netbox v3.2-beta1 - dcim/device-types/inventory-items error "'component' does not resolve to an item"

[PieterL75]

NetBox version

v3.2-beta1

Python version

3.9

Steps to Reproduce

1. Create a devicetype
2. Create a Module Bay on that device type
3. Create a new inventory item on that device type.
   (only complete the mandatory fields, leave the rest default)

Expected Behavior

The Inventory item is created without errors

Observed Behavior

After clicking the 'create' button, an error is thrown:

<class 'ValueError'>
'component' does not resolve to an item that supports prefetching - this is an invalid parameter to prefetch_related().
Python version: 3.8.10
NetBox version: 3.2.0-beta1

When refreshing, the inventory items was created properly.

I noticed that after this, creating inventory items work without errors

[jeremystretch]

I'm not able to reproduce this currently, though I recall running into a similar issue with InventoryItemTable (for device items). It has something to do with the table attempting to prefetch component, which, as a generic foreign key, cannot be prefetched reliably.

[jeremystretch]

@PieterL75 have you uncovered a way to reproduce this reliably? I haven't seen any further reports so far.

[PieterL75]

I'm not able to reproduce it... migth have been bad caching or something.

You may close the bugreport.. if I experience it again, I'll create a new bugreport

greetz

Pieter

[jeremystretch]

Thanks!

[jeremystretch]

I just happened to reproduce this today.