Django Regex URL pattern overriding other URLs - django

Question

I am working on a project which requires to display the data about a city which is requested through the url like example.com/city1 for city1 information etc.
I have used the below url pattern & view in my app. This view is working fine.
url(r'^(?P<cityId>[-\w]+)$',views.cityindex,name='cityindex'),
def cityindex(request, cityId):
city = City.objects.filter(url = cityId)
if len(city) == 0:
return redirect('/404')
return HttpResponse('City Data Extracted')
But when I try to open other urls like /admin or urls from other app it is being redirected to my cityindex view and then to 404 page as handled in my view above.
Below is the url patterns I used in my main urls.py file.
url(r'^', include('main.urls')),
url(r'^admin/', admin.site.urls),
url(r'^login_redirect/', include('loginapp.urls')),
I am presently using Django 1.11.12. Is there any way to stop this url from overriding?
Edit :
Urls in my main.urls file
url(r'^$',views.index,name='index'),
url(r'^about$', views.aboutpage,name="aboutpage"),
url(r'^terms$', views.termspage,name="termspage"),
url(r'^privacy$', views.privacypage,name="privacypage"),
url(r'^(?P<cityId>[-\w]+)$',views.cityindex,name='cityindex'),

Answer 1

To achieve this, think of sceanarios like this
1- www.example.com/cityname/
2- www.example.com/about/Us/
3- www.example.com/others/terms/
4- www.example.com/others/privacy/
Anytime you want to have other url like www.example.com/faculty/list
you use number 2-4 while you use the first to achieve your city name.
I have tested this to work in the following format
urlpatterns = [
url(r'^about/us/$', views.about_page), #about us or any other page
url(r'^(?P<cityname>\w+)/$', views.cityindex), #cityname
]
and in my view.py, i can catch the city name given like this
def cityindex(request, cityname):
data = cityname
#you can do anything you want here
return HttpResponse(data)
NB: the cityname could a number so you may decide to use it as city id instead, however, ensure it was converted to an integer in your view if you prefer to use cityid
I hope this helps