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 useReducer for state management

The useReducer hook is a state management hook in a React application. It is quite a bit more robust than the useState hook we discussed earlier in this chapter as it separates the state management logic in the function component from the component-rendering logic.

The useState hook encapsulates the state management function with component rendering logic, which may become complex to handle in a large React project with the need for complex state management. The following is the syntax for useReducer:

`const [state, dispatch] = useReducer(reducer, initialState)

The useReducer hook accepts two arguments – the reducer, which is a function, and the initial application state. The Hook then returns two array values – the current state and the Dispatch function.

Basically, we need to understand these core concepts in useReducer:

  • State: This refers to mutable data that can be changed over time. State doesn’t have...