Add chain example? about elm-form HOT 8 CLOSED

@pablohirafuji @emanuelkoczwara v2.0.0 is out with exposed actions.

from elm-form.

Hello,

Instead of passing formAction directly to Form.update:

FormAction formAction ->
    ({ model | form = Form.update formAction form}, Effects.none)

you can try something like:

FormAction formAction ->
    let
        newForm = Form.update formAction form
        formResult = Form.getOutput newForm
    in
        if formAction == Form.submit then
          case formResult of           
              Just x -> -- form validated and we have our data
              Nothing -> -- form didn't pass validation
        else   
          -- there was reset or something else...

Note that you can't pattern match on Form.Submit, you need to use if/then/else and check formAction against Form.submit.

from elm-form.

Solution worked! Thank you!

from elm-form.

Should I make a pull request to add this pattern to the example?

from elm-form.

Hi,
In fact the best place to trigger the custom action (SubmitUser) is from the view, where you can pattern match on Form.getOutput and choose if you want to Form.submit or send your custom action. Yes, that would be a good addition to the example and docs!

from elm-form.

Hello,

Could you expose Action value constructors? I think it would be logically more correct to handle this explicitly in update.

from elm-form.

Well, it's a valid point of view. In the context of #11 I'll probably reorganize action constructors for next version, I'll expose them too.

from elm-form.

Next version will expose constructors, closing.

from elm-form.