return self.filter(items__content_type__pk=ctype.pk,
items__object_id=obj.pk)
- def _get_usage(self, model, counts=False, min_count=None, extra_joins=None, extra_criteria=None, params=None, extra=None):
+ def _get_usage(self, model, counts=False, min_count=None, extra_joins=None, extra_criteria=None, params=None, extra=None, extra_tables=None):
"""
Perform the custom SQL query for ``usage_for_model`` and
``usage_for_queryset``.
SELECT DISTINCT %(tag_columns)s%(count_sql)s
FROM
%(tag)s
- INNER JOIN %(tagged_item)s
- ON %(tag)s.id = %(tagged_item)s.tag_id
+ INNER JOIN %(tagged_item)s AS %(tagged_item_alias)s
+ ON %(tag)s.id = %(tagged_item_alias)s.tag_id
INNER JOIN %(model)s
- ON %(tagged_item)s.object_id = %(model_pk)s
+ ON %(tagged_item_alias)s.object_id = %(model_pk)s
%%s
- WHERE %(tagged_item)s.content_type_id = %(content_type_id)s
+ WHERE %(tagged_item_alias)s.content_type_id = %(content_type_id)s
%%s
%(extra_where)s
- GROUP BY %(tag_columns)s, %(tag)s.id, %(tag)s.name
+ GROUP BY %(tag_columns)s, %(tag)s.id, %(tag)s.name%(extra_tables)s
%%s
ORDER BY %(tag)s.%(ordering)s ASC""" % {
'tag': qn(self.model._meta.db_table),
'tag_columns': tag_columns,
'count_sql': counts and (', COUNT(%s)' % model_pk) or '',
'tagged_item': qn(self.intermediary_table_model._meta.db_table),
+ 'tagged_item_alias': qn('_newtagging_' + self.intermediary_table_model._meta.db_table),
'model': model_table,
'model_pk': model_pk,
'extra_where': extra_where,
+ 'extra_tables': ''.join((', %s.id' % qn(table)) for table in extra_tables),
'content_type_id': ContentType.objects.get_for_model(model).pk,
}
extra_joins = ' '.join(queryset.query.get_from_clause()[0][1:])
where, params = queryset.query.where.as_sql()
+ extra_tables = queryset.query.extra_tables
if where:
extra_criteria = 'AND %s' % where
else:
extra_criteria = ''
- return self._get_usage(queryset.model, counts, min_count, extra_joins, extra_criteria, params, extra)
+ return self._get_usage(queryset.model, counts, min_count, extra_joins, extra_criteria, params, extra, extra_tables=extra_tables)
def related_for_model(self, tags, model, counts=False, min_count=None, extra=None):
"""