Geospatial search

[12102man]

Hey! Thank you for a cool library for elasticsearch! I'm doing my university project with your lib and I faced with the problem, that there's no example of geospatial search. I have the following structure: "mappings": { "doc": { "properties": { "address": { "type": "text" }, "lat": { "type": "double" }, "lon": { "type": "double" } }

My question is how to perform a search and how to create GeoPoint attribute. Thank you!

[ogiogi93]

Sorry for replying 🙇

This is an example to use the geospatial search

documents.py

from django.db import models
from django_elasticsearch_dsl import Document, fields
from django_elasticsearch_dsl.registries import registry

class Hotel(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255, null=False)
    address = models.CharField(max_length=512, null=False)
    lat = models.DecimalField(max_digits=9, decimal_places=6, null=False)
    lng = models.DecimalField(max_digits=9, decimal_places=6, null=False)

    class Meta:
        db_table = 'hotels'
        managed = True

    @property
    def location(self):
        return [self.lng, self.lat]

@registry.register_document
class HotelDocument(Document):
    name = fields.TextField()
    address = fields.TextField()
    location = fields.GeoPointField()

    class Index:
        name = 'hotels'

    class Django:
        model = Hotel

search.py

from elasticsearch_dsl import Q

from .documents import HotelDocument

def geo_search(lat, lng, distance):
    q = Q('geo_distance', distance='{}km'.format(distance), location=[lng, lat])
    s = HotelDocument.search()
    s = s.query(q)

    response = s.execute()

you also could check elasticsearch_dsl official site to understand how to search by es https://elasticsearch-dsl.readthedocs.io/en/latest/search_dsl.html

[alaminopu]

@ogiogi93 Thanks for your example. Maybe it can be added to the documentation?