feat(virtualization): Refactor VirtualMachine view to UI layout

Migrate the VirtualMachine detail view to SimpleLayout with standardized
panels for attributes, clusters, and resources. Modularize templates
to improve maintainability and reuse.

Fixes #21337

netbox/virtualization/ui/panels.py

@@ -0,0 +1,34 @@
+from django.utils.translation import gettext_lazy as _
+
+from netbox.ui import attrs, panels
+
+
+class VirtualMachinePanel(panels.ObjectAttributesPanel):
+    name = attrs.TextAttr('name')
+    status = attrs.ChoiceAttr('status')
+    start_on_boot = attrs.ChoiceAttr('start_on_boot')
+    role = attrs.RelatedObjectAttr('role', linkify=True)
+    platform = attrs.NestedObjectAttr('platform', linkify=True, max_depth=3)
+    description = attrs.TextAttr('description')
+    serial = attrs.TextAttr('serial', label=_('Serial number'), style='font-monospace', copy_button=True)
+    tenant = attrs.RelatedObjectAttr('tenant', linkify=True, grouped_by='group')
+    config_template = attrs.RelatedObjectAttr('config_template', linkify=True)
+    primary_ip4 = attrs.TemplatedAttr(
+        'primary_ip4',
+        label=_('Primary IPv4'),
+        template_name='virtualization/virtualmachine/attrs/ipaddress.html',
+    )
+    primary_ip6 = attrs.TemplatedAttr(
+        'primary_ip6',
+        label=_('Primary IPv6'),
+        template_name='virtualization/virtualmachine/attrs/ipaddress.html',
+    )
+
+
+class VirtualMachineClusterPanel(panels.ObjectAttributesPanel):
+    title = _('Cluster')
+
+    site = attrs.RelatedObjectAttr('site', linkify=True, grouped_by='group')
+    cluster = attrs.RelatedObjectAttr('cluster', linkify=True)
+    cluster_type = attrs.RelatedObjectAttr('cluster.type', linkify=True)
+    device = attrs.RelatedObjectAttr('device', linkify=True)

netbox/virtualization/views.py

@@ -10,12 +10,15 @@ from dcim.filtersets import DeviceFilterSet
 from dcim.forms import DeviceFilterForm
 from dcim.models import Device
 from dcim.tables import DeviceTable
+from extras.ui.panels import CustomFieldsPanel, ImageAttachmentsPanel, TagsPanel
 from extras.views import ObjectConfigContextView, ObjectRenderConfigView
 from ipam.models import IPAddress, VLANGroup
 from ipam.tables import InterfaceVLANTable, VLANTranslationRuleTable
 from netbox.object_actions import (
     AddObject, BulkDelete, BulkEdit, BulkExport, BulkImport, BulkRename, DeleteObject, EditObject,
 )
+from netbox.ui import actions, layout
+from netbox.ui.panels import CommentsPanel, ObjectsTablePanel, TemplatePanel
 from netbox.views import generic
 from utilities.query import count_related
 from utilities.query_functions import CollateAsChar
@@ -23,6 +26,7 @@ from utilities.views import GetRelatedModelsMixin, ViewTab, register_model_view
 from . import filtersets, forms, tables
 from .models import *
 from .object_actions import BulkAddComponents
+from .ui import panels
 
 
 #
@@ -336,6 +340,7 @@ class ClusterAddDevicesView(generic.ObjectEditView):
 # Virtual machines
 #
 
+
 @register_model_view(VirtualMachine, 'list', path='', detail=False)
 class VirtualMachineListView(generic.ObjectListView):
     queryset = VirtualMachine.objects.prefetch_related('primary_ip4', 'primary_ip6')
@@ -348,6 +353,44 @@ class VirtualMachineListView(generic.ObjectListView):
 @register_model_view(VirtualMachine)
 class VirtualMachineView(generic.ObjectView):
     queryset = VirtualMachine.objects.all()
+    layout = layout.SimpleLayout(
+        left_panels=[
+            panels.VirtualMachinePanel(),
+            CustomFieldsPanel(),
+            TagsPanel(),
+            CommentsPanel(),
+        ],
+        right_panels=[
+            panels.VirtualMachineClusterPanel(),
+            TemplatePanel('virtualization/panels/virtual_machine_resources.html'),
+            ObjectsTablePanel(
+                model='ipam.Service',
+                title=_('Application Services'),
+                filters={'virtual_machine_id': lambda ctx: ctx['object'].pk},
+                actions=[
+                    actions.AddObject(
+                        'ipam.Service',
+                        url_params={
+                            'parent_object_type': lambda ctx: ContentType.objects.get_for_model(ctx['object']).pk,
+                            'parent': lambda ctx: ctx['object'].pk,
+                        },
+                    ),
+                ],
+            ),
+            ImageAttachmentsPanel(),
+        ],
+        bottom_panels=[
+            ObjectsTablePanel(
+                model='virtualization.VirtualDisk',
+                filters={'virtual_machine_id': lambda ctx: ctx['object'].pk},
+                actions=[
+                    actions.AddObject(
+                        'virtualization.VirtualDisk', url_params={'virtual_machine': lambda ctx: ctx['object'].pk}
+                    ),
+                ],
+            ),
+        ],
+    )
 
 
 @register_model_view(VirtualMachine, 'interfaces')