Temporary fix for frontend AfformTokens being generated incorrectly

[mattwire]

Overview

On WordPress when you use the Afform "MessageTokens" it doesn't always generate the correct URLs.

Before

URLs generated incorrectly depending on context

After

URLs generated correctly.

Technical Details

Example:

1. Submit an Afform (with contact + activity) that is on the WordPress frontend (eg. embedded in a page): https://mysite.com/myfirstform.
2. Trigger a CiviRule on "activity create" that sends an email containing a "Message Token" for another form: https://mysite.com/mysecondform.
3. Review the sent email and see that the link to the form is not correct.

It looks like: https://mysite.com/myfirstform?civiwp=mysite.com/mysecondform&token=...
But should look like: https://mysite.com/mysecondform?token=...

This is because the tokens code detects the referrer form and uses that as the frontend_url which we don't want in this case because the forms are completely separate.

Comments

Adding this as draft because it's a hacky proof of concept using \Civi::$statics to pass context through. But we should do it a better way.

[civibot]

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