decorators.py

# -*- coding: utf-8 -*-

from django.shortcuts import redirect


def redirect_if_logged(f=None, redirect_to_url=None):
    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:
                    get_redirect_1 = request.GET.get('next')
                    get_redirect_2 = request.META.get('HTTP_REFERER')

                    # ¿La URL tiene el argumento 'next'?
                    if get_redirect_1 is not None:
                        redirect_url = get_redirect_1
                    elif get_redirect_2 is not None and get_redirect_2 != request.path:
                        # Redirigir hacia el referer
                        redirect_url = get_redirect_2
                    else:
                        # Redirigir hacia el home
                        redirect_url = 'home'

                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)