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April 8, 2017 08:19
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testing elm-form part 2
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| { | |
| "version": "1.0.0", | |
| "summary": "Validate form fields with friendly error messages", | |
| "repository": "https://github.com/user/project.git", | |
| "license": "BSD3", | |
| "source-directories": [ | |
| "." | |
| ], | |
| "exposed-modules": [], | |
| "dependencies": { | |
| "elm-lang/core": "5.1.1 <= v < 5.1.1", | |
| "elm-lang/html": "2.0.0 <= v < 2.0.0", | |
| "etaque/elm-form": "2.0.0 <= v < 2.0.0" | |
| }, | |
| "elm-version": "0.18.0 <= v < 0.19.0" | |
| } |
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| <html> | |
| <head> | |
| <style> | |
| html { | |
| background: #F7F7F7; | |
| color: red; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| var app = Elm.Main.fullscreen() | |
| </script> | |
| </body> | |
| </html> |
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| module Main exposing (..) | |
| import Html exposing (..) | |
| import Html.Attributes exposing (..) | |
| import Html.Events exposing (..) | |
| import Form exposing (Form) | |
| import Form.Validate as Validate exposing (..) | |
| import Form.Input as Input | |
| type alias User = | |
| { name : String | |
| , password : String | |
| , passwordConfirmation : String | |
| } | |
| type alias Model = | |
| { form : Form String User } | |
| type Msg | |
| = NoOp | |
| | FormMsg Form.Msg | |
| init : ( Model, Cmd Msg ) | |
| init = | |
| ( { form = Form.initial [] validate }, Cmd.none ) | |
| validate : Validation String User | |
| validate = | |
| succeed User | |
| |> andMap (field "name" (string |> withCustomError "Input Name !")) | |
| |> andMap (field "password" (string |> withCustomError "Input Password !")) | |
| |> andMap | |
| (oneOf | |
| [ (field "password" string) |> andThen validateConfirmation | |
| , emptyString |> andThen validateConfirmation | |
| ] | |
| ) | |
| validateConfirmation : String -> Validation String String | |
| validateConfirmation password = | |
| field "passwordConfirmation" | |
| (string | |
| |> withCustomError "Input Password Confimation !" | |
| |> andThen | |
| (\confirmation -> | |
| if password == confirmation then | |
| succeed confirmation | |
| else | |
| fail (customError "Confirmation Error") | |
| ) | |
| ) | |
| -- Forward form msgs to Form.update | |
| update : Msg -> Model -> ( Model, Cmd Msg ) | |
| update msg ({ form } as model) = | |
| case msg of | |
| NoOp -> | |
| ( model, Cmd.none ) | |
| FormMsg formMsg -> | |
| ( { model | form = Form.update validate formMsg form }, Cmd.none ) | |
| -- Render form with Input helpers | |
| view : Model -> Html Msg | |
| view { form } = | |
| Html.map FormMsg (formView form) | |
| formView : Form String User -> Html Form.Msg | |
| formView form = | |
| let | |
| -- error presenter | |
| errorFor field = | |
| case field.liveError of | |
| Just error -> | |
| -- replace toString with your own translations | |
| div [ class "error" ] [ text (toString error) ] | |
| Nothing -> | |
| text "" | |
| -- fields states | |
| name = | |
| Form.getFieldAsString "name" form | |
| password = | |
| Form.getFieldAsString "password" form | |
| passwordConfirmation = | |
| Form.getFieldAsString "passwordConfirmation" form | |
| in | |
| div [] | |
| [ div [] | |
| [ label [] [ text "Name" ] | |
| , Input.textInput name [] | |
| , errorFor name | |
| ] | |
| , div [] | |
| [ label [] [ text "Password" ] | |
| , Input.textInput password [] | |
| , errorFor password | |
| ] | |
| , div [] | |
| [ label [] [ text "Password Confirmation" ] | |
| , Input.textInput passwordConfirmation [] | |
| , errorFor passwordConfirmation | |
| ] | |
| , button | |
| [ onClick Form.Submit ] | |
| [ text "Submit" ] | |
| ] | |
| main = | |
| Html.program | |
| { init = init | |
| , update = update | |
| , view = view | |
| , subscriptions = \_ -> Sub.none | |
| } |
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