Rename more stuff
This commit is contained in:
Richard Feldman
266
intro/part8/src/Page/Settings.elm
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266
intro/part8/src/Page/Settings.elm
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module Page.Settings exposing (ExternalMsg(..), Model, Msg, init, update, view)
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import Data.Session exposing (Session)
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import Data.User as User exposing (User)
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import Data.UserPhoto as UserPhoto
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import Html exposing (Html, button, div, fieldset, h1, input, text, textarea)
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import Html.Attributes exposing (attribute, class, value, placeholder, type_)
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import Html.Events exposing (onInput, onSubmit)
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import Http
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import Json.Decode as Decode exposing (Decoder, decodeString, field, list, string)
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import Json.Decode.Pipeline exposing (decode, optional)
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import Request.User exposing (storeSession)
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import Route
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import Util exposing (pair)
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import Validate exposing (Validator, ifBlank, validate)
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import Views.Form as Form
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-- MODEL --
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type alias Model =
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{ errors : List Error
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, image : Maybe String
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, email : String
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, bio : String
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, username : String
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, password : Maybe String
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}
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init : User -> Model
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init user =
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{ errors = []
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, image = UserPhoto.toMaybeString user.image
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, email = user.email
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, bio = Maybe.withDefault "" user.bio
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, username = User.usernameToString user.username
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, password = Nothing
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}
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-- VIEW --
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view : Session -> Model -> Html Msg
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view session model =
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div [ class "settings-page" ]
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[ div [ class "container page" ]
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[ div [ class "row" ]
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[ div [ class "col-md-6 offset-md-3 col-xs-12" ]
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[ h1 [ class "text-xs-center" ] [ text "Your Settings" ]
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, Form.viewErrors model.errors
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, viewForm model
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]
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]
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]
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]
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viewForm : Model -> Html Msg
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viewForm model =
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Html.form [ onSubmit SubmitForm ]
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[ fieldset []
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[ Form.input
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[ placeholder "URL of profile picture"
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, value (Maybe.withDefault "" model.image)
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, onInput SetImage
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]
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[]
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, Form.input
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[ class "form-control-lg"
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, placeholder "Username"
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, value model.username
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, onInput SetUsername
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]
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[]
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, Form.textarea
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[ class "form-control-lg"
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, placeholder "Short bio about you"
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, attribute "rows" "8"
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, value model.bio
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, onInput SetBio
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]
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[]
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, Form.input
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[ class "form-control-lg"
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, placeholder "Email"
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, value model.email
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, onInput SetEmail
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]
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[]
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, Form.password
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[ class "form-control-lg"
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, placeholder "Password"
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, value (Maybe.withDefault "" model.password)
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, onInput SetPassword
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]
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[]
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, button
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[ class "btn btn-lg btn-primary pull-xs-right" ]
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[ text "Update Settings" ]
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]
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]
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-- UPDATE --
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type Msg
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= SubmitForm
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| SetEmail String
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| SetUsername String
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| SetPassword String
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| SetBio String
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| SetImage String
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| SaveCompleted (Result Http.Error User)
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type ExternalMsg
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= NoOp
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| SetUser User
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update : Session -> Msg -> Model -> ( ( Model, Cmd Msg ), ExternalMsg )
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update session msg model =
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case msg of
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SubmitForm ->
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case validate modelValidator model of
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[] ->
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( session.user
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|> Maybe.map .token
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|> Request.User.edit model
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|> Http.send SaveCompleted
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|> pair { model | errors = [] }
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, NoOp
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)
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errors ->
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( ( { model | errors = errors }
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, Cmd.none
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)
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, NoOp
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)
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SetEmail email ->
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( ( { model | email = email }
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, Cmd.none
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)
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, NoOp
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)
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SetUsername username ->
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( ( { model | username = username }
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, Cmd.none
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)
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, NoOp
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)
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SetPassword passwordStr ->
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let
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password =
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if String.isEmpty passwordStr then
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Nothing
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else
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Just passwordStr
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in
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( ( { model | password = password }
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, Cmd.none
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)
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, NoOp
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)
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SetBio bio ->
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( ( { model | bio = bio }
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, Cmd.none
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)
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, NoOp
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)
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SetImage imageStr ->
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let
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image =
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if String.isEmpty imageStr then
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Nothing
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else
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Just imageStr
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in
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( ( { model | image = image }
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, Cmd.none
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)
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, NoOp
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)
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SaveCompleted (Err error) ->
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let
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errorMessages =
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case error of
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Http.BadStatus response ->
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response.body
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|> decodeString (field "errors" errorsDecoder)
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|> Result.withDefault []
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_ ->
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[ "unable to save changes" ]
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errors =
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errorMessages
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|> List.map (\errorMessage -> ( Form, errorMessage ))
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in
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( ( { model | errors = errors }
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, Cmd.none
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)
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, NoOp
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)
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SaveCompleted (Ok user) ->
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( ( model
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, Cmd.batch [ storeSession user, Route.modifyUrl Route.Home ]
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)
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, SetUser user
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)
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-- VALIDATION --
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type Field
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= Form
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| Username
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| Email
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| Password
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| ImageUrl
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| Bio
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type alias Error =
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( Field, String )
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modelValidator : Validator Error Model
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modelValidator =
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Validate.all
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[ ifBlank .username ( Username, "username can't be blank." )
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, ifBlank .email ( Email, "email can't be blank." )
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]
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errorsDecoder : Decoder (List String)
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errorsDecoder =
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decode (\email username password -> List.concat [ email, username, password ])
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|> optionalError "email"
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|> optionalError "username"
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|> optionalError "password"
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optionalError : String -> Decoder (List String -> a) -> Decoder a
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optionalError fieldName =
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let
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errorToString errorMessage =
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String.join " " [ fieldName, errorMessage ]
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in
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optional fieldName (list (Decode.map errorToString string)) []
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