
                        # Model instances, either in Django or 3rd
                        # party. prefetch_related() doesn't make sense, so quit
                        # now.
                        good_objects = False
                        break
                else:
                    # We already did this list
                    break    <------ Line 1613 -------------- this one sould be changed to pass
}}}"	Bug	closed	Database layer (models, ORM)	1.4	Normal	fixed	prefetch prefetch_related	marc.tamlyn@…	Unreviewed	1	0	0	0	0	0