How to Save an Integer Value to Firebase in Flutter and Retrieve It?

Learn how to save and retrieve an `integer value` in Flutter with Firebase. Perfect for applications requiring unique numeric logins, like student IDs.
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How to Save an Integer Value to Firebase in Flutter and Retrieve It?

Introduction

In the world of mobile app development, creating a secure and efficient authentication system is crucial. When building applications with Flutter, you may want to implement a unique login system using an integer value, like a student number or ID. However, you might find that traditional authentication mechanisms focus heavily on email and password combinations, leaving you wondering where to store and how to manage your integer-value logins.

In this guide, we will explore a solution to save an integer value to Firebase in Flutter and retrieve it when needed. Let’s dive into it!

The Problem: Using Integer Values for Authentication

Imagine building an application that allows students to log in using their school numbers instead of standard email credentials. This approach provides a straightforward and secure method for students to access the system.

However, the challenge lies in how to store these integer values securely in Firebase, and how to retrieve them for authentication purposes. The good news is that with Firebase and some cloud functions, this can be achieved quite easily.

The Solution: Using Firebase and Cloud Functions

To successfully save and retrieve an integer value in your Flutter application using Firebase, you can follow these steps:

Step 1: Set Up Firebase in Your Flutter Project

Create a Firebase Project: Go to the Firebase console and set up a new project for your application.

Add Firebase to Your Flutter App:

Step 2: Writing Cloud Functions

To manage the integer values effectively, you’ll want to write backend cloud functions to handle read and write operations with your database. Here’s a high-level overview:

Set Up Firebase Cloud Functions:

Initialize Firebase Functions in your Firebase project.

Write a function that allows you to create a new user with their integer ID and a password.

Write another function that authenticates a user based on the integer ID and password.

Example (pseudo-code):

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Step 3: Implementing Authentication in Flutter

Call the Cloud Functions from Flutter:

Use the cloud_functions package in Flutter to call your backend functions when a user attempts to log in or register.

Example:

[[See Video to Reveal this Text or Code Snippet]]

Handle Responses: Process the responses from your cloud functions to handle successful registrations or account logins.

Step 4: Retrieving the Stored Integer Value

Once an integer user ID is saved in your Firebase database, retrieving it can be done easily with Firestore:

Query Firestore:
Use Firestore queries in Flutter to fetch user data associated with the integer ID.

Example:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

With a few simple steps, you can successfully save an integer value as a unique identifier for logging into your Flutter application using Firebase. By leveraging Firebase cloud functions, you can create a robust system that allows for integer-based authentication, ideal for cases like student IDs.

If you have any questions or need further assistance while implementing this, feel free to reach out or leave a comment below!