It has been a couple of weeks without a reply. Is there somewhere else I should post this or am I on my own?
Begin forwarded message: > From: "Robinson B. Heath" <t...@edenicconfluence.com> > Date: January 4, 2011 11:41:48 PM CST > To: django-users@googlegroups.com > Subject: PostGISAdapter error > > I am getting the following error when the queryset tries to generate the SQL: > "'str' object has no attribute 'ewkb'" > > Here is what I am doing that causes the problem: > shapes = Shape.objects.filter(geom__bboverlaps=bbx) > shape_info = shape_info.filter(shape__in=shapes) > > Models are: > class Shape(models.Model): > … > geom = models.PolygonField() > color = models.IntegerField() > > class ShapeInfo(models.Model): > … > name = models.CharField(max_length=25) > shape = models.ForeignKey(Shape) > > The code causing the problem seems to be: > > if (len(params) == 1 and params[0] == '' and lookup_type == 'exact' > and connection.features.interprets_empty_strings_as_nulls): > lookup_type = 'isnull' > value_annot = True > > Is this not an appropriate way to use this? > > Here is the stacktrace: > /Library/Python/2.6/site-packages/django/db/models/query.py in _result_iter > self._fill_cache() ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/query.py in _fill_cache > self._result_cache.append(self._iter.next()) ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/query.py in iterator > for row in compiler.results_iter(): ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/sql/compiler.py in > results_iter > for rows in self.execute_sql(MULTI): ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/sql/compiler.py in > execute_sql > sql, params = self.as_sql() ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/sql/compiler.py in as_sql > where, w_params = self.query.where.as_sql(qn=qn, > connection=self.connection) ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/sql/where.py in as_sql > sql, params = child.as_sql(qn=qn, connection=connection) > ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/sql/where.py in as_sql > sql, params = self.make_atom(child, qn, connection) ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/db/models/sql/where.py in make_atom > if (len(params) == 1 and params[0] == '' and lookup_type == 'exact' > ... > ▶ Local vars > /Library/Python/2.6/site-packages/django/contrib/gis/db/backends/postgis/adapter.py > in __eq__ > return (self.ewkb == other.ewkb) and (self.srid == other.srid) ... > ▼ Local vars > Variable Value > other > '' > self > <django.contrib.gis.db.backends.postgis.adapter.PostGISAdapter object at > 0x10663bf90> -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
