Dynamic redirectUrl params only work for last page submissions

[chrisrowe]

Describe the bug

If I have a multipage form and the last page is conditionally shown based on earlier inputs then the redirect URL parameters (eg redirectUrl: form.getRedirectEntry.url ~ '?uid={uid}', only get populated and uid parsed if the submission comes from the last page in the form

Steps to reproduce

1. Create a form with 3 pages
2. Add option to page 1
3. Conditionally show page 3 based on page 1 question
4. If page 3 is never shown {uid} isn't swapped out

Form settings

• Multi-page form: Yes
• Submission Method: Page Reload
• Client-side Validation: Yes
• Custom Form Templates: No

Craft CMS version

5.6.6

Plugin version

3.0.20

Multi-site?

No

Additional context

No response

[engram-design]

This is correct behaviour (for now), mostly because otherwise we evaluate things too early. What if the redirect URL contained field values on the nth page?

More importantly, sometimes you don't want to expose the resolved redirect URL before the form is complete, which would be typical of a gated form, which requires users to fill out a form before discovering the redirect - whatever that may be.

But in your scenario when there's a conditional evaluation involved, it's indeed a little trickier. Looking into it!