My approach is: there is one specific `Feature{X,Y,…}Msg` for each feature,
so the main `update` function has only one entry for each "submodule". Each
submodule's update looks like this:update : FeatureXMsg -> Model -> ( Model, Cmd Msg ) The key is to have it just like this everywhere. Each and every update function: - takes the specific message, so it make a full case…of, - takes the global/top level Model - returns the global/top level tuple (Model, Cmd Msg) I think it's the most simple and flexible solution. Regards, Witold Szczerba On Mon, Mar 20, 2017 at 12:58 PM, Eirik Sletteberg < eiriksletteb...@gmail.com> wrote: > In larger Elm apps, it makes sense to divide Updaters so you can > package-by-feature. > For example, a single page application could have updaters like this: > > - Configuration updater > - Session updater > - User Profile updater > - User Settings updater > - Content updater > - Some other business specific updater > > The challenge is when there are dependencies between Updaters, for example > the User Profile model might need data from the Session model, the Session > updater might need to send messages to the User updater (Load user profile > when session is updated), or the Content updater may need to check for the > Session updater (get session ID to send as parameter to the API when > fetching content), or some business-specific updater may need to interact > with both the Content updater, the User updater, and the Configuration > updater. > > In Redux, one would use combineReducers to mount each reducer under its > own path, and then one can trigger actions across reducers. How would you > solve this in Elm? > > -- > You received this message because you are subscribed to the Google Groups > "Elm Discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elm-discuss+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Elm Discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to elm-discuss+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
