Django URLs with/without proxy server

[Barun Saha]

I have two Django apps (say, app1 and app2) hosted on the same machine using Apache mod_wsgi. These two apps are hosted on two different environments:

 1. On a physical server where only these two apps are hosted. They are accessed as http://www.example.com/app1/app1/ and http://www.example.com/app2/app2/.
 2. In the second environment there is a proxy server. A separate web page on that server is accessed as http://www.domain.com/. This links to the above two apps (now hosted on a single virtual machine) as http://www.domain.com/id1/ and http://www.domain.com/id2/

The URLconf file looks like:

    urlpatterns = patterns('',
        (r'^admin/', include(admin.site.urls)),
        (r'^app1/', include('project.app1.urls')),      
    )

The problem is, this URL configurations works in the environment 1, but not in the environment 2. Now, if I do something *crazy* in the environment 2 such as 

     urlpatterns = patterns('',
        (r'^admin/', include(admin.site.urls)),
        (r'^app1/app1/app1/', include('project.app1.urls')),      
        (r'^app1/app1/', include('project.app1.urls')),      
        (r'^app1/', include('project.app1.urls')),      
     )

then the application works. In the env. 2, the app is accessed as http://www.domain.com/id1/app1/app1/.

I couldn't understand why we need to prefix app1 in the URL so many times. In other words, why (how) this works.

Could someone clarify on this? Also, note that all configurations need to be done on the virtual machine. I don't have access to the proxy server.

(Posted in Stackoverflow: http://stackoverflow.com/questions/15159134/django-urls-with-without-proxy-server)

[Bill Freeman]

You haven't show project/app1/urls.py (or wherever you're getting project.app1.urls).  My guess is that it also specifies that each url begins with "app1/".  Since the root urlconf matches *and consumes* one "app1/" from the request path, any "app1/" required by app1's urls.py is required in addition.

Or isn't that your question?

Bill

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[Barun Saha]

Bill,

The URLs in the file for app1 do not have such prefix. Following are two lines from project/app1/urls.py -- other URLs have similar structure, including that for app2.

urlpatterns = patterns('project.app1.views',
    url(r'^$',                                  'index',         name='index'),
    url(r'^(?P<object_id>\d+)/$',               'introduction',        name='introduction'),
)

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Thanks,
Barun Saha
JPA
IIT, Kharagpur

http://pothi.com/pothi/book/barun-saha-swapner-kheya
http://delay-tolerant-networks.blogspot.com/p/one-tutorial.html

[Bill Freeman]

I don't know then.  If it were me, at this point I'd be single stepping through the resolver code with pdb (runserver), or if the problem doesn't happen under runserver, adding logging calls to the url resolver code to see what it's doing where and when.