Скачать или смотреть How to Make Legacy JSON Login and Lexik JWT Coexist in Symfony 6

This guide explains how to configure Symfony 6 to support both legacy JSON login and Lexik JWT authentication, addressing common pitfalls and providing best practices.
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How to Make Legacy JSON Login and Lexik JWT Coexist in Symfony 6

Integrating different authentication methods within a Symfony application can be quite challenging, especially when you have a legacy system that you don't want to modify extensively. If you’re working with Symfony 6 and need to have both legacy JSON login and Lexik JWT authentication coexist, you might be facing some common hurdles. In this post, we’ll explore how to configure your Symfony application correctly to achieve this setup.

The Problem

You have a legacy Symfony project where you want to add JWT token authentication to the REST section. However, when configuring both types of authentication in your security.yaml file, the first firewall defined takes precedence, causing the second one to fail. This can lead to persistent 401 Unauthorized errors when attempting to log in through the REST routes.

Specific Issues You Might Encounter:

The getUser() function returns null in controllers.

Access control rules seem to not apply correctly, resulting in authentication failures.

Typical configurations run smoothly in isolation but conflict when both are used together.

The Solution

The good news is that this is a known issue and can be resolved with a careful reconfiguration of your firewalls. Here’s step-by-step guidance on how to do it:

1. Review Your Firewalls

Make sure your firewalls are clearly separated and correctly defined to avoid interference. Here's a brief on how to set up your security.yaml:

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

2. Adjust Access Controls

Always place your access control rules at the top of your list, as order matters in Symfony. The rules should be set to allow public access to your REST login routes, ensuring that the legacy system does not obstruct them:

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

3. Test Authentication Paths

Ensure that both the main and rest firewalls correctly handle their respective paths. When making requests to /rest/login, the correct firewall (restlogin) should handle the authentication without interference from the main firewall.

4. Verify Route Configurations

Double-check that your routing structure is correct and properly aligns with your firewalls and access controls. You want to ensure the following routing structure is in place:

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

5. Debugging Authentication Issues

Check your logs for more information about authentication failures.

Use Symfony's debug tools to verify which firewall is being triggered for your requests.

Validate your JWT implementation to ensure it is being correctly sent and processed.

Conclusion

By carefully configuring your firewalls and access controls in the security.yaml file, you can successfully have both legacy JSON login and Lexik JWT authentication coexist in your Symfony 6 application. Ensure that you keep your legacy code stable while integrating new features for a smoother migration path in the future.

If you encounter issues, don’t hesitate to revisit the configurations or look into Symfony's documentation for further details.

Now, go ahead and integrate those authentication methods successfully!