Created
January 19, 2020 11:42
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Django Haversine formula to find the Nearest Locations.
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| def get_nearest_cities(lat, lng, in_radius): | |
| earth_radius = 6371 | |
| cities = Location.objects.filter().annotate( | |
| distance=earth_radius * ACos(Cos(Radians(lat)) * Cos(Radians("latitude")) * Cos( | |
| Radians("longitude") - Radians(lng)) + Sin(Radians(lat)) * Sin( | |
| Radians('latitude')))).filter(distance__lt=in_radius).order_by("distance") | |
| return cities |
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