Getting distance in django with out a geoDjango backend (PostGIS, etc...)

Question

I don't want to go through the pain of installing PostGIS so can I get places ordered by distance from an origin using django.contrib.gis?

models.py

from django.contrib.gis.geos import Point

class Place(models.Model):
    name = models.CharField(max_length=50)
    lat = models.FloatField()
    lng = models.FloatField()

    def point(self):
        return Point(self.lat,self.lng)

views.py

origin = Point(lookup_lat,lookup_lng)
places = Place.objects.filter(point__distance_lte=(origin, D(mi=10))).distance(origin).order_by('distance')[:20]

I've tried this but I get Cannot resolve keyword 'point' into field.

Forge · Answer 1 · 2014-03-20T17:59:38.527

0

Installing the package libgeos-dev should solve this error in some of the cases.

edited Mar 20 '14 at 17:59

answered Mar 20 '14 at 17:00

Forge

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even just a `Place.objects.filter(point__distance_lte=(origin, D(mi=10)))` wont work :(. I don't think it likes `point` as a function – Robert Johnstone Mar 20 '14 at 17:17
same as the one in the question – Robert Johnstone Mar 20 '14 at 17:35
ended up using `__gt` & `__lt` on the lat,lng in my db instead (i.e. getting all the locations inside a box) – Robert Johnstone Jun 19 '14 at 11:19

Getting distance in django with out a geoDjango backend (PostGIS, etc...)

1 Answers1