here's a short post/example for solving child -> parent communication using
plain old return values from the child component to the parent component.
http://folkertdev.nl/blog/elm-child-parent-communication
On Tuesday, 14 June 2016 15:27:50 UTC+2, Adam Waselnuk wrote:
>
> This is the exact thing I am stuck on right now in my upgrade to 0.17. It
> is great to see three approaches outlined here, but would it be possible
> for anyone to share some code examples? I am struggling to follow the
> conversation a little bit but seeing some code could clear things up.
>
> On Friday, June 10, 2016 at 1:02:32 PM UTC-4, Andrew Volozhanin wrote:
>>
>> Hey everyone,
>>
>> Does anybody know what’s the preferred way to refactor passing context
>> with addresses into child components during migration from Elm 0.16 to 0.17?
>>
>> In particular, I have *Filter* component that takes context with 2
>> addresses:
>> one for internal actions (Tagged with *UpdateFilter*) and one for
>> “external” action (*Submit*) that is handled outside of the component.
>>
>> With 0.16, it looked something like this:
>>
>> type alias Context = { actions: Address Action, submit: Address () }
>>
>> update action model =
>> case action of
>> UpdateFilter value ->
>> { model | query = value }
>>
>> view : Context -> Model -> Html
>> view = context model
>> form [onSubmit context.submit ()]
>> [ input_ model.query context.actions (\value -> UpdateFilter value)
>> ]
>>
>>
>> But 0.17 doesn’t have addresses anymore, and I’m a bit lost at how should
>> I implement this.
>>
>> I’ve found example app that is in the middle of the refactoring, that
>> imports necessary “external” actions into the child components directly and
>> sends them,
>> but I don’t like that because it breaks the principle that child
>> shouldn’t know anything about its parent.
>> (See:
>> https://github.com/rogeriochaves/elm-peer-tweet/blob/master/src%2FNewTweet%2FView%2FNewTweet.elm
>> )
>>
>> What’s the best practice in such cases now?
>>
>
--
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.
