Improving ExpressJS Routes for JSON Responses and Rendering with HBS скачать в хорошем качестве

Improving ExpressJS Routes for JSON Responses and Rendering with HBS

Learn how to optimize your ExpressJS application to handle JSON responses efficiently and render them using Handlebars (HBS) without unnecessary complexity. --- This video is based on the question https://stackoverflow.com/q/72863064/ asked by the user 'Jennifer' ( https://stackoverflow.com/u/10404170/ ) and on the answer https://stackoverflow.com/a/72863119/ provided by the user 'Phil' ( https://stackoverflow.com/u/283366/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Return a res.json and get it with res.render in other router Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Improving ExpressJS Routes for JSON Responses and Rendering with HBS If you're working with ExpressJS to build web applications, you might come across scenarios where you need to return JSON data from one route and use that data to render a view with Handlebars (HBS) in another. The prevalent question arises: How do we achieve this efficiently without turning to unnecessary internal HTTP requests? In this post, we’ll walk through an optimal approach to handle JSON responses and render views, avoiding potential pitfalls along the way. The Problem In your current setup, you have a route that handles API requests to fetch products, and another route that should display these products using HBS. Here’s the breakdown of your situation: You fetch the product data from the /api/product endpoint. You render this data in a view located at /product. However, you're currently relying on an internal HTTP request, which can lead to performance issues and is generally not considered a best practice within the same application. The Solution There’s a more efficient way to handle this—the key is to encapsulate your data access logic into reusable functions. This way, you can call the same function from multiple route handlers, streamlining your code and avoiding the need for internal HTTP requests. Step-by-Step Breakdown 1. Create the Product Retrieval Function Instead of fetching the product data through an HTTP request internally, define a function that retrieves your product data. Here's how you can encapsulate your product fetching logic: [[See Video to Reveal this Text or Code Snippet]] This function can then be reused in multiple places within your application. 2. Update the Render Products Function Refactor your existing render function to utilize the new getProducts function. This will let you serve JSON responses properly: [[See Video to Reveal this Text or Code Snippet]] 3. Modify the RequestViews Class Now, in your RequestViews class, you can also access the product data without needing to duplicate the request logic. Here's what that might look like: [[See Video to Reveal this Text or Code Snippet]] Summary of Benefits Reusability: By defining the getProducts function once, you eliminate redundancy in your code. Performance: Avoiding internal HTTP requests improves response time and reduces server load. Simplicity: Keeping your data handling logic in one place makes your application easier to maintain and debug. Conclusion With these changes, you’ll have a much cleaner and more efficient approach to managing your ExpressJS application routes for both JSON responses and rendering views. Instead of battling with internal HTTP requests, consolidate your logic into reusable functions and let your application flow seamlessly. This not only enhances performance but also makes your codebase more readable and maintainable. Thanks for reading, and happy coding!