SPUser field is returning only ID in REST

Question

I have my multi-value SPUser field in my list. When accessing it via REST, I am only able to retrieve the ID of the SPUsers. In the result of the REST, the SPUser field was also appended by an Id in the column name. I would need to retrieve the Names of the user, what would be the easiest and most practical way to do it?

Answer 1

It is the way SharePoint works. For lookup column it returns the Id only. If you need more information from lookup column, then just use $expand in your query. For example

/_api/Web/Lists/GetByTitle('SpTutorial')/Items?$select=SPUser/Title&$expand=SPUser

Result without $expand

"SpUsersId": {
    "__metadata": {
      "type": "Collection(Edm.Int32)"
    },
    "results": [
      33,
      22
    ]
  }

Result with $expand

"SpUsers": {
    "results": [
      {
        "__metadata": {
          "id": "e9a1d4f9-5d6d-4a4c-8753-ce1b5020b125",
          "type": "SP.Data.UserInfoItem"
        },
        "Title": "Mohammad Mazumder"
      },
      {
        "__metadata": {
          "id": "6d968e6a-830a-4997-bba3-035dc1acdc85",
          "type": "SP.Data.UserInfoItem"
        },
        "Title": "Admin"
      }
    ]
  }

Check more about REST API in my article.

CRUD Operation to List Using SharePoint 2013 Rest API