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

What is a Hook in React?

A hook is a special function provided by React that lets you use React core features—state and component lifecycle methods—within a function component. While state is an in-built object in React that adds interactivity and dynamic mechanism to components, the lifecycle tracks the phases components go through, from their initialization to their eventual demise (when a user navigates away or exits from an application UI).

There are three major cyclic phases React components go through, as explained in Chapter 2, Getting Started with React: mounting, updating, and unmounting. Each of these phases has what we call lifecycle methods that can be used during the rendering of React components.

We observed the presence of certain methods, such as componentWillMount(), componentDidMount(), componentWillUpdate(), and componentDidUpdate(), during the class component’s lifecycle. React hooks are used to make function components stateful without...