MultiPolgyon search on MongoDB - node.js

Question

I can't seem to figure this out and would appreciate any and all help.
I am using Node.js to make a query to MongoDB using the MultiPolygon filter. I am connecting to the native driver rather than using Mongoose because it doesn't seem like Mongoose supports MultiPolygon (absent in docs).
I receive a malformed query error though
GatheredListings.collection.find({
$and: [
{ 'rentAmount': { $gte: filterParameters.minPrice } },
{ 'rentAmount': { $lte: filterParameters.maxPrice } },
{ 'availabilityDate': { $gte: filterParameters.date } },
{ 'propertyType': filterParameters.propertyType },
{ 'bedrooms': filterParameters.bedrooms },
{ 'location': {
$geoWithin: {
$geometry: {
type : "MultiPolygon" ,
coordinates: [
geoArrayCollection
]
}
}}
}
]
}).toArray(function(err, properties) {
if (err || !properties)
{
console.log('err ' + err);
callback("No properties found", null);
}
else {
console.log('Number of properties retrieved: ' + properties.length);
callback(null, properties);
}
});`
The error is :
`err MongoError: Malformed geo query: { $geoWithin: { $geometry: { type: "MultiPolygon", coordinates: [ [ [ [ 43.77307711737606, -79.53517913818359 ], [ 43.79191518340848, -79.4476318359375 ], [ 43.75559702541283, -79.43887710571289 ], [ 43.7501411993079, -79.46514129638672 ], [ 43.7541091221655, -79.46943283081055 ], [ 43.75547303488856, -79.47406768798828 ], [ 43.75510106177428, -79.47715759277344 ], [ 43.75435710860915, -79.48093414306641 ], [ 43.75200119590339, -79.48282241821289 ], [ 43.74592499302, -79.48316574096678 ], [ 43.74282465186857, -79.49621200561523 ], [ 43.7404682852067, -79.49604034423828 ], [ 43.73873195568971, -79.49295043945312 ], [ 43.73525914559611, -79.49501037597655 ], [ 43.73538317799622, -79.50410842895508 ], [ 43.73290248118248, -79.51148986816406 ], [ 43.73947610307701, -79.51320648193359 ], [ 43.73649945803657, -79.52642440795898 ], [ 43.77307711737606, -79.53517913818359 ] ], [ [ 43.79203909839882, -79.4476318359375 ], [ 43.80380985089954, -79.39647674560547 ], [ 43.76334592336985, -79.38712120056152 ], [ 43.76179622406369, -79.39501762390137 ], [ 43.73600333614323, -79.43381309509277 ], [ 43.79203909839882, -79.4476318359375 ] ] ] ] } } }
Thank you

Answer 1

The MultiPolygon wasn't formatted correctly. You wanted this:
{
"type": "MultiPolygon",
"coordinates": [
[
[
[
43.77307711737606,
-79.5351791381836
],
[
43.79191518340848,
-79.4476318359375
],
[
43.75559702541283,
-79.43887710571289
],
[
43.7501411993079,
-79.46514129638672
],
[
43.7541091221655,
-79.46943283081055
],
[
43.75547303488856,
-79.47406768798828
],
[
43.75510106177428,
-79.47715759277344
],
[
43.75435710860915,
-79.4809341430664
],
[
43.75200119590339,
-79.48282241821289
],
[
43.74592499302,
-79.48316574096678
],
[
43.74282465186857,
-79.49621200561523
],
[
43.7404682852067,
-79.49604034423828
],
[
43.73873195568971,
-79.49295043945312
],
[
43.73525914559611,
-79.49501037597655
],
[
43.73538317799622,
-79.50410842895508
],
[
43.73290248118248,
-79.51148986816406
],
[
43.73947610307701,
-79.5132064819336
],
[
43.73649945803657,
-79.52642440795898
],
[
43.77307711737606,
-79.5351791381836
]
]
], // <--- missing this
[ // <--- missing this
[
[
43.79203909839882,
-79.4476318359375
],
[
43.80380985089954,
-79.39647674560547
],
[
43.76334592336985,
-79.38712120056152
],
[
43.76179622406369,
-79.39501762390137
],
[
43.73600333614323,
-79.43381309509277
],
[
43.79203909839882,
-79.4476318359375
]
]
]
]
}
but you were missing a layer of closing and opening of arrays that I have highlighted. The structures are big and nested so it's hard to eyeball what is going on; I'd suggest using tools like jsonlint and geojsonlint to contrast my corrected structure with your previous structure. It's the only way I was able to spot the problem.