How to find all mongoDB documents based on geolocation - mongodb

Question

I'm using the react geosuggest package to save locations of my events in MongoDB. The package takes data from Google places and each time I store it, it gets stored like this:
"_id": "vvagbSbEginyrQGK8",
"name": "test3",
"googleLocation": {
"label": "Testaccio, Roma, Italia",
"placeId": "ChIJE47T5i5gLxMRhiCxCUAFq4Q",
"isFixture": false,
"gmaps": {
"address_components": [
{
"long_name": "Monte Testaccio",
"short_name": "Monte Testaccio",
"types": [
"establishment",
"natural_feature"
]
},
{
"long_name": "Rome",
"short_name": "Rome",
"types": [
"locality",
"political"
]
},
{
"long_name": "Rome",
"short_name": "Rome",
"types": [
"administrative_area_level_3",
"political"
]
},
{
"long_name": "Metropolitan City of Rome",
"short_name": "RM",
"types": [
"administrative_area_level_2",
"political"
]
},
{
"long_name": "Lazio",
"short_name": "Lazio",
"types": [
"administrative_area_level_1",
"political"
]
},
{
"long_name": "Italia",
"short_name": "IT",
"types": [
"country",
"political"
]
},
{
"long_name": "00153",
"short_name": "00153",
"types": [
"postal_code"
]
}
],
"formatted_address": "Monte Testaccio, 00153 Rome, Italia",
"geometry": {
"location": {},
"location_type": "APPROXIMATE",
"viewport": {
"f": {
"b": 41.87460301970851,
"f": 41.87730098029151
},
"b": {
"b": 12.474345019708494,
"f": 12.477042980291571
}
}
},
"place_id": "ChIJE47T5i5gLxMRhiCxCUAFq4Q",
"types": [
"establishment",
"natural_feature"
]
},
"location": {
"lat": 41.87595200000001,
"lng": 12.475693999999976
}
}
I've tried a lot of different queries with the mongodb near query, but I can't figure it out. Anyone know about a query that will for example find all documents within 10000 meter based on longitude and latitude that I send in.

Answer 1

According to the current version of mongodb, it has Gospatial query operators and you can achieve what you need after modifying the collection which contains the places as following:
First you should create "2dsphere" index for the collection, let's name it "places" as following:
db.places.createIndex( { loc : "2dsphere" } );
/*
the document should contain "loc" property as following:
{
loc : { type: "Point", coordinates: [ -73.88, 40.78 ] },
//+ the other needed properties.
}
*/
Then for a specific origin and distance range, you can apply the following query:
db.places.find(
{
loc:
{ $near :
{
$geometry: { type: "Point", coordinates: [ -73.9667, 40.78 ]
//the origin point.
},
$minDistance: 1000, //in meter
$maxDistance: 5000 //in meter
}
}
}
)
Note that the coordinates ordered as following [long,lat].
for more information you can check the mongodb document in the following link:
2Dshpere indexes
Geospatial operators