How to Modify JSON Response in React Native with TypeScript

Learn how to adjust your JSON response in TypeScript projects using React Native. Follow this structured guide to group data effectively for better display.
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How to Modify JSON Response in React Native with TypeScript

When developing applications in React Native, you often need to manage and manipulate data coming from APIs, particularly JSON data. A common scenario might involve modifying your JSON response to fit your display requirements. In this post, we will guide you through the process of modifying a JSON response to group values based on a specific key.

The Problem

Suppose you have an external API that returns a JSON response structured in a certain way, and your goal is to transform this data to group items by a particular property. For instance, you have a JSON structure consisting of MaintroomName and Plsectn properties, and you want to organize the data so you can easily display all MaintroomName belonging to the same Plsectn.

Original JSON Structure

Here's how the original JSON response looks:

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

Your goal is to transform this into a new structure, like the example below:

Desired JSON Structure

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

Note:

Each Plsectn can have a dynamic number of MaintroomName.

The Solution

To achieve the desired structure, we will implement an algorithm to organize this data correctly. Below, we will outline the necessary steps and provide a practical example you can use in your application.

Step 1: Create the Sorting Algorithm

We will create a function to handle the data sorting. Here is the complete function for transforming the JSON response:

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

Step 2: Implement in your useEffect Function

Now, integrate this sorting function within your useEffect. Here is how you can implement it based on the previous function:

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

Step 3: Understanding the Code

Keys Tracking: We maintain a list of unique PlsectnName entries to avoid duplicates in our result.

Data Structuring: For each unique PlsectnName, we create a new object where we organize MaintroomName under the corresponding Plsectn.

Final Thoughts

By following the above steps, you can effectively modify the JSON response in your React Native application to meet the desired structure. This transformation not only cleans your data but also makes it easier to render in your UI components.

If you're facing similar challenges or have additional questions, feel free to comment below!