Fine-tune forms, tests, and some model save() functions

netbox/ipam/forms/bulk_import.py

@@ -155,18 +155,6 @@ class RoleImportForm(OrganizationalModelImportForm):
 
 
 class PrefixImportForm(ScopedImportForm, PrimaryModelImportForm):
-    aggregate = CSVModelChoiceField(
-        label=_('Aggregate'),
-        queryset=Aggregate.objects.all(),
-        to_field_name='prefix',
-        required=False
-    )
-    parent = CSVModelChoiceField(
-        label=_('Prefix'),
-        queryset=Prefix.objects.all(),
-        to_field_name='prefix',
-        required=False
-    )
     vrf = CSVModelChoiceField(
         label=_('VRF'),
         queryset=VRF.objects.all(),
@@ -250,26 +238,8 @@ class PrefixImportForm(ScopedImportForm, PrimaryModelImportForm):
         queryset = self.fields['vlan'].queryset.filter(query)
         self.fields['vlan'].queryset = queryset
 
-        # Limit Prefix queryset by assigned vrf
-        vrf = data.get('vrf')
-        query = Q()
-        if vrf:
-            query &= Q(**{
-                f"vrf__{self.fields['vrf'].to_field_name}": vrf
-            })
-
-        queryset = self.fields['parent'].queryset.filter(query)
-        self.fields['parent'].queryset = queryset
-
 
 class IPRangeImportForm(PrimaryModelImportForm):
-    prefix = CSVModelChoiceField(
-        label=_('Prefix'),
-        queryset=Prefix.objects.all(),
-        to_field_name='prefix',
-        required=True,
-        help_text=_('Assigned prefix')
-    )
     vrf = CSVModelChoiceField(
         label=_('VRF'),
         queryset=VRF.objects.all(),
@@ -304,29 +274,8 @@ class IPRangeImportForm(PrimaryModelImportForm):
             'description', 'owner', 'comments', 'tags',
         )
 
-    def __init__(self, data=None, *args, **kwargs):
-        super().__init__(data, *args, **kwargs)
-
-        # Limit Prefix queryset by assigned vrf
-        vrf = data.get('vrf')
-        query = Q()
-        if vrf:
-            query &= Q(**{
-                f"vrf__{self.fields['vrf'].to_field_name}": vrf
-            })
-
-        queryset = self.fields['prefix'].queryset.filter(query)
-        self.fields['prefix'].queryset = queryset
-
 
 class IPAddressImportForm(PrimaryModelImportForm):
-    prefix = CSVModelChoiceField(
-        label=_('Prefix'),
-        queryset=Prefix.objects.all(),
-        required=False,
-        to_field_name='prefix',
-        help_text=_('Assigned prefix')
-    )
     vrf = CSVModelChoiceField(
         label=_('VRF'),
         queryset=VRF.objects.all(),
@@ -403,15 +352,6 @@ class IPAddressImportForm(PrimaryModelImportForm):
 
         if data:
 
-            # Limit Prefix queryset by assigned vrf
-            vrf = data.get('vrf')
-            query = Q()
-            if vrf:
-                query &= Q(**{f"vrf__{self.fields['vrf'].to_field_name}": vrf})
-
-            queryset = self.fields['prefix'].queryset.filter(query)
-            self.fields['prefix'].queryset = queryset
-
             # Limit interface queryset by assigned device
             if data.get('device'):
                 self.fields['interface'].queryset = Interface.objects.filter(

netbox/ipam/forms/model_forms.py

@@ -241,11 +241,6 @@ class PrefixForm(TenancyForm, ScopedForm, PrimaryModelForm):
 
 
 class IPRangeForm(TenancyForm, PrimaryModelForm):
-    prefix = DynamicModelChoiceField(
-        queryset=Prefix.objects.all(),
-        required=False,
-        label=_('Prefix')
-    )
     vrf = DynamicModelChoiceField(
         queryset=VRF.objects.all(),
         required=False,
@@ -260,7 +255,7 @@ class IPRangeForm(TenancyForm, PrimaryModelForm):
 
     fieldsets = (
         FieldSet(
-            'prefix', 'vrf', 'start_address', 'end_address', 'role', 'status', 'mark_populated', 'mark_utilized',
+            'vrf', 'start_address', 'end_address', 'role', 'status', 'mark_populated', 'mark_utilized',
             'description', 'tags', name=_('IP Range')
         ),
         FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
@@ -269,21 +264,12 @@ class IPRangeForm(TenancyForm, PrimaryModelForm):
     class Meta:
         model = IPRange
         fields = [
-            'prefix', 'vrf', 'start_address', 'end_address', 'status', 'role', 'tenant_group', 'tenant',
+            'vrf', 'start_address', 'end_address', 'status', 'role', 'tenant_group', 'tenant',
             'mark_populated', 'mark_utilized', 'description', 'owner', 'comments', 'tags',
         ]
 
 
 class IPAddressForm(TenancyForm, PrimaryModelForm):
-    prefix = DynamicModelChoiceField(
-        queryset=Prefix.objects.all(),
-        required=False,
-        context={
-            'vrf': 'vrf',
-        },
-        selector=True,
-        label=_('Prefix'),
-    )
     interface = DynamicModelChoiceField(
         queryset=Interface.objects.all(),
         required=False,
@@ -329,7 +315,7 @@ class IPAddressForm(TenancyForm, PrimaryModelForm):
     )
 
     fieldsets = (
-        FieldSet('prefix', 'address', 'status', 'role', 'vrf', 'dns_name', 'description', 'tags', name=_('IP Address')),
+        FieldSet('address', 'status', 'role', 'vrf', 'dns_name', 'description', 'tags', name=_('IP Address')),
         FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
         FieldSet(
             TabbedGroups(
@@ -345,7 +331,7 @@ class IPAddressForm(TenancyForm, PrimaryModelForm):
     class Meta:
         model = IPAddress
         fields = [
-            'prefix', 'address', 'vrf', 'status', 'role', 'dns_name', 'primary_for_parent', 'oob_for_parent',
+            'address', 'vrf', 'status', 'role', 'dns_name', 'primary_for_parent', 'oob_for_parent',
             'nat_inside', 'tenant_group', 'tenant', 'description', 'owner', 'comments', 'tags',
         ]
 
@@ -471,15 +457,6 @@ class IPAddressForm(TenancyForm, PrimaryModelForm):
 
 
 class IPAddressBulkAddForm(TenancyForm, NetBoxModelForm):
-    prefix = DynamicModelChoiceField(
-        queryset=Prefix.objects.all(),
-        required=False,
-        context={
-            'vrf': 'vrf',
-        },
-        selector=True,
-        label=_('Prefix'),
-    )
     vrf = DynamicModelChoiceField(
         queryset=VRF.objects.all(),
         required=False,
@@ -489,7 +466,7 @@ class IPAddressBulkAddForm(TenancyForm, NetBoxModelForm):
     class Meta:
         model = IPAddress
         fields = [
-            'address', 'prefix', 'vrf', 'status', 'role', 'dns_name', 'description', 'tenant_group', 'tenant', 'tags',
+            'address', 'vrf', 'status', 'role', 'dns_name', 'description', 'tenant_group', 'tenant', 'tags',
         ]
 
 

netbox/ipam/models/ip.py

@@ -335,17 +335,6 @@ class Prefix(ContactsMixin, GetAvailablePrefixesMixin, CachedScopeMixin, Primary
                     'prefix': _("Cannot create prefix with /0 mask.")
                 })
 
-            if self.parent:
-                if self.prefix not in self.parent.prefix:
-                    raise ValidationError({
-                        'parent': _("Prefix must be part of parent prefix.")
-                    })
-
-                if self.parent.status != PrefixStatusChoices.STATUS_CONTAINER and self.vrf != self.parent.vrf:
-                    raise ValidationError({
-                        'vrf': _("VRF must match the parent VRF.")
-                    })
-
             # Enforce unique IP space (if applicable)
             if (self.vrf is None and get_config().ENFORCE_GLOBAL_UNIQUE) or (self.vrf and self.vrf.enforce_unique):
                 duplicate_prefixes = self.get_duplicates()
@@ -359,13 +348,9 @@ class Prefix(ContactsMixin, GetAvailablePrefixesMixin, CachedScopeMixin, Primary
                     })
 
     def save(self, *args, **kwargs):
-        vrf_id = self.vrf.pk if self.vrf else None
 
-        if not self.pk and not self.parent:
-            parent = self.find_parent_prefix(self)
-            self.parent = parent
-        elif self.parent and (self.prefix != self._prefix or vrf_id != self._vrf_id):
-            parent = self.find_parent_prefix(self)
+        if not self.pk or not self.parent or (self.prefix != self._prefix) or (self.vrf_id != self._vrf_id):
+            parent = self.find_parent_prefix(network=self.prefix, vrf=self.vrf, exclude=self.pk)
             self.parent = parent
 
         if isinstance(self.prefix, netaddr.IPNetwork):
@@ -537,17 +522,40 @@ class Prefix(ContactsMixin, GetAvailablePrefixesMixin, CachedScopeMixin, Primary
         return min(utilization, 100)
 
     @classmethod
-    def find_parent_prefix(cls, network):
+    def find_parent_prefix(cls, network, vrf=None, exclude=None):
         prefixes = Prefix.objects.filter(
             models.Q(
-                vrf=network.vrf,
-                prefix__net_contains=str(network.prefix)
+                vrf=vrf,
+                prefix__net_contains=str(network)
             ) | models.Q(
                 vrf=None,
                 status=PrefixStatusChoices.STATUS_CONTAINER,
-                prefix__net_contains=str(network.prefix),
+                prefix__net_contains=str(network),
             )
         )
+        if exclude:
+            prefixes = prefixes.exclude(pk=exclude)
+        return prefixes.last()
+
+    @classmethod
+    def find_parent_prefix_range(cls, networks, vrf=None, exclude=None):
+        network_filter = models.Q()
+        for network in networks:
+            network_filter &= models.Q(
+                prefix__net_contains=network
+            )
+        prefixes = Prefix.objects.filter(
+            models.Q(
+                network_filter,
+                vrf=vrf
+            ) | models.Q(
+                network_filter,
+                vrf=None,
+                status=PrefixStatusChoices.STATUS_CONTAINER,
+            )
+        )
+        if exclude:
+            prefixes = prefixes.exclude(pk=exclude)
         return prefixes.last()
 
 
@@ -734,6 +742,12 @@ class IPRange(ContactsMixin, PrimaryModel):
         # Record the range's size (number of IP addresses)
         self.size = int(self.end_address.ip - self.start_address.ip) + 1
 
+        # Set the parent prefix
+        self.prefix = Prefix.find_parent_prefix_range(
+            networks=[self.start_address.ip, self.end_address.ip],
+            vrf=self.vrf
+        )
+
         super().save(*args, **kwargs)
 
     @property
@@ -828,14 +842,6 @@ class IPRange(ContactsMixin, PrimaryModel):
 
         return min(float(child_count) / self.size * 100, 100)
 
-    @classmethod
-    def find_prefix(self, address):
-        prefixes = Prefix.objects.filter(
-            models.Q(prefix__net_contains=address.start_address) & Q(prefix__net_contains=address.end_address),
-            vrf=address.vrf,
-        )
-        return prefixes.last()
-
 
 class IPAddress(ContactsMixin, PrimaryModel):
     """
@@ -1093,6 +1099,9 @@ class IPAddress(ContactsMixin, PrimaryModel):
         # Force dns_name to lowercase
         self.dns_name = self.dns_name.lower()
 
+        # Set the parent prefix
+        self.prefix = Prefix.find_parent_prefix(self.address.ip, vrf=self.vrf)
+
         super().save(*args, **kwargs)
 
     def clone(self):

netbox/ipam/tests/test_models.py

@@ -457,12 +457,11 @@ class TestPrefix(TestCase):
         # Global container should return all children
         self.assertSetEqual(child_ip_pks, {ips[0].pk, ips[1].pk, ips[2].pk, ips[3].pk})
 
-        parent_prefix.prefix = '10.0.0.0/25'
+        parent_prefix.prefix = '10.0.0.0/23'
         parent_prefix.save()
 
         parent_prefix.refresh_from_db()
         child_ip_pks = {p.pk for p in parent_prefix.ip_addresses.all()}
-
         self.assertSetEqual(child_ip_pks, {ips[0].pk, ips[1].pk})
 
 
@@ -853,7 +852,7 @@ class TestIPAddress(TestCase):
             IPAddress(address=IPNetwork('192.0.2.1/24'), prefix=self.prefixes[1]),
             IPAddress(address=IPNetwork('192.0.2.1/24'), vrf=self.vrf, prefix=self.prefixes[2]),
             IPAddress(address=IPNetwork('2001:db8::/64'), prefix=self.prefixes[4]),
-            IPAddress(address=IPNetwork('2001:db8:2::/64'), prefix=self.prefixes[3]),
+            IPAddress(address=IPNetwork('2001:db8:2::/64')),
         )
 
         for ip in ips: