如何根据用户在 Django 中的位置过滤呈现给用户的帖子？

Question

I'm building a Django social networking site, so I basically want to show posts in news feed in a way like if someone is in New York, he should get posts from fellow network users and possibly nearby places. How can I achieve this. Any help is appreciated

Answer 1

Have a look at the GIS QuerySet documentation pages in the Django docs: https://docs.djangoproject.com/en/4.0/ref/contrib/gis/geoquerysets/

If you have latitudes & longitudes stored as a geometry field, you can use dwithin to filter users within a certain distance:

within: Returns models where the distance to the geometry field from the lookup geometry are within the given distance from one another. Note that you can only provide Distance objects if the targeted geometries are in a projected system. For geographic geometries, you should use units of the geometry field (eg degrees for WGS84).

Example: Zipcode.objects.filter(poly__dwithin=(geom, D(m=5)))