Dom not re-rendering on Model change (Elm) - elm

Question

I'm trying a simple Elm CRUD example, but the DOM is not re-rendering when I add a new item to a list of items in the model.
Right now, I'm just adding a static record, and I can confirm that the model is changing via the elm-reactor debugger, but the mapped itemView items is not updating w/ a new div element.
I feel like I might be missing a pretty important part of the Elm architecture/virtual dom. Can anybody point me in right direction?
import Html exposing (Html, text, beginnerProgram, div, input, button)
import Html.Events exposing (onInput, onClick)
import List exposing (map, repeat, append)
main =
Html.beginnerProgram
{ model = model
, view = view
, update = update }
type alias Model =
{ items : List Item
, inputTxt : String }
model : Model
model =
{ items = items
, inputTxt = inputTxt }
type alias Item =
{ id : Int
, txt : String }
item : Item
item =
{ id = 0
, txt = "some text" }
items : List Item
items =
repeat 2 item
inputTxt : String
inputTxt =
""
type Msg
= NoOp
| ChangeTxt String
| AddItem
update : Msg -> Model -> Model
update msg model =
case msg of
NoOp ->
model
ChangeTxt newTxt ->
{ model | inputTxt = newTxt }
AddItem ->
{ model | items = model.items ++ [{ id = 0, txt = "some text" }] }
view : Model -> Html Msg
view model =
div [] [
div [] [ itemsView items ]
, div [] [
input [ onInput ChangeTxt ] []
]
, div [] [
text model.inputTxt
]
, div [] [
button [ onClick AddItem ] [ text "click me!" ]
]
]
itemView : Item -> Html Msg
itemView item =
div [] [
div [] [ text ( toString item.id ) ]
, div [] [ text item.txt ]
]
itemsView : List Item -> Html Msg
itemsView items =
div [] [
div [] (List.map itemView items)
]

Answer 1

The second line of your view function should be
div [] [ itemsView model.items ]
Right now it always renders items defined above, not the items in the model.