Extending admin's index view

Hallo everybody!

I've got problem exteding the admin's index view. I need to pass
extra_context to the index of the admin, after the administrator logged
in, that's why I'm trying to extend the view. So...

What I've got is:

In the root of the project I modified urls.py like following:
(r'^admin/$', project.admin.admin_site.index),
(r'^admin/', include(admin.site.urls)),

Again in the root of the project I've got admin.py with the following
snippet of code:

[...]
class AdminSiteRegistryFix( object ):
'''
This fix links the '_registry' property to the orginal AdminSites
'_registry' property. This is necessary, because of the character of
the admins 'autodiscover' function. Otherwise the admin site will
say, that you havn't permission to edit anything.
'''

def _registry_getter(self):
return default_site._registry

def _registry_setter(self,value):
default_site._registry = value

_registry = property(_registry_getter, _registry_setter)

class MyAdmin(sites.AdminSite, AdminSiteRegistryFix):
@never_cache
def index(self, request, extra_context={}):
last_report_date = models.Reports.objects.latest().entry_date
now = datetime.now()
delta = now - last_report_date
extra_context['last_report_interval'] = delta.days

return super(MyAdmin, self).index(request, extra_context)

admin_site = MyAdmin()

And it works. I've got the last_report_interval in the index.html
template and I can write my lovely message to the admin. The problem
is, that the ^admin/$ address swiches between the login and index view,
despite of users authentication status. And this is nice, but not
working after my changes, written above. Now I see only the app list of
the index. When I'm not logged in, I just see an empty list, but I've
got no login form...

Can anyone help me, understanding why has my login form disappeared?

What I can see from the django.contrib.admin.sites is that the
admin_view function is the one, calling the login view. But I have
noting to do with it, I haven't modify it and I don't understand what
disturbs it's functionallity.

Thank you in advance for your help!

Ivan Ivanov

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