I've been trying to filters with rest API, but I seem to be struggeling with easy requests. So this one works without any problems


If I try to filter based on this property I receive an error

http://myserver/_api/web/lists/getbytitle%28'Tickets'%29/items?$filter=AssignedToId eq 1

Why is this the case? Isn't it the case that you can filter any property you can find in in the response? Please help me out here.

1 Answer 1


This will sound crazy, but change it to filter on "AssignedTo" but keep "AssignedToId" in the select:

http://myserver/_api/web/lists/getbytitle%28'Tickets'%29/items?$select=AssignedToId&$filter=AssignedTo eq 1

The other way to do it would be to use the $expand param:

http://myserver/_api/web/lists/getbytitle%28'Tickets'%29/items?$expand=AssignedTo/Id&$select=AssignedTo/Id,AssignedTo/LastName&$filter=AssignedTo/Id eq 1

EDIT: improved readability

  • More info: sympmarc.com/2014/01/21/…
    – Shel
    Feb 19, 2016 at 19:27
  • It really is crazy, but thanks for pointing it out. TaskGroupId behaves in the same way (not sure what it does anyway) so at least it's kind of consitent ;)
    – Andreas
    Feb 22, 2016 at 10:32
  • One more question: If AssignedTo allows multiple values, I can't filter those anymore just like it's the case with view query, right?
    – Andreas
    Feb 22, 2016 at 13:48
  • 1
    I know you can use and/or operators along with (parens) to group parts of the query in $filter. I added a column called "People" that allows the user to select more than one person. I want list items that have both the userID 1 AND 2 in that column, or items that have userId 3: myTestSite.com/_api/web/lists/getbytitle('zShellyTest')/… eq 1 and People/Id eq 2) or People/Id eq 3
    – Shel
    Feb 22, 2016 at 15:52

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