add routing templates model and initial migration

routing_templates/admin.py

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+# Register your models here.

routing_templates/apps.py

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+from django.apps import AppConfig
+
+
+class RoutingTemplatesConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'routing_templates'

routing_templates/migrations/0001_initial.py

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+# Generated by Django 5.2.9 on 2026-01-15 21:22
+
+import uuid
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('wireguard', '0027_alter_wireguardinstance_peer_list_refresh_interval'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='RoutingTemplate',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('default_template', models.BooleanField(default=False)),
+                ('name', models.CharField(max_length=32)),
+                ('route_type', models.CharField(choices=[('default', 'Default Route (0.0.0.0/0)'), ('peer_same_instance', 'Routes from Peers on same Interface'), ('peer_all_instances', 'Routes from All Peers'), ('custom', 'Custom Routes')], max_length=20)),
+                ('custom_routes', models.TextField(blank=True, help_text='One route per line in CIDR notation.', null=True)),
+                ('allow_peer_custom_routes', models.BooleanField(default=False)),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, unique=True)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('wireguard_instance', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='wireguard.wireguardinstance')),
+            ],
+            options={
+                'unique_together': {('wireguard_instance', 'name')},
+            },
+        ),
+    ]

routing_templates/models.py

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+import uuid
+
+from django.db import models, transaction
+from django.utils.translation import gettext_lazy as _
+
+from wireguard.models import WireGuardInstance
+
+
+class RoutingTemplate(models.Model):
+    ROUTE_TYPE_CHOICES = [
+        ("default", _('Default Route (0.0.0.0/0)')),
+        ("peer_same_instance", _('Routes from Peers on same Interface')),
+        ("peer_all_instances", _('Routes from All Peers')),
+        ("custom", _('Custom Routes')),
+    ]
+
+    wireguard_instance = models.ForeignKey(WireGuardInstance, on_delete=models.CASCADE)
+    default_template = models.BooleanField(default=False)
+
+    name = models.CharField(max_length=32)
+    route_type = models.CharField(max_length=20, choices=ROUTE_TYPE_CHOICES)
+
+    custom_routes = models.TextField(blank=True, null=True, help_text=_('One route per line in CIDR notation.'))
+    allow_peer_custom_routes = models.BooleanField(default=False)
+
+    uuid = models.UUIDField(default=uuid.uuid4, editable=False, unique=True)
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        unique_together = (("wireguard_instance", "name"),)
+
+    def __str__(self):
+        return self.name
+
+    def save(self, *args, **kwargs):
+        with transaction.atomic():
+            super().save(*args, **kwargs)
+            if self.default_template:
+                (
+                    RoutingTemplate.objects
+                    .filter(wireguard_instance=self.wireguard_instance, default_template=True)
+                    .exclude(pk=self.pk)
+                    .update(default_template=False)
+                )

routing_templates/tests.py

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+# Create your tests here.

routing_templates/views.py

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+# Create your views here.