Re: Using django/mod_wsgi with apache httpd ErrorDocument seems to confuse reverse URL mapping

Quick update, the answer to my question in reading the source code is to set FORCE_SCRIPT_NAME=/wsgi-app/ from the example below. It also seems that the trailing slash in the WSGIScriptAlias is not appropriate, so the directive should be:

WSGIScriptAlias /wsgi-app ...

It also seems, as per this Django issue: https://code.djangoproject.com/ticket/12464#comment:16

A whole bunch of other sites also propose overwriting with request.META['SCRIPT_NAME'] and the request.environ['SCRIPT_NAME'] in wsgy.py or to use Apache to manually set X-SCRIPT_NAME to this value, It seems they all work in different ways, but the most straight-forward seems to be the FORCE_SCRIPT_NAME in settings.py

On Monday, June 27, 2016 at 3:09:13 PM UTC+2, Patrick Ethier wrote:

Hi, I'm trying to set up mod_wsgi and Django to handle authentication and I'm getting a weird problem. After much troubleshooting I've distilled it down to the configs below:

/etc/httpd/conf.d/10-django.conf

<VirtualHost *:80>

ServerName site.internal

DocumentRoot /home/user/git/standard-web-site-no-python-stuff/

alias /static/ /home/user/git/project/app/static/

<Directory "/home/user/git/project/app/static">

  Require all granted

</Directory>

<Directory "/home/user/git/project/app">

  <files "wsgi.py">

    Order Deny, Allow

    Allow from all

    Require all granted

  </Files>

</Directory>

WSGIDaemonProcess site.internal user=apache processes=2 threads=10 display-name=%{GROUP} python-path=/home/user/git/project

WSGIProcessGroup site.internal

WSGIScriptAlias /wsgi-app/ /home/user/git/project/app/wsgi.py

<Location "/">

  Order Deny, Allow

  Allow from all

  ErrorDocument 404 "/wsgi-app/"

</Location>

</VirtualHost>

My Django project is set up VERY simply with the following:

/home/user/git/project/app/wsgi.py

...imports...

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "app.settings")

from django.core.wsgi import get_wsgi_application

application = get_wsgi_application()

/home/user/git/project/app/views.py

def main(request):

  return render(request, "appname/template.tmpl")

def testme(request):

  return render(request, "appname/template2.tmpl")

/home/user/git/project/app/urls.py

urlpatterns = [

  url(r'^$', "app.views.main", name="app-main"),

  url(r'^testme/$', "app.views.testme", name="app-testme"),

]

/home/user/git/project/app/templates/app/template.tmpl

...HTML Stuff...

<a href="{% url "app-testme" %}>testme</a>

...More HTML stuff

--------------

The above app works 100% fine when I go to http://site.internal/wsgi-app/. If I hover over the "testme" anchor, I get http://site.internal/wsgi-app/testme/

BUT! If I go to http://site.internal/non-good-html.html and get redirected by the ErrorDocument 404 directive it shows my views.main() page.

When I hover over the "testme" anchor, I get http://site.internal/testme/ (***Notice the missing /wsgi-app/***)

It seems like the app namespace is not preserved when I'm rendering the main() page from an ErrorDocument directive.

I tried adding app_name="wsgi-app" to the urls.py but it doesn't change anything.

I must be missing something simple as this seems like an easy use-case to implement.

Pat

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