`wp_registration_url()` doesn't have a redirect argument

[Denis-de-Bernardy]

There is a redirect argument for each of the login, logout, lostpassword url functions, but for the registration url function.

Omission or done on purpose?

[Denis-de-Bernardy]

On a related note, I'm noting a different logic in multisite and non-multisite in the wp-signup.php file, and a direct call to site_url('wp-login.php?action=register') within it, so I presume this rabbit hole is deeper than it looks on the surface.

[juliobox]

Hello
What about "registration_redirect" ? (/wp-login.php, line 687 on WP3.9b3)

[sanchothefat]

Patch adds redirect parameter to wp_registration_url

[sanchothefat]

The registration_redirect filter in wp-login.php seems to be the exception to the rule in the login/forgot/register forms. There's a valid use case for having the filter in the wp_registration_url() function if it's used on the front end. You could set up logic to return a user to their previous location on the site without relying on the referrer. There's also code that respects the redirect_to get or post param if set so this makes sense IMO.

## Description

This PR adds an optional $redirect parameter to wp_registration_url(), enabling redirection after registration, similar to other WordPress URL functions. If a redirect URL is provided, it’s added as a redirect_to query argument.

## Changes Made

Added $redirect Parameter:

• Allows specifying a redirect URL for post-registration navigation.
• Checks if $redirect is provided, and if so, adds it as a redirect_to query argument to the base registration URL.
• The function now filters the updated $register_url and includes the $redirect parameter in the filter hook, ensuring custom modifications to the registration URL also have access to this parameter.

## Testing Instruction

• Check wp_registration_url() with and without a redirect parameter.
• Verify that the generated URL correctly includes the redirect_to parameter when specified.

## Trac ticket: https://core.trac.wordpress.org/ticket/27632