mongomapper地理空间“内"查询 [英] mongomapper geospatial 'within' query

问题描述

我正在尝试使用mongomapper进行内部"查询.当我在shell中执行命令时，一切正常:

I'm trying to do a 'within' query using mongomapper. When I execute the command in the shell everything works fine:

box = [[32.476750,-117.246094],[32.850173,-116.806641]]
db.locations.find({"location" : {"$within" : {"$box" : box}}})
// Bunch of results

但是，当我在Rails控制台中运行相同代码时，却显示为nil:

However, when I run the same in the rails console I get nil:

box = [[32.476750,-117.246094],[32.850173,-116.806641]]
Location.find(:location => {"$within" => {"$box" => box}})
 => nil 

如果我执行Location.first，我将获得一个位置，因此我知道我指向的是正确的数据库集合.我的mongomapper查询返回0个结果怎么办?

If I do Location.first I get a location back so I do know that I'm pointing at the correct db collection. What am I doing wrong with my mongomapper query that's returning 0 results?

推荐答案

嗯，我知道了.我没有使用查找"，而是使用了"where".现在，我又得到了正确的结果.

Ah, I figured it out. Instead of using 'find' I used 'where' instead. Now I'm getting the correct result set back.

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