问题
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
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
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?
回答1:
Ah, I figured it out. Instead of using 'find' I used 'where' instead. Now I'm getting the correct result set back.
来源：https://stackoverflow.com/questions/9853666/mongomapper-geospatial-within-query