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
11981	Add custom Q-object (add_to_query) support to QuerySet.filter() and QuerySet.exclude()	Johannes Dollinger	nobody	"It would be nice if custom Q-objects could be transparently used in `filter()` and `exclude()` calls (if they provide an `__invert__()` method).

The following code illustrates the desired behaviour:
{{{
#!python

class QuerySet(models.query.QuerySet):
    def filter(self, *args, **kwargs):
        if not kwargs and len(args) == 1 and hasattr(args[0], 'add_to_query'):
            return self.complex_filter(args[0])
        return super(QuerySet, self).filter(*args, **kwargs)

    def exclude(self, *args, **kwargs):
        if not kwargs and len(args) == 1:
            return self.complex_filter(~args[0])
        return super(QuerySet, self).exclude(*args, **kwargs)

}}}
"	New feature	closed	Database layer (models, ORM)	dev	Normal	wontfix	complex_filter, add_to_query		Someday/Maybe	1	0	0	0	0	0