如何在MongoDb中插入時指定BSON類型的座標？

Question

我有以下document，我想在其上創建一個2dsphere index，但coordinates field必須是integer BSON type才能這樣做。但來自client的data type的座標爲string。

因此，我想在插入到MongoDb之前將其更改爲整數，以便我可以在之後創建索引。 我該怎麼做？

user.saveSubscriber = (jSubscriberData, fCallback) => { 
    var jSubscriber = { 
     email: jSubscriberData.txtEmail, 
     firstName: jSubscriberData.txtName, 
     lastName: jSubscriberData.txtLastName, 
     address: { 
      type: "Point", 
      coordinates: [jSubscriberData.lng, jSubscriberData.lat] 
     } 
    } 
    global.db.collection('subscribers').insertOne(jSubscriber, (err, jResult) => { 

     if (err) { 
      var jError = { "status": "error", "message": "ERROR -> saveSubscriber -> user.js -> 001" } 
      return fCallback(false, jError) 
     } 
     var jOk = { "status": "ok", "message": "user.js -> subscriber saved -> 000" } 
     return fCallback(false, jOk) 
    }) 
} 

Answer 1

只是解析存儲之前浮動字符串使用parseFloat()

user.saveSubscriber = (jSubscriberData, fCallback) => { 
var jSubscriber = { 
    email: jSubscriberData.txtEmail, 
    firstName: jSubscriberData.txtName, 
    lastName: jSubscriberData.txtLastName, 
    address: { 
     type: "Point", 
     coordinates: [parseFloat(jSubscriberData.lng), parseFloat (jSubscriberData.lat)] 
    } 
} 
global.db.collection('subscribers').insertOne(jSubscriber, (err, jResult) => { 

    if (err) { 
     var jError = { "status": "error", "message": "ERROR -> saveSubscriber -> user.js -> 001" } 
     return fCallback(false, jError) 
    } 
    var jOk = { "status": "ok", "message": "user.js -> subscriber saved -> 000" } 
    return fCallback(false, jOk) 
}) 

}