Django – #17 – System Autoryzacji cz. 5

from django.shortcuts import render, redirect
from django.contrib.auth.models import User
from django.contrib.auth import authenticate
from django.contrib import auth


# Create your views here.


def home(request):
    context = {}
    if request.user.is_authenticated:
        # Do something for authenticated users.
        context['userStatus'] = 'zalogowany'
    else:
        # Do something for anonymous users.
        context['userStatus'] = 'niezalogowany'
    return render(request, 'auth_system/home.html', context)

def signup_page(request):
    context = {}
    if request.method == 'POST':
        # Request for sign up
        # Check if user is available
        try:
            user = User.objects.get(username=request.POST['username'])
            context['error'] = 'Podana nazwa użytkownika już istnieje! Proszę podać inną nazwę użytkownika.'
            return render(request, 'auth_system/signup.html', context)
        except User.DoesNotExist:
            # Check if the password1 is equal to the password2
            if request.POST['password1'] != request.POST['password2']:
                context['error'] = 'Podane hasła nie są takie same! Proszę wprowadzić identyczne hasła.'
                return render(request, 'auth_system/signup.html', context)
            else:
                # Create new user
                user = User.objects.create_user(request.POST['username'], password=request.POST['password1'])
                # Automatic login after signing up
                auth.login(request, user)
                # Go to home page
                return redirect('home')
    else:
        return render(request, 'auth_system/signup.html', context)

def login_page(request):
    context = {}
    if request.method == 'POST':
        user = auth.authenticate(username=request.POST['username'] ,password=request.POST['password'])
        if user is not None:
            auth.login(request, user)
            return redirect('home')
        else:
            context['error'] = 'Podane hasło lub login są błędne! Podaj poprawne dane.'
            return render(request, 'auth_system/login.html', context)
    else:
        return render(request, 'auth_system/login.html')

def logout_page(request):
    if request.method == 'POST':
        auth.logout(request)
        return redirect('home')

<div class="d-flex flex-column flex-md-row align-items-center p-3 px-md-4 mb-3 bg-white border-bottom shadow-sm">
      <h5 class="my-0 mr-md-auto font-weight-normal">AUTH SYSTEM</h5>
      <nav class="my-2 my-md-0 mr-md-3">
        <a class="btn btn-outline-primary" href="{% url 'home' %}">HOME</a>
        {% if user.is_authenticated %}
        <a class="btn btn-outline-danger" href="JavaScript:{document.getElementById('logout').submit()}">Wyloguj się</a>
        {% else %}
        <a class="btn btn-outline-primary" href="{% url 'signup_page' %}">Zarejestruj się</a>
        <a class="btn btn-outline-primary" href="{% url 'login_page' %}">Zaloguj się</a>
        {% endif %}
      </nav>
      {% if user.is_authenticated %}
      <form id="logout" method="POST" action="{% url 'logout_page' %}">
        {% csrf_token %}
        <input type="hidden">
      </form>
      {% endif %}
    </div>