Question

我一直在尝试一个我正在致力于开发Food聊天机器人功能的项目。我目前正在做的是执行一种方法，供用户购买存储在Firebase实时数据库中的订单。

该方法被设置为actionMap的方法，并且actionMap链接到一个意图，该意图用于了解何时调用该方法以及获取参数。

我当前的方法是通过检查用户的参考路径并执行一个.forEach方法，对用户在数据库中的存在和状态进行简单检查，然后通过ID识别用户要购买的订单是否存在。检查找到的每个订单，并查看其父文件夹名称以检查其是否与用户的订单ID相匹配。我的代码如下：

const MakePurchaseACTION = 'Make Purchase';


 function makePurchase(app){

let email = parameter.email;
let orderId = parameter.orderId;
var currDate = currDateGenerator();
var name = email.split(".com");

//Check if User exists first in database
var userRef = database.ref().child('user/' + name); 
        return userRef.once('value').then(function(snapshot) {

          if (snapshot.exists()) { 
            let statusRetrieved = snapshot.child('Status').val();

            //Check if user's status in database is signed in.
            if (statusRetrieved == "Signed In") {
              var orderRef = database.ref().child('order/' + name);

              //Check the order table for the user.
                return orderRef.once('value').then(function(orderSnapshot){

                  let orderVal = orderSnapshot.val();
                  console.log(orderVal);

                  //Check through every child for the matching id.
                  orderSnapshot.forEach(function(childSnapshot) {
                    let orderIdFound = childSnapshot.key;
                    //let cost = childSnapshot.child('Cost').val();
                    console.log(orderIdFound);
                    if(orderId == orderIdFound) {
                      let eateryName = childSnapshot.child('Eatery').val();
                      let eateryLocation = childSnapshot.child('EateryLocation').val();
                      let deliveryAddress = childSnapshot.child('DeliveryAddress').val();
                      let orderItem = childSnapshot.child('OrderItem').val();
                      let quantity = childSnapshot.child('Quantity').val();
                      let cost = childSnapshot.child('Cost').val();

                       var purchaseRef = database.ref().child('purchase/' + name + "/" + currDate  + "/" + orderId);
                       purchaseRef.set({
                         "Eatery" : eateryName,
                         "EateryLocation" : eateryLocation,
                         "DeliveryAddress": deliveryAddress,
                         "OrderItem" : orderItem,
                         "Quantity": quantity,
                         "Cost": cost,
                         "DateCreated": currDate 
                       });

                      app.add("You have successfully purchased Order " + orderId);
                    } else {
                      app.add("There is no order with that id.");
                    }

                  });

                });
          } else {
            app.add("You need to be signed in before you can order!"); 
            }
          }
          else {
            app.add("Sorry pal you don't exist in the database.");
          }
        });
}



actionMap.set(MakePurchaseACTION, makePurchase);

在检查了一些Firebase日志后

Firebase Logs screenshot here

Firebase Realtime Database Order Table Sample

我发现该方法实际上完成了Purchase table sample，但是我的对话流返回，并指出以下错误：错误：未为平台定义任何响应：未定义，并向用户显示“不可用”。我的问题是如何解决这个错误？

Dialogflow Firebase实时数据库获取错误：未为平台定义响应：未定义，但方法仍会通过

0 个答案: