DoctrineMongo near查詢

Question

我有symfony 2 + doctrineMongo，我試圖使用地理空間查詢 - >附近，但似乎這個查詢不起作用。總是返回一個空數組。

我遵循這個指南：http://www.doctrine-project.org/docs/mongodb_odm/1.0/en/reference/geospatial-queries.html

而且我有這個疑問在我的倉庫：

$this->createQueryBuilder() 
      ->field('coordinates')->near($longitude, $latitude) 
      ->getQuery() 
      ->execute(); 

有錯誤嗎？我該如何解決它？

我的地方的findAll：

db.Place.find(); 

{ "_id" : ObjectId("4e4b82df3eee4f7e2c000000"), "coordinates" : { "latitude" : 23.1, "longitude" : 23.23 }, "name" : "Opium Mar" } 

{ "_id" : ObjectId("4e5769f43eee4fc002000000"), "name" : "Sutton club", "coordinates" : { "latitude" : 2, "longitude" : 1 } } 

{ "_id" : ObjectId("4e5cf2173eee4fc202000008"), "name" : "Scorpia", "coordinates" : { "latitude" : 23, "longitude" : 22 } } 

這是我的索引：

db.system.indexes.find(); 

{ "name" : "_id_", "ns" : "kzemos.User", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.Place", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.Party", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.Friend", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.UserParty", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.Invite", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.Photo", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.Group", "key" : { "_id" : 1 }, "v" : 0 } 

{ "name" : "_id_", "ns" : "kzemos.places", "key" : { "_id" : 1 }, "v" : 0 } 

{ "_id" : ObjectId("4e5deaced3c5c27e84059447"), "ns" : "kzemos.places", "key" : { "loc" : "2d" }, "name" : "loc_", "bits" : 26 } 

{ "_id" : ObjectId("4e5dead9d3c5c27e84059448"), "ns" : "kzemos.places", "key" : { "coordinates" : "2d" }, "name" : "coordinates_", "bits" : 26 }` 

當我使用蒙戈外殼不久的查詢我收到此錯誤：

db.Place.find({ coordinates : { $near : [50,50] } }) 

error: { 
     "$err" : "can't find special index: 2d for: { coordinates: { $near: [ 50.0, 50.0 ] } }", 
     "code" : 13038 
} 

謝謝您！

Answer 1

你需要像它在這裏解釋http://www.mongodb.org/display/DOCS/Geospatial+Indexing