web2py redirect to previous page

Question

When from a page , I goto another page via some hyperlink,is there any way to go back to the previous page. The previous page has some arguments also. SO I want to ask whether the previous page is saved somewhere or is there any other way to go back to that page

? Aside from magic on the server. There is nothing to save the previous state of the page you've navigated away from. You must perform this task yourself by saving the information you require in the session. — Glycerine, Dec 21 '10 at 15:06

score 7 · Accepted Answer · edited Jan 29 '15 at 20:43

7

In http there is a header field called "referrer". If present it point to the previous page. You can access it from web2py:

if request.env.http_referer:
    redirect(request.env.http_referer)

edited Jan 29 '15 at 20:43

Raydel Miranda

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answered Dec 23 '10 at 16:19

mdipierro

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I just wanted to add that HTTP referrers can't be trusted to hold valid information, the onus is on you (OP) to sanitize it. – user183037 Oct 17 '11 at 16:42
2

also, it's stored as 'http_referer'. – user183037 Oct 17 '11 at 16:50

score 3 · Answer 2 · answered Jul 18 '13 at 14:35

You have to be careful doing this if using a form on the page, since the initial load of the page will have the correct referer, however after submitting the form, the referer will be the page itself. To work around, I did something like this:

if session.back:
    redirect_url = session.back
else:
    redirect_url = URL()

# create form, do stuff, etc.
if form.accepts(request.vars.session):
    session.back = None
else:
    session.back = request.env.http_referer

web2py redirect to previous page

2 Answers2