Allow assigning child devices to rackless parents

netbox/dcim/forms.py

@@ -1618,20 +1618,23 @@ class DeviceBayCreateForm(DeviceComponentForm):
 
 
 class PopulateDeviceBayForm(BootstrapMixin, forms.Form):
-    installed_device = forms.ModelChoiceField(queryset=Device.objects.all(), label='Child Device',
-                                              help_text="Child devices must first be created within the rack occupied "
-                                                        "by the parent device. Then they can be assigned to a bay.")
+    installed_device = forms.ModelChoiceField(
+        queryset=Device.objects.all(),
+        label='Child Device',
+        help_text="Child devices must first be created and assigned to the site/rack of the parent device."
+    )
 
     def __init__(self, device_bay, *args, **kwargs):
 
         super(PopulateDeviceBayForm, self).__init__(*args, **kwargs)
 
-        children_queryset = Device.objects.filter(rack=device_bay.device.rack,
-                                                  parent_bay__isnull=True,
-                                                  device_type__u_height=0,
-                                                  device_type__subdevice_role=SUBDEVICE_ROLE_CHILD)\
-            .exclude(pk=device_bay.device.pk)
-        self.fields['installed_device'].queryset = children_queryset
+        self.fields['installed_device'].queryset = Device.objects.filter(
+            site=device_bay.device.site,
+            rack=device_bay.device.rack,
+            parent_bay__isnull=True,
+            device_type__u_height=0,
+            device_type__subdevice_role=SUBDEVICE_ROLE_CHILD
+        ).exclude(pk=device_bay.device.pk)
 
 
 #