Nameserver mnts, glue magic

domains/forms.py

@@ -95,9 +95,15 @@ class NameserverForm(MntFormMixin, WhoisObjectFormMixin, forms.ModelForm):
 
 		if not self.errors:
 			name = cleaned_data.get("name")
+			mntBy = cleaned_data.get("mnt_by")
 			zone = ".".join(name.split(".")[-3:])
-			ipv4 = cleaned_data.get("glueIPv4")
-			ipv6 = cleaned_data.get("glueIPv6")
+			ipv4 = cleaned_data.get("glueIPv4", None)
+			ipv6 = cleaned_data.get("glueIPv6", None)
+
+			if not ipv4:
+				ipv4 = None
+			if not ipv6:
+				ipv6 = None
 
 			if self._create and (ipv4 or ipv6)  or not self._create and not (self.instance.glueIPv4 == ipv4 and self.instance.glueIPv6 == ipv6):
 				mnts = self._user.maintainer_set.all()
@@ -110,6 +116,17 @@ class NameserverForm(MntFormMixin, WhoisObjectFormMixin, forms.ModelForm):
 
 				if not found:
 					raise forms.ValidationError("You have glue IPs set, but this domain is not under a domain you control.")
+
+			failedMnts = set()
+			for ns in Nameserver.objects.filter(name=name, mnt_by__in=mntBy):
+				if self._create or self.instance.pk != ns.pk:
+					for mnt in ns.mnt_by.all():
+						if mnt in mntBy:
+							failedMnts.add(mnt.handle)
+
+			if len(failedMnts) > 0:
+				raise forms.ValidationError("The following maintainer objects already have this nameservers: %s" % ", ".join(failedMnts))
+				
 				
 		return cleaned_data