🐛 [Bug]: ctx.Bind().URI() fails to bind parameters with custom params tags

[DarkHeros09]

Bug Description

In Fiber v3, the Bind().URI() method fails to populate struct fields when using the params tag, even when the tag name matches the route parameter name exactly. Manual retrieval via ctx.Params() works, suggesting the issue lies specifically within the Binder's reflection logic.

How to Reproduce

Steps to reproduce the behavior:

1. Define a struct with a params tag.
2. Define a route with a matching parameter name.
3. Call ctx.Bind().URI() inside the handler.

Expected Behavior

params.ID should be populated with the value from the URL (e.g., 5).

Fiber Version

V3

Checklist:

• I agree to follow Fiber's Code of Conduct.
• I have checked for existing issues that describe my problem prior to opening this one.
• I understand that improperly formatted bug reports may be closed without explanation.

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[gaby]

@DarkHeros09 This is because the binder is expecting the tag to be named uri, while it used to be param in fiber v2.

[ReneWerner87]

@gaby So it's not really a bug, but a change that came with v3.
Should we support the old tag key or adjust the docs and migrator ?

@DarkHeros09 Can you verify whether it works after changing the tag key?

[DarkHeros09]

@gaby So it's not really a bug, but a change that came with v3.
Should we support the old tag key or adjust the docs and migrator ?

@DarkHeros09 Can you verify whether it works after changing the tag key?

I’m currently AFK, but I’ll confirm it as soon as I get back home.

[DarkHeros09]

A migration guide should be sufficient; supporting both uri and params is neither justified nor reasonable.

This my opinion, but the choice is all yours.

Thank you all for your hard work.

[gaby]

@ReneWerner87 yes/no ? The PR is ready.

[DarkHeros09]

Yep, the tests passed. Everything worked fine after changing the params to uri.