-
-
Save dtsao/9fe779b24a24513723a515b63d64e939 to your computer and use it in GitHub Desktop.
Added Html.Keyed to fix display bug reported here: https://github.com/elm-lang/virtual-dom/issues/24
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
module Main exposing (..) | |
import Html exposing (..) | |
import Html.Keyed as Keyed | |
import Html.Events exposing (..) | |
import Html.Attributes exposing (..) | |
import Html.App as App | |
main : Program Never | |
main = | |
App.beginnerProgram | |
{ model = init | |
, update = update | |
, view = view | |
} | |
type alias Model = | |
List Todo | |
type alias Todo = | |
{ completed : Bool | |
, id : Int | |
} | |
init : Model | |
init = | |
[ Todo False 1 | |
, Todo False 2 | |
, Todo False 3 | |
] | |
type Msg | |
= SetCompleted Int | |
| NoOp | |
update : Msg -> Model -> Model | |
update msg model = | |
case msg of | |
SetCompleted target -> | |
let | |
updateStatus todo = | |
if target == todo.id then | |
Todo True todo.id | |
else | |
todo | |
in | |
model |> List.map updateStatus | |
NoOp -> | |
model | |
view : Model -> Html Msg | |
view model = | |
div [] | |
[ text "Added Html.Keyed which fixes the bug reported in https://github.com/elm-lang/virtual-dom/issues/24" | |
, br [] [] | |
, text "Check items 1 or 2, the next item now correctly displays unchecked:" | |
, div [] | |
(model | |
|> List.filter (not << .completed) | |
|> List.map viewItem | |
) | |
, text <| toString model | |
] | |
viewItem : Todo -> Html Msg | |
viewItem todo = | |
Keyed.node "div" | |
[] | |
[ ( (toString todo.id) | |
, input | |
[ type' "checkbox" | |
, checked todo.completed | |
, onCheck | |
(\on -> | |
if on then | |
SetCompleted todo.id | |
else | |
NoOp | |
) | |
] | |
[] | |
) | |
, ( (toString todo.id), text <| toString todo.id ) | |
] |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Elm v0.17.1. Run this code using elm reactor instead of in Try Elm since Try Elm it doesn't import Html.Keyed (as of 10/5/16).