redirect 'back' does not work

[cviewsupport]

Hello, right now my code redirects to a specific url when the form is submitted: this.redirect('/clients');

Instead of that I want it to redirect to the previous page when the form is submitted. I tried this but it does not work. this.redirect('back');

When I submit that form it just stays on that same page.

Any suggestions?

[fl0w]

What version of Koa are you using, v1?

[fl0w]

Actually, some abbreviated src would be appreciated. The special cased back is tested and is passing without issues, I'm assuming there's something wrong in your application code rather.

[cviewsupport]

Version = koa 1.2.0

[fl0w]

Then I would recommend you to upgrade to latest Koa 1.6.x (which is the latest 1.x version).

[cviewsupport]

Here is just a portion of the code. This is working in production with no issues. I can change the redirect from /cameras to any other url and it works fine. The problem is that I cannot get it to just go back to the previous page.

` try {

yield Camera.update(this.params.id, this.request.body);

// return to list of cameras
this.redirect('/cameras');

} catch (e) {
// stay on same page to report error (with current filled fi    elds)
this.flash = { formdata: this.request.body, _error: e.message };
this.redirect(this.url);
}

};`

[cviewsupport]

Instead of: this.redirect('/cameras');

I need it to go back to the previous page like this. this.redirect('back');

But when I do that it just submits the data then stays on that same page.

[cviewsupport]

I am trying to avoid upgrading koa because this is a fairly big app that is in production. If I upgrade it... I am sure a lot of stuff will break.. :)

[fl0w]

Well, 1.2 has a vulnerability from fresh, RE DoS. You should consider it either way. There shouldn't be any breaking changes from 1.2 to 1.6.

Anyway I just tested it, and it works in 1.2. I assume you're doing a form POST or something, which could explain things.

So, the redirect occurs from A -(POST)> B -> A (but you probably want to go to the page before A). There's nothing wrong with the redirect. All 'back' does is grab url from Referrer, set a Location headerfield and responds.

[cviewsupport]

Yes on page "A" there is a form post. When I submit the form it just stays on page "A" when I use 'back'

Is there a way to get it to go back to the page before "A"?

Maybe something like: window.history.back()

[cviewsupport]

Thanks for the info on the upgrade. I will give it a try on the dev server... Hopefully the whole app does not break. :)

[fl0w]

Yea, there's probably ways to achieve that, like keeping a record from session or manipulating window.history if you're doing a SPA. There's better forums to ask that question in though.