Sullivan WxPyQtKinter wrote:
> 1. Are there any method (in python of course) to redirect to a web page
> without causing a "Back" button trap... rather than the redirection page
> with a "Location: url" head
What's wrong with the redirection page?
If there's really a necessary reason for not using an HTTP redirect
(for example, needing to set a cookie, which doesn't work cross-browser
on redirects), the best bet is a page containing a plain link and
<script>-redirect, using location.replace() to avoid the back button
trap.
> 2. Are there any method to use relative path, rather than full absolute
> URI path in "Location: url"? It is very essential for later transplant
> work, e.g.,transplant a folder of cgi scripts from one web server to
> another, with different URL.
Just read the name of the server (os.environ['SERVER_NAME']) to work
out what absolute URL to redirect to, whist still being portable.
Here's some code I dug up that should also cope with non-default ports
and SSL, if that's of any use:
ssl= os.environ.get('HTTPS', 'off') not in ('', 'off', 'false', 'no')
scheme= ['http', 'https'][ssl]
port= ['80', '443'][ssl]
host= os.environ.get('SERVER_NAME', 'localhost')
url= '%s://%s:%s' % (scheme, host, os.environ.get('SERVER_PORT',
port))
if url.endswith(':'+port):
server= server[:-(len(port)+1)]
url+= path
(You *can* pass relative URLs back to the web server in a Location:
header, but this should do an internal redirect inside the server,
which may not be what you want.)
--
And Clover
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