On Feb 2, 2011, at 7:52 AM, Tom Atkins wrote:
> Thanks for your work on the new routers Jonathan - it makes life much easier.
>
> Quick question, say I have:
>
> routers = dict(
> BASE = dict(
> domains = {
> 'domain1.com' : 'app1',
> 'domain2.com' : 'app2',
> }
> ),
> )
>
> But would also like www.domain1.com to map to app1 but also change the URL to
> domain1.com (stripping the www part) what is the best way to achieve that?
>
> Ideally I'd like it to work the same way as this .htaccess:
>
> RewriteEngine On
> RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
> RewriteRule ^(.*)$ http://%1/$1 [R=301,L]
>
> This silently redirects to the non www domain and sends a 301 to any search
> engines to make it clear that the only site is at domain1.com (nothing at
> www.domain1.com).
>
If possible, it's better to do the redirection through .htaccess. It's more
efficient, since web2py never has to run.
This should also work, if you don't really need the redirect, so it's also
efficient:
routers = dict(
BASE = dict(
domains = {
'domain1.com' : 'app1',
'www.domain1.com' : 'app1',
'domain2.com' : 'app2',
}
),
)
My impression is that search engines (Google anyway) are fairly smart about
encountering the same content at related domains, and IIRC Google has a
protocol for telling them which address is preferred.
If you still want to do it through web2py, I think I'd do the rewrite as above
(for both domain1 and www.domain1) and in models/0redirect.py (or at any rate,
before any other application code runs), something like:
if request.env.http_host == 'www.domain1.com':
redirect("http://domain1.com%s"; % request.env.request_uri, 301)
or more generally:
redirects = {
'www.domain1.com' : 'domain1.com',
...
}
if request.env.http_host in redirects:
scheme = request.env.get('wsgi_url_scheme', 'http').lower()
uri = "%s://%s%s" % (scheme, redirects[request.env.http_host],
request.env.request_uri)
redirect(uri, 301)
None of that is tested, and you'd want to check it all, including appropriate
escaping (if it's not done already). But you get the idea. It also doesn't take
port overrides into consideration.
