How To Add And Get Key Record To Firebase Realtime Database

Method to use auto-increment keys in Firebase Realtime database

What is Firebase and Firebase Realtime Database?

Firebase is a well-known BaaS (Backend as a Service). Some may describe firebase equally a PaaS (Platform as a Service) likewise. This platform is developed past Google for creating mobile and spider web applications.

This provides developers with a variety of tools and services to assistance them develop quality apps easily.

There are then many services offered by firebase. Firebase Realtime Database is a cloud-hosted NoSQL database that enables information to be stored and synced between users in real-time. The information is synced across all clients in real-time and is even so available when an app goes offline.

Auto Increment Keys in Firebase Realtime Database.

In my stance, a major drawback in this existent-time DB is not having auto-increment keys. Nosotros tin can see Autoincrement keys in Firebase Firestore Database, just not in Firebase Realtime Database. Indeed, this NoSQL DB is mainly designed for unstructured and semi-structured data. But we demand to shop information with unique keys like a primary key in RDBMS there's no proper style to do it.

In this article, I'm going to depict how I overcome this issue.

Firebase Realtime Database API

This database provides a Balance API to perform our Grime operations as needed. Information technology'due south very easy to consume and organize.

Example:-

proper name: {

"outset": "Jack",

"last": "Sparrow"

}

If we have structured data as above nosotros tin can recollect our data using below API endpoint.

'https://[PROJECT_ID].firebaseio.com/users/jack/name.json'

So the output will exist equally below,

{ "outset": "Jack", "terminal": "Sparrow" }

We can perform Get,PUT,Mail,PATCH,DELETE methods.

Using this link you can view the official documentation — https://firebase.google.com/docs/reference/residue/database

Implementing Auto Increment Keys for Records.

My goal is to create something like this.

Implementation is straightforward.

Step 1 — First we have to create this customer index in our DB to store the terminal id. You lot tin can define this fundamental when you are creating your DB.

Footstep 2 — Retrieving last id using GET request to — https://[PROJECT_ID].firebaseio.com/customerindex.json

Step 3 — Now nosotros have our last ID so we can increment this value in our app.

Pace iv — This code is a instance of creating a PUT asking using axios in react.

*new_customer_id is formatted string with incremented id

*userValues is a JSON Cord.

axios.put(`https://[PROJECT_ID].firebaseio.com/customers/${new_customer_id}.json, userValues)

.then((response) => {

if (response.status === 200) {

console.log("OK"); }

})

.catch((fault) => {

console.log(error) });

Step 5 — And don't forget to update our last client id in DB.

axios.put(`https://[PROJECT_ID].firebaseio.com/customerindex/customerlastid.json`, lastID)

.then((response) => {

if (response.status === 200) {

console.log("OK");

}

})

.grab((error) => {

console.log(mistake);

});

This method is non very efficient since it's using 2 API requests just to Become and UPDATE the Key.

Hope this will help you lot to get a quick agreement of the Firebase Realtime Database. You can detect more details virtually this DB in the firebase official documentation.