how does django check whether a user is logged in code example

Example 1: check if the user is logged in django decorator

from django.contrib.auth.decorators import login_required

@login_required
def edit_user_profile(request):

Example 2: django 3 check if user is logged in

from django.contrib.auth import authenticate, login
from django.contrib.auth.decorators import login_required




EXAMPLE 1 (USED IN VIEW CONTROLLER FUNCTIONS)
===========
@login_required
def profile_general(request):
    return render(request, 'pages/profile_general.html', {'datax': 'Directoreel'})


EXAMPLE 2 (USED IN VIEW CONTROLLER FUNCTIONS)
===========
def login_action(request):
    # login authentication
    if request.user.is_authenticated:
        return render(request, 'pages/dashboard.html', {'datax': 'Directoreel'})
    # back to login page
    else:
        pass