Question

我要发布一个带有Firestore的位置信息，并在单击按钮时将其数据保存到数据库中。每个按钮单击都会生成自动的DocumnetID，并希望同时将此ID保存到数据库中。

代码：


await firestore.collection("Table_Name").document().setData({
        "SpotLatLong":new GeoPoint(spotlat, spotlong) ,
        "spotName": placeNameController.text,
        "SpotImage":spotImage,
        "UserID":uid,
        "SpotActivity":spotActivity,
        "SpotDocumentID": firestore.collection("Table_Name").document().documentID.toString()//this line generates Different documentID, which is wrong
      }).then((onValue){
        StyleWidget.showToast(msg: "Created spot to the table");
        Navigator.pop(context);
        isLoading = false;
      });

Answer 1

String id= await firestore.collection("Table_Name").document().documentID().toString;

await firestore.collection("Table_Name").document(id).setData({
        "SpotLatLong":new GeoPoint(spotlat, spotlong) ,
        "spotName": placeNameController.text,
        "SpotImage":spotImage,
        "UserID":uid,
        "SpotActivity":spotActivity,
        "SpotDocumentID":id //this line generates Different documentID, which is wrong
      }).then((onValue){
        StyleWidget.showToast(msg: "Created spot to the table");
        Navigator.pop(context);
        isLoading = false;
      });

希望对此有所帮助

Answer 2

要以编程方式将新文档添加到文档ID中，如下所述，

// Your Firestore Database Reference
var tableReference = Firestore.instance.collection("Tables");

// Push a new ID every time like this
var ID = groupReference.document().documentID;

// Set Data to the new Document ID
await firestore.collection("Table_Name").**document(ID)**.setData({
        "SpotLatLong":new GeoPoint(spotlat, spotlong) ,
        "spotName": placeNameController.text,
        "SpotImage":spotImage,
        "UserID":uid,
        "SpotActivity":spotActivity,
        "SpotDocumentID": firestore.collection("AddSpot").document().documentID.toString()//this line generates Different documentID, which is wrong
      }).then((onValue){
        StyleWidget.showToast(msg: "Created spot to the table");
        Navigator.pop(context);
        isLoading = false;
      });

Answer 3

var docRef = await firestore.collection("Table_Name").document().setData({
        "SpotLatLong":new GeoPoint(spotlat, spotlong) ,
        "spotName": placeNameController.text,
        "SpotImage":spotImage,
        "UserID":uid,
        "SpotActivity":spotActivity,
        "SpotDocumentID": firestore.collection("AddSpot").document().documentID.toString()//this line generates Different documentID, which is wrong
      }).then((onValue){
        StyleWidget.showToast(msg: "Created spot to the table");
        Navigator.pop(context);
        isLoading = false;
      });

通过这种方式获取文档参考

docRef.documentID

如何在Flutter中使用Cloud Firestore发布期间获取当前自动生成的文档ID？

3 个答案: