查询中的Mongodb $(Mongodb $within query)

 我正在尝试使用$within运算符在mongodb进行地理空间查询。 我有一个集合条目，其中包含一个位置字段： 
 
location: {
  bounds: {
    south_west: { lat: XX.XXXXXX, lng: XX.XXXXX },
    north_east: { lat: XX.XXXXXX, lng: XX.XXXXX }
  },
  center: {
    lat: XX.XXXXXX,
    lng: XX.XXXXXX
  }
}
 
 对于我的查询，我想让所有location.center都位于google.maps对象范围内的location.center 。 我有这样的事情： 
 
query = {}

var southWest = map.getBounds().getSouthWest();
southWest = [southWest.lat(), southWest.lng()];

var northEast = map.getBounds().getNorthEast();
northEast = [northEast.lat(), northEast.lng()];

query["location.center"] = { $within: { $box: [southWest, northEast] } }
 
 但我一直都会 
 
Exception from Meteor.flush: Error: Unrecognized key in selector: $within
at Error (<anonymous>)
at Function.LocalCollection._exprForConstraint (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:559:11)
at Function.LocalCollection._exprForOperatorTest (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:468:36)
at Function.LocalCollection._exprForKeypathPredicate (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:387:34)
at Function.LocalCollection._exprForSelector (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:307:36)
at Function.LocalCollection._compileSelector (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:284:24)
at new LocalCollection.Cursor (http://localhost:3000/packages/minimongo/minimongo.js?7f5131f0f3d86c8269a6e6db0e2467e28eff6422:71:39)
at LocalCollection.find (http://localhost:3000/packages/minimongo/minimongo.js?7f5131f0f3d86c8269a6e6db0e2467e28eff6422:57:10)
at _.extend.find (http://localhost:3000/packages/mongo-livedata/collection.js?3ef9efcb8726ddf54f58384b2d8f226aaec8fd53:155:34)
at Template.feed.feed_items (http://localhost:3000/client/modules/js/feed.js?5ed30ddbd861944b636dbe03c13cc80421258a5b:129:17) 
 
 我不确定如何继续。 使用简单的JSON.stringify（查询），我注意到查询就像是一样 
 
{"location.center":{"$within":{"$box":[[39.93623526127148,-75.63687337060549],[39.984129247435064,-75.57438862939455]]}}}
 
 无论如何，我可以阻止引号被$within和$box选择器包围？ 我相信这是我的例外被抛出的地方。 

I'm attempting to make a geospatial query in mongodb using the $within operator. I have a collection entry that has a location field which holds:
 
location: {
  bounds: {
    south_west: { lat: XX.XXXXXX, lng: XX.XXXXX },
    north_east: { lat: XX.XXXXXX, lng: XX.XXXXX }
  },
  center: {
    lat: XX.XXXXXX,
    lng: XX.XXXXXX
  }
}
 
For my query, I'd like to get all places with a location.center that falls within the bounds of the google.maps object. I have something like this:
 
query = {}

var southWest = map.getBounds().getSouthWest();
southWest = [southWest.lat(), southWest.lng()];

var northEast = map.getBounds().getNorthEast();
northEast = [northEast.lat(), northEast.lng()];

query["location.center"] = { $within: { $box: [southWest, northEast] } }
 
But I consistently get
 
Exception from Meteor.flush: Error: Unrecognized key in selector: $within
at Error (<anonymous>)
at Function.LocalCollection._exprForConstraint (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:559:11)
at Function.LocalCollection._exprForOperatorTest (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:468:36)
at Function.LocalCollection._exprForKeypathPredicate (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:387:34)
at Function.LocalCollection._exprForSelector (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:307:36)
at Function.LocalCollection._compileSelector (http://localhost:3000/packages/minimongo/selector.js?2373a18a9a4640513e41d7850f17f62f76b7c589:284:24)
at new LocalCollection.Cursor (http://localhost:3000/packages/minimongo/minimongo.js?7f5131f0f3d86c8269a6e6db0e2467e28eff6422:71:39)
at LocalCollection.find (http://localhost:3000/packages/minimongo/minimongo.js?7f5131f0f3d86c8269a6e6db0e2467e28eff6422:57:10)
at _.extend.find (http://localhost:3000/packages/mongo-livedata/collection.js?3ef9efcb8726ddf54f58384b2d8f226aaec8fd53:155:34)
at Template.feed.feed_items (http://localhost:3000/client/modules/js/feed.js?5ed30ddbd861944b636dbe03c13cc80421258a5b:129:17) 
 
And I'm unsure how to proceed. With a simple JSON.stringify(query) I've noticed that the query is coming out like 
 
{"location.center":{"$within":{"$box":[[39.93623526127148,-75.63687337060549],[39.984129247435064,-75.57438862939455]]}}}
 
Is there anyway I can prevent the quotes from being wrapped around the $within and $box selectors? I believe that's where my exception is being thrown from. 

原文：https://stackoverflow.com/questions/14262881