Book Image

Full-Stack Flask and React

By : Adedeji
3.5 (2)
Book Image

Full-Stack Flask and React

3.5 (2)
By: Adedeji

Overview of this book

Developing an interactive, efficient, and fast enterprise web application requires both the right approach and tooling. If you are a web developer looking for a way to tap the power of React’s reusable UI components and the simplicity of Flask for backend development to develop production-ready, scalable web apps in Python, then this book is for you. Starting with an introduction to React, a JavaScript library for building highly interactive and reusable user interfaces, you’ll progress to data modeling for the web using SQLAlchemy and PostgreSQL, and then get to grips with Restful API development. This book will aid you in identifying your app users and managing access to your web application. You’ll also explore modular architectural design for Flask-based web applications and master error-handling techniques. Before you deploy your web app on AWS, this book will show you how to integrate unit testing best practices to ensure code reliability and functionality, making your apps not only efficient and fast but also robust and dependable. By the end of this book, you’ll have acquired deep knowledge of the Flask and React technology stacks, which will help you undertake web application development with confidence.
Table of Contents (21 chapters)
1
Part 1 – Frontend Development with React
9
Part 2 – Backend Development with Flask

Using useState to develop stateful components

The useState Hook allows you to manage state in React applications. Function components rely on the useState Hook to add state variables to them. State is an object in React that can hold data information for use in React components. When you make a change to existing data, that change is stored as a state.

This is how it works: you pass an initial state property to useState(), which then returns a variable with the current state value and a function to update this value. The following is the syntax of the useState Hook:

const [state, stateUpdater] = useState(initialState);

Let’s see a simplistic use case of how useState works:

import React, {useState} from 'react';const App = () => {
  const [count, setCount] = useState(0);
  const handleIncrementByTen = () => {
    setCount(count + 10);
  };
  const handleDecrementByTen = () => {
 &...