我想将我的 mongodb 集合从 2d 修改为 2dsphere。 我的 db.users 中有这个结构:
{
"_id" : "1c6930387123e960eecd65e8ade28488",
"interests" : [
{
"_id" : ObjectId("56a8b2a72f2c2a4c0250e896"),
"coordinates" : [-3.6833, 40.4]
}
],
}
我想要这样的东西:
{
"_id" : "1c6930387123e960eecd65e8ade28488",
"interests" : [
{
"_id" : ObjectId("56a8b2a72f2c2a4c0250e896"),
"loc":{
"type":"Point",
"coordinates" : [-3.6833, 40.4]
}
}
],
}
我试过这个:
db.users.update( {interests:{$elemMatch:{coordinates : { $exists: true } }}}, { $set: { 'interests.$.place':{"type":"Point", "coordinates":'interests.$.coordinates'} } }, { upsert: false, multi: false });
显然,它在字面上插入“'interests.$.coordinates'
并在节点中尝试了这个:
users.find({interests:{$elemMatch:
{coordinates :
{ $exists: true } }}} ,
{"interests.coordinates":1,"interests._id":1,"_id":0 }).forEach( function( doc ){
users.update( {interests:
{$elemMatch:
{_id : doc.interests[0]['_id'] }}},
{ $set: { 'interests.$.loc':{"type":"Point", "coordinates":doc.interests[0]['coordinates']} } },
{ upsert: false, multi: false },function(err, numberAffected, rawResponse) {
var modified=numberAffected.result.nModified;
console.log(modified)
});
});
但是坐标被插入了混合值。
想法?
谢谢!!