Django Session-Basierte Flash-Nachrichten

from django.contrib import messages
from django.shortcuts import redirect
 
def custom_middleware(get_response):
    def middleware(request):
        if not request.session.session_key:
            request.session.create()
        response = get_response(request)
        return response
    return middleware
 
class NotificationService:
    @staticmethod
    def add_success(request, message):
        messages.success(request, message, extra_tags='success')
    
    @staticmethod
    def add_error(request, message):
        messages.error(request, message, extra_tags='danger')
    
    @staticmethod
    def add_warning(request, message):
        messages.warning(request, message)
    
    @staticmethod
    def add_info(request, message):
        messages.info(request, message)
 
def profile_update(request):
    form = ProfileUpdateForm(request.POST, instance=request.user)
    if form.is_valid():
        form.save()
        NotificationService.add_success(
            request,
            'Profile updated successfully'
        )
        return redirect('profile')
    
    for field, errors in form.errors.items():
        for error in errors:
            NotificationService.add_error(request, error)
    
    return redirect('profile_edit')