Скачать или смотреть Solving the Axios call mapping data from another table - ReactJs Challenge

Discover how to efficiently fetch and map related data in your ReactJs application using Axios for better CRUD operations.
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This video is based on the question https://stackoverflow.com/q/64574604/ asked by the user 'Firestarter' ( https://stackoverflow.com/u/1365708/ ) and on the answer https://stackoverflow.com/a/64575041/ provided by the user 'armin yahya' ( https://stackoverflow.com/u/9354934/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Handle Axios Calls for Related Data in ReactJs

When building applications that involve multiple tables and relationships, like a CRUD (Create, Read, Update, Delete) operation on a sales table connected to customers, products, and stores, you may run into issues with how to properly fetch and manage related data. One common question that developers encounter is: How can I effectively get the complete objects for customers, products, and stores instead of just their IDs? Let's delve into the solution for this common problem using Axios in a ReactJs application.

The Problem

In your React application setup, you might have noticed that while you can fetch sales data perfectly, the returned results from your API (Sales/GetSales) only display IDs for the customer, product, and store, leading to null objects for each reference. This limits the usability and clarity of the data you'll eventually render on your UI.

Here's a snapshot of the data structure you're working with:

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You might wonder if you need multiple API calls—one for each related entity (customers, products, stores)—or if there's a more efficient way to address this issue.

The Solution

To solve this problem, you'll need to adjust how you fetch your sales data on the server side. Instead of just sending back the sales records with IDs, modify your API to include the related data for each sale. Let's break this down into actionable steps:

Step 1: Update Your API

The current API isn't looping through the sales data to replace the ID fields with their corresponding object data. You need to modify it so that it fetches the relevant customer, product, and store information based on their IDs. Here's an example of how you might change your API using Node.js and Mongoose:

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

Step 2: Optimize Data Fetching

Using Promises or async/await in the previous example optimizes your API calls. Depending on the size of your data set, you can also consider using Promise.all() to fetch all customer, product, and store data concurrently, which can improve response time.

Step 3: Update Client-Side Logic

Your client-side Axios call won't need significant changes, but ensure that the structure of the fetched data adheres to your application state accordingly:

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

Conclusion

By updating your API to directly fetch related objects during the sales data retrieval, you're not only eliminating the need for multiple client-side requests but also ensuring that the data returned to your React application is rich and informative. This approach leads to a more efficient and cohesive development workflow while enhancing the user experience of your application.

Remember, always strive to let the server handle relationships and data fetching where possible, to simplify client-specific logic and reduce unnecessary complexity.

With this strategy, you'll have a more robust and maintainable codebase that delivers complete information to your users seamlessly!