bootleg anti-spam measure

ttadmin/guestbook/views.py

@@ -1,3 +1,5 @@
+import re
+
 from django.shortcuts import redirect
 from django.views.generic import TemplateView
 from django.views.generic.edit import FormView
@@ -5,6 +7,8 @@ from django.views.generic.edit import FormView
 from .forms import GuestbookForm
 from .models import GuestbookMessage
 
+SUSPICIOUS_RE = re.compile(r'https?://')
+
 
 class GuestbookView(FormView):
     form_class = GuestbookForm
@@ -17,5 +21,7 @@ class GuestbookView(FormView):
 
     def form_valid(self, form):
         del form.cleaned_data['captcha']
+        if SUSPICIOUS_RE.search(form.cleaned_data['msg']) != None:
+            return redirect('guestbook:guestbook')
         t = GuestbookMessage.objects.create(**form.cleaned_data)
         return redirect('guestbook:guestbook')