如何通过 Dialogflow 中的内联编辑器将 Dialogflow 连接到 Cloud Firestore？

Posted 2023-03-08

【中文标题】如何通过 Dialogflow 中的内联编辑器将 Dialogflow 连接到 Cloud Firestore？

【英文标题】：How to connect Dialogflow to Cloud Firestore via the Inline Editor in Dialogflow?

【发布时间】：2019-01-12 12:17:09

【问题描述】：

我有一个 Cloud Firestore 数据库，其中存储了 2017 年英格兰所有城市的居民数量。

然后我有一个 Dialogflow。每当我将一个城市的名称告诉 Dialogflow 时，我希望它从 Firestore 中获取该城市的居民数量并将其返回给 Dialogflow。

具体来说，我想通过内联编辑器来实现它。

问题：为了实现这一点，我需要在下面的代码中添加哪些代码行？

这是我在 Dialogflow > Fulfillment > index.js 的内联编辑器中编写的代码：

'use strict';

const functions = require('firebase-functions');
const firebaseAdmin = require('firebase-admin');
const WebhookClient = require('dialogflow-fulfillment');
const Card, Suggestion = require('dialogflow-fulfillment');

const App = require('actions-on-google').DialogflowApp;

process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => 
  const agent = new WebhookClient( request, response );
  console.log('Dialogflow Request headers: ' + JSON.stringify(request.headers));
  console.log('Dialogflow Request body: ' + JSON.stringify(request.body));

  function welcome(agent) 
    agent.add(`Hello and welcome!`);
  

  function fallback(agent) 
    agent.add(`I didn't understand`);
    agent.add(`I'm sorry, can you try again?`);



  let intentMap = new Map();
  intentMap.set('Default Welcome Intent', welcome);
  intentMap.set('Default Fallback Intent', fallback);

  agent.handleRequest(intentMap);
);

【参考方案1】：

以下是一些示例代码，展示了如何将 Firebase 的 Firestore 数据库连接到 Firebase 函数上的 Dialogflow 实现托管：

'use strict';

const functions = require('firebase-functions');
const admin = require('firebase-admin');
const WebhookClient = require('dialogflow-fulfillment');

process.env.DEBUG = 'dialogflow:*'; // enables lib debugging statements
admin.initializeApp(functions.config().firebase);
const db = admin.firestore();

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => 
  const agent = new WebhookClient( request, response );

  function writeToDb (agent) 
    // Get parameter from Dialogflow with the string to add to the database
    const databaseEntry = agent.parameters.databaseEntry;

    // Get the database collection 'dialogflow' and document 'agent' and store
    // the document  entry: "<value of database entry>" in the 'agent' document
    const dialogflowAgentRef = db.collection('dialogflow').doc('agent');
    return db.runTransaction(t => 
      t.set(dialogflowAgentRef, entry: databaseEntry);
      return Promise.resolve('Write complete');
    ).then(doc => 
      agent.add(`Wrote "$databaseEntry" to the Firestore database.`);
    ).catch(err => 
      console.log(`Error writing to Firestore: $err`);
      agent.add(`Failed to write "$databaseEntry" to the Firestore database.`);
    );
  

  function readFromDb (agent) 
    // Get the database collection 'dialogflow' and document 'agent'
    const dialogflowAgentDoc = db.collection('dialogflow').doc('agent');

    // Get the value of 'entry' in the document and send it to the user
    return dialogflowAgentDoc.get()
      .then(doc => 
        if (!doc.exists) 
          agent.add('No data found in the database!');
         else 
          agent.add(doc.data().entry);
        
        return Promise.resolve('Read complete');
      ).catch(() => 
        agent.add('Error reading entry from the Firestore database.');
        agent.add('Please add a entry to the database first by saying, "Write <your phrase> to the database"');
      );
  

  // Map from Dialogflow intent names to functions to be run when the intent is matched
  let intentMap = new Map();
  intentMap.set('ReadFromFirestore', readFromDb);
  intentMap.set('WriteToFirestore', writeToDb);
  agent.handleRequest(intentMap);
);

这来自位于此处的 Dialogflow 的 Firestore 示例：https://github.com/dialogflow/fulfillment-firestore-nodejs