Not an answer, I know, but did you try the GeoDjango group? http://groups.google.com/group/geodjango/topics
On Jan 17, 7:31 pm, "Robinson B. Heath" <t...@edenicconfluence.com> wrote: > 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.
