How to Convert a React Native Class Component to Functional Hooks with i18next

Описание: Learn how to effectively convert a React Native class component to a functional component using hooks and the `i18next` library for internationalization.
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This video is based on the question https://stackoverflow.com/q/66985805/ asked by the user 'Luis Henrique' ( https://stackoverflow.com/u/11841144/ ) and on the answer https://stackoverflow.com/a/66985973/ provided by the user 'Jensen' ( https://stackoverflow.com/u/5590857/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Converting React Native Class Components to Functional Components with Hooks

In the world of React Native, hooks have revolutionized how we manage state and side effects in our components. However, if you're transitioning from class components to functional components, you might run into challenges. One common question that arises is how to convert a constant function within a class component to a functional component effectively while using libraries like i18next for internationalization. In this guide, we’ll walk through a specific example of this conversion, highlighting the key differences and providing a step-by-step solution.

The Problem: Understanding the Class Component

Let's take a look at an example class component that you're familiar with:

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In this class component, you have a method, myTitle, that retrieves the first name from the people prop and determines what string to display based on that name. Now, you're looking to convert this class component to a functional component using hooks.

The Solution: Creating a Functional Component with Hooks

To convert the above class component into a functional component using React hooks, follow these simple steps:

Step 1: Import Required Libraries

First, ensure you import the necessary hooks and libraries. You will need useState from React and useTranslation from i18next.

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Step 2: Define the Functional Component

Next, define your functional component. Instead of extending a class, you’ll create a function called Booking. You will also initialize state using the useState hook.

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Step 3: Rewrite myTitle

Now, transform the myTitle method into a function inside your component. Here, you will access the state and perform the same logic as before.

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Step 4: Return JSX

Finally, ensure your component returns the correct JSX. You'll still render the result of myTitle inside a <View>.

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Full Functional Component Code

Putting it all together, your complete functional component looks like this:

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Conclusion

By following these steps, you have successfully converted a React Native class component into a functional component using hooks. This approach not only simplifies your code but also enhances its readability and maintainability. Embracing functional components with hooks is a valuable skill in modern React development, particularly when integrating with libraries like i18next for localization. Happy coding!