The code Works fine in 1.4.0 but does not update the person field in 1.5.0

[Ofer-Gal]

Category

• Bug

Describe the bug

The Code:
ISharePointUser user = await pnpContext.Web.EnsureUserAsync(item.RequestForEmail); (listItem["Requester"] as IFieldUserValue).Principal = user;
Works fine in 1.4.0 but does not update the person field in 1.5.0

Steps to reproduce

1. See code code...
   no error

Expected behavior

• SDK version: 1.5.0
• OS: . Windows 10
• SDK used in: Azure Function
• Framework: .NET 6
• Browser(s): Chrome
• Tooling Visual Studio 2022

Thanks for your contribution

[jansenbe]

@Ofer-Gal : are you using UpdateAsync or SystemUpdateAsync/UpdateOverWriteVersionAsync to persist the changes?

[jansenbe]

@Ofer-Gal : managed to reproduce your issue, it happens when wanting to set a "null" value to a user principal. Fix is in the works. Thanks for providing the feedback.

[Ofer-Gal]

my update was with await listItem.UpdateAsync(); but the person field was not null but ISharePointUser
Guess I need to learn about SystemUpdateAsync/UpdateOverWriteVersionAsync :-)
The save right after was for a null managed metadata field on same file metadata.

Thank you for fixing. Love your Library

[jansenbe]

Hi @Ofer-Gal : the issue has fixed. The problem was that once an existing field had blank/empty values PnP Core SDK did not correctly load the empty field as IFieldUserValue , IFieldUrlValue, IFieldTaxonomyValue, IFieldLookupValue or IFieldLocationValue resulting one not being to "update" the field (as it was null) or not seeing the change persisted (because the field was not null but not correctly initialized). Please give version 1.5.25 a try and let me know if you still see issues. If all works please close this issue.

[Ofer-Gal]

1.5.25 works like a charm :-)
Is it "Production ready"?

[jansenbe]

@Ofer-Gal , yes feel free to use it in production.