FireBase-Demo

Source: https://firebase.google.com/docs/firestore/quickstart

Video: https://www.youtube.com/watch?v=2Vf1D-rUMwE

Step 1: Setting up Firebase

1. Create a project at https://console.firebase.google.com/u/0/
2. Create a databse from the Database Console
3. Go to General and start with the Web platform under Your Apps
4. npm install -g firebase-tools --save
5. Get config from Firebase SDK snippet and save in an environment file
6. In the database console, go to the rules tab and change false to true in line 5

Step 2: Set up your development environment

npm install firebase --save

Step 3: Initialize Cloud Firestore

const firebase = require("firebase"); //Firebase App (the core Firebase SDK) is always required and must be listed before other Firebase SDKs

require("firebase/firestore"); // Add the Firebase products that you want to use

firebase.initializeApp(firebaseConfig); // Initialize Firebase

var db = firebase.firestore(); //Initialize an instance of Cloud Firestore

Step 4: Adding Data

db.collection(collectionName).add({
    fieldName: fieldValue
})
.then(function(docRef) {
    console.log("Document written with ID: ", docRef.id);
})
.catch(function(error) {
    console.error("Error adding document: ", error);
});

Step 5: Read Data

db.collection(collectionName).get().then((querySnapshot) => {
    querySnapshot.forEach((doc) => {
        console.log(`${doc.id} => ${doc.data().fieldName}`);
    });
});