[web2py] Using request.env.http_referrer to link to previous page

[Richard Arts]

Hello,

Can somebody point out to me how to use the request.env.http_referrer
to link to the previous page?

So far I have tried the following in the template file:
{{=A('Back', _href=URL(request.env.http_referrer))}}
but it links to the current page.

Trying to supply the http_referrer through a dict does not work either.

I'm certain I must be overlooking something...

Using 1.97.1.

Thanks in advance,
Richard