login_required नामक Decorator

login_required decorator एक locked door sign जैसा है — यह किसी भी ऐसे व्यक्ति को जो logged in नहीं है सीधे login page पर भेज देता है।

In this page:

एक View को Protect करना
LOGIN_URL Set करना
Login के बाद Return करना

Syntax

markup

from django.contrib.auth.decorators import login_required

@login_required
def view_name(request):
    return render(request, 'template.html')

# settings.py
LOGIN_URL = '/login/'

एक View को Protect करना

@login_required view body run होने से पहले request.user.is_authenticated जांचता है, anonymous users को इसके बजाय redirect करते हुए।

उदाहरण: Protecting a View

If the visitor isn't logged in, Django redirects them to LOGIN_URL before dashboard() ever runs.

markup

from django.contrib.auth.decorators import login_required
from django.shortcuts import render

@login_required
def dashboard(request):
    return render(request, 'dashboard.html')

{# Django-only code -- models.py/views.py/urls.py/settings.py snippets, or template markup using Django template tags/variables -- can't run standalone via Judge0 or the browser preview, since it needs a real Django project. Only this course's pure-Python examples (example_lang == 'python', no Django imports) are actually runnable, so those still get the button below. #}

LOGIN_URL Set करना

LOGIN_URL Django को बताता है कि protected view hit करने वाले anonymous users को कहां भेजना है।

Warning: बिना LOGIN_URL के, Django /accounts/login/ पर default करता है, जो आपके project में मौजूद न हो।

उदाहरण: Setting LOGIN_URL

Setting this to the URL name login means Django resolves it to wherever that named URL actually points.

markup

LOGIN_URL = 'login'

Login के बाद Return करना

Django login redirect में ?next=/dashboard/ append करता है ताकि login view बाद में user को वापस भेज सके।

उदाहरण: Returning After Login

Reading next from the submitted form sends the user back to the page they originally tried to visit.

markup

from django.contrib.auth import authenticate, login
from django.shortcuts import redirect, render

def login_view(request):
    if request.method == 'POST':
        user = authenticate(
            request, username=request.POST['username'],
            password=request.POST['password'],
        )
        if user:
            login(request, user)
            return redirect(request.POST.get('next', 'home'))
    return render(request, 'login.html')

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login_required नामक Decorator

एक View को Protect करना

LOGIN_URL Set करना

Login के बाद Return करना

Chapter Quiz — Complete all 12 topics to unlock

Login to run this code