"No response has been set. Is this being used in an async call that was not returned as a promise to the intent handler?" 使用 js

Question

这是生成错误的代码，调用此 Intent 时生成的实现响应是 "No response has been set. Is this being used in an async call that was not returned as a promise to the intent handler?"我应该如何更正它？

app.intent('getCrypto', (conv,{crypto="ethereum",cryptoactions="price"}) =>{
     fetch('https://api.coinmarketcap.com/v1/ticker/').then(response => {
       return response.json();
     }).then(data => {
          for (let i = 0; i < data.length - 1; i++) {
            if (data[i].id === "bitcoin")
               conv.data.price=data[i].price_usd;
               conv.ask(`${conv.data.price} is the current value of ${crypto}`);
               return response.json();
          }

     }).catch(err => {
          return conv.ask(`${cryptoactions} of ${crypto} is not available. Would you like to know about another one?`);
     });
});

Answer 1

错误消息描述了确切的问题"Is this being used in an async call that was not returned as a promise to the intent handler?"

您应该 return 来自意图处理程序的异步调用。因此，在调用 fetch 之前添加 return 应该可以解决问题。

Answer 2

要在 Dialogflow API version 2、

中避免此问题

你必须return Promise，你愿意使用这些结构吗？

app.intent('getCrypto', conv => {
    // I - MUST HAVE PROMISE IN HERE
    return new Promise(function (resolve, reject) {
        fetch('https://api.coinmarketcap.com/v1/ticker/')
            .then(res => {
                ...

                resolve();
            })
            .catch(error => {
                console.log(error);

                reject(error)
            });
    })
    .then(function (result) {
        console.log(result);

        // II - MUST HAVE THIS RESPONSE
        // conv.ask(new SimpleResponse("..."));
        conv.close(new SimpleResponse(texts.goodbye));
    }, function (error) {

    });
})

"No response has been set. Is this being used in an async call that was not returned as a promise to the intent handler?" 使用 js

"No response has been set. Is this being used in an async call that was not returned as a promise to the intent handler?" using js

javascript

fetch

node.js

actions-on-google

dialogflow-es