如何使用 api.ai 在 Firebase 中创建表答案

【问题标题】：How to create tables in firebase with api.ai如何使用 api.ai 在 Firebase 中创建表
【发布时间】：2019-05-21 15:38:50
【问题描述】：

我有一个关于对话流的问题。我想知道是否可以让代理在firebase数据库（firestore或realtime）中创建新字段或表我发现的所有代码都是关于更改表的值而不是创建它们。

我不知道从哪里开始，我已经完成了与服务器的集成，一切正常。

function writeToDb (agent) {
const databaseEntry = agent.parameters.databaseEntry;
const dialogflowAgentRef = db.collection('dialogflow').doc('agent');
return db.runTransaction(t => {
  t.set(dialogflowAgentRef, {entry: databaseEntry});
     return Promise.resolve('Write complete');

我需要代理创建新表或字段的说明

【问题讨论】：

在这段代码中，有一个简单的功能：在创建的字段中写入一个值。我的问题是代理如何在 firestore 或 realtime base 中创建表或字段。

标签： dialogflow-es

【解决方案1】：

Google 在 Github 上的 Dialogflow Firestore sample 演示了如何将 Dialogflow 连接到 Firestore 数据库。

查看下面的 writeToDb() 函数，并记住需要相同的依赖项：

'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);
});

【讨论】：