Скачать или смотреть Fixing 404 Errors with Angular 9 and Nginx Deep Linking Issues

Learn how to resolve `404` errors in your Angular 9 application when using Nginx, focusing on deep linking configurations for seamless navigation.
---
This video is based on the question https://stackoverflow.com/q/62572830/ asked by the user 'John Tiggernaught' ( https://stackoverflow.com/u/4972844/ ) and on the answer https://stackoverflow.com/a/62576545/ provided by the user 'John Tiggernaught' ( https://stackoverflow.com/u/4972844/ ) 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: Angular 9 + Ngnix = 404 when deeplinking

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.
---
Resolving Angular 9 Deep Linking Issues with Nginx Configuration

If you're building single-page applications (SPAs) with Angular 9 and using Nginx to serve your app, you may encounter frustrating 404 errors when refreshing pages or accessing deep links directly. This issue arises from the way Angular routing works in conjunction with server configurations. In this guide, we'll explore what happens when you face deep linking challenges and how to resolve them effectively.

Understanding the Problem

In a typical Angular application, navigation happens within the application without reloading the entire page. However, when you refresh or directly access a route (for example, staging.mydomain.com/page), the server is responsible for providing the correct files. If it's not set up to handle these requests properly, you'll encounter a 404 error.

Example Scenario

Consider an Angular application running perfectly when served through ng serve but failing to load certain routes once deployed to an Nginx server. Here’s a summary of the setup:

Framework: Angular 9

Backend: Loopback 4

Server: Nginx

Issue: Refreshing or directly accessing a non-root route results in a 404 error.

Solution Breakdown

1. Modify Nginx Configuration

Initially, the user tried adding the try_files directive to the Nginx configuration but faced issues even loading the index page. It’s crucial to ensure that your Nginx configurations are set correctly for Angular to handle the routing.

2. Adjust Loopback Configuration

While tweaking Nginx settings is important, in this specific case, the core issue wasn’t with Nginx—it was in the Loopback configuration. The solution involves updating the Loopback server to correctly forward all requests.

Implementing the Fix

To resolve the issue, add the following line to the application.ts file in your Loopback project:

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

Explanation: This line captures all incoming requests that are not matched by any existing routes and serves the index.html file instead. This allows Angular's router to take over and manage routing as intended.

3. Restart Your Server

Once you make the changes to your Loopback application, don’t forget to restart your server. This ensures that the new configurations take effect.

Conclusion

By making a small adjustment to your Loopback configuration, you can effectively resolve the 404 errors encountered in your Angular 9 application when using Nginx. With the changes implemented, refreshing pages or accessing deep links should now work seamlessly, providing a smoother user experience.

If you find yourself stuck, revisiting both your Nginx and backend configurations is key to diagnosing and fixing these types of issues. Remember, in web development, the smallest configuration changes can have a significant impact!

Feel free to share your experiences or further questions in the comments below. Happy coding!