Wit.ai不解析数据以进行聊天响应

Question

我在修改wit.ai的messenger.js on GitHub时遇到了一些问题。我添加了一些API调用来获取实时天气，但是我在将结果输入机器人的回复(context.forecast)时遇到了困难。context.forecast线似乎无法“看到”我的天气数据。

最相关的一行是：

context.forecast = 'Todays forecast is: ' + hourlyWeather +' in ' + location;

hourlyWeather有“直到今天晚上的小雨”等数据。但机器人的回答却忽略了这一点。

这是相关的代码，我希望我只是在错误的地方/顺序，因为我是新的节点。我很感激你的帮助。

// Our bot actions
const actions = {
send({sessionId}, {text}, request) {
//const {context, entities} = request;
// Our bot has something to say!
// Let's retrieve the Facebook user whose session belongs to
const recipientId = sessions[sessionId].fbid;

if (recipientId) {
  // Yay, we found our recipient!
  // Let's forward our bot response to her.
  // We return a promise to let our bot know when we're done sending
  return fbMessage(recipientId, text)
  .then(() => null)
  .catch((err) => {
    console.error(
      'Oops! An error occurred while forwarding the response to',
      recipientId,
      ':',
      err.stack || err
    );
  });
} else {
  console.error('Oops! Couldn\'t find user for session:', sessionId);
  // Giving the wheel back to our bot
  return Promise.resolve()
 }
},



// You should implement your custom actions here
  // See https://wit.ai/docs/quickstart



//Problems start here. ----------------

  getForecast({context, entities}) {
    return new Promise(function(resolve, reject) {
      var location = firstEntityValue(entities, 'location')
      if (location) {
         // we should call a weather API here



        //API call to convert city name to longitude latitude
        const requestw = require('request'),url = 'http://nominatim.openstreetmap.org/search?q='+location+'&format=json'

        request(url, (error, response, body)=> {
          if (!error && response.statusCode === 200) {
            const fbResponse = JSON.parse(body)
            //console.log("Got a response: ", fbResponse)
            //convert JSON to array
            var arr = [];
            for(var x in fbResponse){
          arr.push(fbResponse[x]);
        }
            //find latitude and longitude in array and store for later weather api call
            if(arr[0].hasOwnProperty('lat')){
            var lat = arr[0].lat; 
        }
            if(arr[0].hasOwnProperty('lon')){
            var lon = arr[0].lon; 
        }
            console.log(lat, lon)

            //API call for weather status
            forecast.get([lat, lon], function(err, weather) {
            if(err) return console.dir(err);
            //console.dir(weather);
//Store weekly and daily report - Cant get to show up in forecast string. --------------
                console.log(weather.hourly.summary)
            var hourlyWeather = weather.hourly.summary;
                console.log(weather.daily.summary)
            var dailyWeather = weather.daily.summary;

            });
          } else {
            console.log("Got an error while grabbing coordinates of city: ", error, ", status code: ", response.statusCode)
          }
        })

//Cant get hourlyWeather or dailyWeather to show here. Location works fine. Have tried declaring the variables elsewhere. -----------
        //context.forecast = hourlyWeather;
        context.forecast = 'Todays forecast is: ' + hourlyWeather +' in ' + location;



        delete context.missingLocation;
      } else {
        context.missingLocation = true;
        delete context.forecast;
      }
      return resolve(context);
    });
  }, 
};

机器人的答复只写着“今天的预测是:在亚特兰大”。

Answer 1

您需要针对上下文存储hourlyWeather。

var hourlyWeather = weather.hourly.summary;
context.hw = hourlyWeather;

然后通过上下文访问天气。

context.forecast = 'Todays forecast is: ' + context.hw +' in ' + location;