I have only recently begun immersing myself in Elm and have run into this
quite early.
Here's what I want to do and it seems very reasonable:
type alias Model =
{ signup : Signup
}
type alias Signup =
{ email : { text : String, errors : String }
, password : { text : String, errors : String }
}
Update
…
ValidateSignup ->
let
( emailErrors, passwordErrors ) = getSignupErrors model
in
( { model | signup.email.errors = emailErrors,
signup.password.errors = passwordErrors }, Cmd.none)
Here's the best I've been able to come up with
type alias Model =
{ signup : Signup
}
type alias Signup =
{ email : ValidatableString
, password : ValidatableString
}
type alias ValidatableString =
{ text : String,
errors : String
}
Update
...
ValidateSignup ->
let
( emailErrors, passwordErrors ) = getSignupErrors model
emailUpdate = ValidatableString model.signup.email.text
emailErrors
passwordUpdate = ValidatableString
model.signup.password.text passwordErrors
signupUpdate = Signup emailUpdate passwordUpdate
in
( { model | signup = signupUpdate } , Cmd.none)
Please tell me I'm just missing something at this point, or advice for best
practice would be very welcome.
On Friday, 3 March 2017 19:12:39 UTC+13, Richard Feldman wrote:
>
> There have been various discussions of potential ways to improve Elm's
> record update syntax. Evan commented that "(examples > design work) at this
> point" - any potential designs for syntax improvements would need to be run
> through a gauntlet of examples to see how well they'd work, so the first
> step in the process is to gather those examples.
>
> So let's collect a ton of different real-world examples! That will help
> guide the design process.
>
> If you've run into a record update that you felt was painful and could be
> improved in some way, please post it here! (Also, *please keep this
> thread for posting of examples* *only* - it'll be easier to link back
> here during design discussions if we can reference a clean thread of
> examples, as opposed to a mismash of examples interleaved with suggestions.)
>
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