How do I check if request.HTTP_REFERER is defined?

[desbest]

This may sound like a foolish question but when I use defined? it doesn't work and if I just use !request.HTTP_REFERER.nil? or if request.REFERRER

it either doesn't work or I get an exception error saying that it's an undefined method.

For all other variables like the user.username one it works, but not on request.

[Yorick Peterse]

Desbest,

You can simply check this as following:

if request['HTTP_REFERER']
# Do something with the referrer header.
else
# Do something else.
end

Yorick

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[tynamite]

I tried that just now and it doesn't work.

Here's a gif screencast to show you how what is happening is different from expected behaviour.

http://img820.imageshack.us/img820/7228/twork.gif

On 1 November 2012 10:48, Yorick Peterse <yorick...@gmail.com> wrote:

Desbest,

You can simply check this as following:

    if request['HTTP_REFERER']
      # Do something with the referrer header.
    else
      # Do something else.
    end

Yorick

On 01/11/12 01:53, desbest wrote:

This may sound like a foolish question but when I use defined? it
doesn't work and if I just use !request.HTTP_REFERER.nil? or if
request.REFERRER
it either doesn't work or I get an exception error saying that it's an
undefined method.

For all other variables like the user.username one it works, but not on
request.

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[Yorick Peterse]

Desbest,

My mistake, it's located in `request.env['HTTP_REFERER']` and not
`request['HTTP_REFERER']`.

Yorick

[tynamite]

Thank you, this works!

[John]

Perhaps off-topic, but in this respect if you need to create a 'stack' of requests for redirection reasons

e'g'; lets say someone arrives in page A, then is redirected to Login page B, then is redirected to survey C, then back to A 

what is the best way to do so?

/pagojo

[Yorick Peterse]

John,

In this case you'd probably want to store this in the user's session.
Something like the following could be a start for this:

class MainController < Ramaze::Controller
before_all do
if request.env['HTTP_REFERER']
session[:redirects] ||= []
session[:redirects] << request.env['HTTP_REFERER']
end
end
end

Yorick

[John]

Thanks, I thought there might be a more sophisticated way in the framework that i've missed :-)

/pagojo