Converting ANTD Class-based Components to Function-based Components in React

Learn how to transition from class-based to function-based components in React using Ant Design. This guide will provide step-by-step instructions to ease the process.
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How to Convert ANTD Class-based Component to Function-based Component

Introduction

If you're new to React and have been working with class-based components, you may find the transition to functional components a bit challenging. This is especially true when you're also dealing with a popular UI library like Ant Design (ANTD). In this guide, we'll dive into a common scenario: converting an Ant Design class-based component into a function-based component.

The Problem

You might be struggling to understand how to properly manage state and lifecycle methods when shifting from a class-based approach to a functional one. The question at hand is: how do we convert an existing Ant Design class component to a more modern function-based component?

To clarify this, we'll use the following example of a Transfer component from Ant Design that is currently implemented in a class-based structure.

Original Class-based Component

Here's how the class-based component looks:

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

The Solution

To convert this class-based component into a functional one, you'll utilize React hooks such as useState for state management and useEffect for lifecycle methods.

Step-by-Step Conversion

Import React hooks:
You will need to import useState and useEffect from React.

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

Define the functional component:
Begin by creating a function named App that will replace the class.

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

Set up state using useState:
Convert the class-based state into a hook that initializes the state.

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

Replace lifecycle methods with useEffect:
The componentDidMount method will be replaced by useEffect, allowing you to get the mock data on component mount.

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

Define functions for data handling:
Keep your existing logic in terms of data manipulation and user actions, but adjust how you update the state to use the setter from useState.

Rewrite your render method:
The return statement will structure the JSX you want to render.

Final Code

Here’s how the final function-based component looks:

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

Conclusion

Transitioning from class-based to function-based components in React can seem daunting, but by leveraging hooks like useState and useEffect, it becomes a clearer and more concise process. Now you can use the modern functionality of React with your Ant Design components efficiently. If you have any questions or further challenges while making the switch, feel free to ask!