This page covers Elm 0.18


The main level needs to be hooked up with the Players modules we created.

We need to create links from:

Main Messages  --->    Players Messages
Main Models    --->    Players Models
Main Update    --->    Players Update

Main Messages

Modify src/Messages.elm to include players messages:

module Messages exposing (..)

import Players.Messages

type Msg
    = PlayersMsg Players.Messages.Msg

Main Models

Modify src/Models.elm to include players:

module Models exposing (..)

import Players.Models exposing (Player)

type alias Model =
    { players : List Player

initialModel : Model
initialModel =
    { players = [ Player "1" "Sam" 1 ]

Here we have a hardcoded player for now.

Main Update

Change src/Update.elm to:

module Update exposing (..)

import Messages exposing (Msg(..))
import Models exposing (Model)
import Players.Update

update : Msg -> Model -> ( Model, Cmd Msg )
update msg model =
    case msg of
        PlayersMsg subMsg ->
                ( updatedPlayers, cmd ) =
                    Players.Update.update subMsg model.players
                ( { model | players = updatedPlayers }, PlayersMsg cmd )

Here we follow the Elm architecture:

  • All PlayersMsg are routed to Players.Update.
  • We extract the result for Players.Update using pattern matching
  • Return the model with the updated player list and any command that needs to run.

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