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| from itertools import imap | |
| from collections import namedtuple | |
| from django.db.models.query import QuerySet, ValuesQuerySet | |
| class NamedTuplesQuerySet(ValuesQuerySet): | |
| def iterator(self): | |
| # Purge any extra columns that haven't been explicitly asked for | |
| extra_names = self.query.extra_select.keys() | |
| field_names = self.field_names | |
| aggregate_names = self.query.aggregate_select.keys() | |
| names = extra_names + field_names + aggregate_names | |
| tuple_cls = namedtuple('%sTuple' % self.model.__name__, names) | |
| # NOTE: we are not reordering fields here, | |
| # so they can go not in that order as in .namedtuples args | |
| # if extra or aggregates are used. | |
| results_iter = self.query.get_compiler(self.db).results_iter() | |
| return imap(tuple_cls._make, results_iter) | |
| def namedtuples(self, *fields): | |
| return self._clone(klass=NamedTuplesQuerySet, setup=True, _fields=fields) | |
| QuerySet.namedtuples = namedtuples |
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