Bingo On Sat, May 21, 2016 at 7:40 PM, hulufei <[email protected]> wrote:
> I already figured it out, thanks > > Just map children's msg to parent's msg on children's html events, so the > children's view return same Msg type as parent's, that's how to use > `TabMsg` inside `Tab.view` > > On Sun, May 22, 2016 at 1:34 AM, Nick H <[email protected]> wrote: > >> Can you show us your Tab.view code? >> >> Changing the type signature in the manner I suggested will require >> changes to the function. It will be easier to explain if I can see what you >> have right now. >> >> On Wed, May 18, 2016 at 7:12 PM, Luis Fei <[email protected]> wrote: >> >>> Thanks，Nick，sorry for the later reply >>> >>> I tried to apply the changes to Tab.view, still have the problem, this >>> time the compiler complained inferring definition has this type: `(Msg -> >>> a) -> Model -> List (Html Msg) -> Html Msg`, and I'm confused how to use >>> this new added TabMsg parameter inside Tab.view >>> >>> On Wednesday, May 18, 2016 at 12:36:35 AM UTC+8, Nick H wrote: >>>> >>>> Right now, I am guessing your Tab.view has this signature: >>>> >>>> Tab.view : Tab.Model -> List (Html Tab.Msg) -> Html Tab.Msg >>>> >>>> Try changing it to follow this signature: >>>> >>>> Tab.view : (Tab.Msg -> a) -> Tab.Model -> List (Html a) -> Html a >>>> >>>> And your Main.view will then look like this: >>>> >>>> view model = >>>> Tab.view TabMsg model.tabModel >>>> [ App.map LogsMsg <| LogList.view model.logModel ] >>>> >>>> >>>> The other solution that comes to mind would be to nest the >>>> LogList.Model within Tab.Model and nest LogList.Msg within Tab.Msg, but I >>>> am guessing you want the Tab component to be more generic than that. >>>> >>>> On Tue, May 17, 2016 at 3:26 AM, Luis Fei <[email protected]> wrote: >>>> >>>>> Hi, I was trying to upgrade from 0.16 to 0.17, and meet this problem >>>>> >>>>> I have a Main.view which contains a Tab.view, and Tab.view contains a >>>>> LogList.view, so i change the Signal.forwardTo part like this: >>>>> >>>>> -- This is Main module >>>>> >>>>> type alias Model = >>>>> { tabModel : Tab.Model >>>>> , logsModel : LogList.Model >>>>> } >>>>> >>>>> type Msg >>>>> = TabMsg Tab.Msg >>>>> | LogMsg LogList.Msg >>>>> >>>>> view : Model -> Html Msg >>>>> view model = >>>>> App.map TabMsg >>>>> <| Tab.view model.tabModel >>>>> [ App.map LogsMsg <| LogList.view model.logModel ] >>>>> >>>>> >>>>> And the compiler complained as the Tab.view is expecting `List (Html >>>>> Tab.Msg)` but it is `List (Html Msg)`, I understand why the compiler >>>>> complain like this, the problem is I don't know how to do these kind of >>>>> multi-level nesting. >>>>> >>>>> thanks. >>>>> >>>>> BTW, I read >>>>> https://github.com/evancz/elm-architecture-tutorial/blob/master/nesting/2-counter-list.elm, >>>>> but it's single child to parent communication. >>>>> >>>>> -- >>>>> 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 [email protected]. >>>>> 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 [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "Elm Discuss" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/elm-discuss/yzaZXYKXDvI/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> 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 [email protected]. > 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
