Redirect if already logged in through Django urls?

Question

Currently I use these patterns to log in and out

urlpatterns += patterns("",
    (r'^login/$', 'django.contrib.auth.views.login', {'template_name': 'login.html'}),
    (r'^logout/$', 'django.contrib.auth.views.logout', {'template_name': 'logout.html'})
)

Inspite of having LOGIN_REDIRECT_URL = '/profile/' in my settings.py, Django does not send me to /profile/ if I want to access /login/ when I'm already logged in...

Can I somehow redirect in the URL patterns of the auth system? I'm reluctant to write a custom view for that.

Answer 1

I ended up writing a decorator for such task.

Please take note that I've made it quick & dirty.

from django.conf import settings
from django.shortcuts import redirect


def redirect_if_logged(f=None, redirect_to_url=None):
    u"""
    Decorator for views that checks that the user is already logged in, redirecting
    to certain URL if so.
    """
    def _decorator(view_func):
        def _wrapped_view(request, *args, **kwargs):
            if request.user.is_authenticated():
                redirect_url = redirect_to_url

                if redirect_to_url is None:
                    # URL has 'next' param?
                    redirect_url_1 = request.GET.get('next')
                    # If not, redirect to referer
                    redirect_url_2 = request.META.get('HTTP_REFERER')
                    # If none, redirect to default redirect URL
                    redirect_url_3 = settings.LOGIN_REDIRECT_URL

                    redirect_url = redirect_url_1 or redirect_url_2 or redirect_url_3

                return redirect(redirect_url, *args, **kwargs)
            else:
                return view_func(request, *args, **kwargs)
        return _wrapped_view

    if f is None:
        return _decorator
    else:
        return _decorator(f)

Answer 2

On your projects urls.py file (url_patterns list), add redirect_authenticated_user=True as a parameter in login path like this:

path('admin/', admin.site.urls),
path('login/', auth_views.LoginView.as_view(
                 template_name='blog_app/login.html', 
                 redirect_authenticated_user=True
                 ), name='login'),