How to add users to a list by REST API before they are added to a list manually

Question

I'm using SharePoint Online and SharePoint REST API v1.

I realize that after a user is added to people column of a list manually, I can get user ID and add this user to a column by the API.

But I need to add users in my organization who are not added to my list.

How can I do this?

Answer 1

I think you are looking for EnsureUser method.

Checks whether the specified login name belongs to a valid user in the site. If the user doesn't exist, adds the user to the site.

Request example:

$.ajax({
  url: "http://<site url>/_api/web
    /ensureuser",
  type: "POST",
  data: "{ 'logonName': 'i:0#.f|membership|[email protected]' }",
  headers: {
    "X-RequestDigest": <form digest value>,
    "accept": "application/json;odata=verbose"
  },
  success: successHandler,
  error: errorHandler
});

This method will return user id in success function.

Additional References:

1. Sharepoint 2013: EnsureUser via REST API
2. Using REST, How can you add a user to the User Information List so that he/she has a user ID?