To avoid the XY pitfall, here's some more context:
I'm building a web scraper. It scans a number of websites for a fixed set
of data which is the same for all sites. The "driver" to access the sites
is site-specific and carries some state.
The model looks like this:
type SiteDriver
= Site1Driver Site1.Model
| Site2Driver Site2.Model
type alias SiteModel =
{ name : String
, datum1 : String
, datum2 : Int
, enabled : Bool
, driver : SiteDriver
}
init : List SiteModel
init =
[ { name = "Site 1"
, datum1 = ""
, datum2 = 0
, enabled = True
, driver = Site1Driver Site1.init
}
, { name = "Site 2"
, datum1 = ""
, datum2 = 0
, enabled = True
, driver = Site2Driver Site2.init
}
]
The list of SiteModels is fixed, they are just enabled or disabled as
necessary. This approach works fine for rendering HTML without code
duplication but I can't get updates to work...
Thanks for watching.
Sincerely,
Steffen
On Saturday, 18 February 2017 04:57:45 UTC+1, Steffen wrote:
>
> Hello,
>
> I'm new to Elm and stuck with a problem. In my model I have a list of
> components of different types. Now I'm trying to get the view and update
> functions right.
>
> This has surely already been solved, but I didn't find a solution
> anywhere...
>
> Minimal example:
>
> https://ellie-app.com/qsQjTYcs2va1/3
>
> Uncomment line 166 to see what I mean. I would need to "cast"
> ComponentMessage and -Model to their Int subtypes.
>
> What did I get wrong?
>
> Sincerely,
> Steffen
>
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