Read Modified By column with pnpjs

Question

I want to select the fields I call and get the Modified By field - what's the correct way to do this?

sp.web.lists
   .getByTitle(myList)
   .items.select(['myId', 'Modified', 'Modified By'])
   .getAll()
   .then(items=> {
      .....
    }) .catch(e=> console.log(e) )

It works fine if I take out the Modified By - I also tried Editor and had the same error.

Answer 1

Editor (Modified by) and Author are people fields. People fields is just a type of a lookup field.

When using REST (or PnPjs), you will notice that all lookup fields should be referenced by their internal name, plus Id at the end.

For example

• Author field should be referenced as AuthorId
• MyCustomLookupField should be referenced as MyCustomLookupFieldId
• etc.

Example of a list item. Notice Id at the end of the lookup fields

Attachments: false
AuthorId: 10
ComplianceAssetId: null
ContentTypeId: "0x004E9DF1CD4F6A40448A5354540B3D2852"
Created: "2020-10-07T23:14:39Z"
EditorId: 10
FileSystemObjectType: 0
GUID: "19689c78-d238-4d02-ac5a-161cf8e7e0e0"
ID: 1
Id: 1
Modified: "2020-10-07T23:14:39Z"
OData__UIVersionString: "1.0"
ServerRedirectedEmbedUri: null
ServerRedirectedEmbedUrl: ""
Title: "Test List"

Example of getting Modified by with

const items = await sp.web.lists.getByTitle("TestList").items.select("ID, Modified, EditorId").getAll();
console.log(items);

If you want to get User name instead if just an id, you will need to expand the lookup field like so:

const items = await sp.web.lists.getByTitle("TestList").items.select("ID, Modified, Editor/Title").expand("Editor").getAll();
console.log(items);