how to update an inner record in elm

Question

I have this model

type alias Model = 
  { exampleId : Int
  , groupOfExamples : GroupExamples
  }

type alias GroupExamples = 
  { groupId : Int
  , results         


        

Answer 1

The only way to do it in the language without anything extra is to destructure the outer record like:

let
    examples = model.groupOfExamples
    newExamples = { examples | results = [ "whatever" ] }
in
    { model | groupOfExamples = newExamples }

There is also the focus package which would allow you to:

set ( groupOfExamples => results ) [ "whatever" ] model