Andrey K

class Account(models.Model):
    login = models.CharField(max_length=255)
    password = models.CharField(max_length=255)
    first_name = models.CharField(max_length=255, null=True, blank=True)
    last_name = models.CharField(max_length=255, null=True, blank=True)

class ProfilePhoto(models.Model):
    account = models.ForeignKey(Account)
    photo_name = models.CharField(max_length=255)
    photo_url = models.CharField(max_length=255)

location /static/ {
    root /opt/myenv/sportcourts/;
}

location /static/ {
    alias /opt/myenv/sportcourts/static/;
}

class RegistrationView(CreateView):
    def form_invalid(self, form):
        return JsonResponse({
            'status': 'error',
            'errors': form.errors,
        })

if Message.objects.filter(recipient=self.request.user, viewed__isnull=True).exists():
    Message.objects.filter(recipient=self.request.user, viewed__isnull=True).update(viewed=timezone.now())