☁ Cloud Firestore with Actions on Google - Part 2/2

Hello AoG Devs!!

In this little tutorial, I’ll show you how to read information from a Cloud Firestore and use it to dynamically generate responses for DialogFlow fulfillment.

I'll recommend you to read Part 1 of this post. Click here

Prerequisite:

1. Database with the collection and some documents.
2. Basic knowledge of Javascript

I'll take the example of "DevFest Mumbai Action" which I've built with the help of Team GDG MAD.

So without wasting the time, Let's get started with the steps!

Step 1:

Create an intent inside the Dialogflow, we'll use this intent to call the function.

I've created the speakerInformation intent: This intent will read the data for a particular speaker from the database.

Here, the speaker name will be stored in person parameter.
Don't forget to Enable the webhook for this intent

Step 2:

Firestore with collection and few documents.

The following image shows the collection speakers and document for each speaker.

Step 3:

Let's code!

• I've used ActionsSDK in this action. So We'll import the necessary packages first.

const {
  dialogflow,
  Image,
  BasicCard,
  Button,
} = require('actions-on-google')

const functions = require('firebase-functions')
const { firestore } = require('firebase-admin')
const domain = 'https://mumbai-devfest19.firebaseapp.com'
const app = dialogflow({ debug: false })

• Create a function to handle speakerInformation intent.

app.intent('speakerInformation', async (conv, param, option) => {
.
.
.
}

• Create a variable to store parameter (User Input)

  const option_intent = conv.contexts.get('actions_intent_option');
  const option_text = option_intent.parameters.text;
  const speakerRef = await firestore().collection('speakers').where('name', '==', option_text).get()

• Loop to visit each and every document. doc variable will store the document.

speakerRef.forEach((doc) => {
    const data = doc.data() // Document data stored in _data_ variable
    conv.ask(`Meet the Speaker`);

• Card added to display the data

    conv.ask(new BasicCard({
          text: data.bio,   
          subtitle: data.title,
          title: data.name,
          image: new Image({
            url: data.photoUrl,
            alt: `${data.name} photo`,
          }),
          display: 'CROPPED',
          buttons: new Button({
              title: 'Visit Profile',
              url: `${domain}/speakers/${data.id}`,
          }),
    }));

• exports the app

exports.fulfillment = functions.https.onRequest(app)

Complete code: Github

Output:

Want to explore Devfest Mumbai action? Just say "Hey Google, Talk to Devfest Mumbai"

This is it! You can now create dynamic responses in the DialogFlow fulfillment.
Learn More: Docs

Share your experience, doubts in the comments or connect with me on Twitter💫