How to handle csrf_token?

Question

Django

Guys, hello everyone.
Problem: the form returns {% csrf_token %}, but the view cannot accept it and process it.
The form itself

{% block login1 %}
    <div class="large-offset-3 large-6 columns">
    <form action="/auth/login/" method="post">
      {% csrf_token %}
      <label for="username">Имя пользователя</label>
      <input type="text" name="username" id="username">
      <label for="password">Пароль</label>
      <input type="password" name="password" id="password">
      {% if login_error %}
          <label class="error">{{ login_error }}</label>
      {% endif %}
        <input class="button" type="submit" value="Войти">
    </form>
  </div>
{% endblock %}

The view itself - took the method from the net

def login(request):
    args = {}
    args.update(csrf(request))
    if request.POST:
        username = request.POST.get('username', '')
        password = request.POST.get('password', '')
        user = auth.authenticate(username=username, password=password)
        if user is not None:
            auth.login(request, user)
            return redirect('/')
        else:
            args['login_error'] = "Пользователь не найден"
            return render_to_response('login.html', args)
    else:
        return render_to_response('login.html', args)

As a result, an error appears that there is no token, or it is broken. If, for example, I close the view with the @csrf_exempt decorator (turning off the token), then the form itself works out with a bang. Tell me, plz.
Plus, there is a problem with such a view too (I also don’t know how to process the token):

def addcomment(request, step_id):
    # args = {}
    # args.update(csrf(request))
    if request.POST and ('stop_comment' not in request.session):
        mentionn = Step(id=step_id)
        mention_text = request.POST.get('mention_text', '')
        mention_digit = request.POST.get('mention_digit', '')
        mentionn_obj = Mention(mentionn=mentionn, mention_text=mention_text, mention_digit=mention_digit)
        mentionn_obj.save()
        request.session.set_expiry(864000) #Блок функции сессией на 10 дней.
        request.session['stop_comment'] = True
    return redirect('/step'+ step_id)

Answer 1

because that's not how they work with forms in jung. You don't need to reinvent your bike. it is already thought up and well integrated.
here there is not boring documentation, but a live example - tutorial.djangogirls.org/ru/django_forms/index.html

Answer 2

Add if incorrect

def register_user(request):
    if request.method == 'POST':
        form = MyRegistrationForm(request.POST)     # create form object
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/register/')
        else:
            print (form.errors)
    args = {}
    args.update(csrf(request))
    args['form'] = MyRegistrationForm()
    print (args)
    return render(request, 'register.html', args)