Introduce form so that error is forwarded to the user

ipv6ula/forms.py

@@ -1 +1,12 @@
 from django import forms
+
+from .models import validate_ula_prefix, ULA
+
+class ULAForm(forms.ModelForm):
+    class Meta:
+        model = ULA
+        fields = [ 'prefix', 'name', 'organization', 'website' ]
+
+    def clean_prefix(self):
+        prefix = self.cleaned_data['prefix']
+        validate_ula_prefix(prefix)

ipv6ula/models.py

@@ -13,11 +13,14 @@ def validate_ula_prefix(prefix):
     net = ipaddress.IPv6Network(net_str, strict=False)
 
     if not net.subnet_of(ula_net):
-        raise ValidationError(
+        print("raising error here")
+        v = ValidationError(
             _(f"Prefix {prefix} is not within ULA range ({ula_net})"),
             code='invalid',
             params = {'prefix': prefix }
         )
+        print(v)
+        raise v
 
 
 class User(AbstractUser):

ipv6ula/views.py

@@ -10,7 +10,8 @@ import ipaddress
 
 from django.conf import settings
 
-from ipv6ula.models import *
+from .models import *
+from .forms import ULAForm
 
 class IndexView(ListView):
     model = ULA
@@ -19,9 +20,10 @@ class IndexView(ListView):
 
 class SubmitView(LoginRequiredMixin, CreateView):
     model = ULA
-    fields = [ 'prefix', 'name', 'organization', 'website' ]
+
     login_url = '/login/'
     success_url = '/'
+    form_class = ULAForm
 
     def form_valid(self, form):
         form.instance.owner = self.request.user