Hi Robert,

your flags don't have to be of the same type as the model - try modifying 
your 'init' function to take only your partial state and return (Model, Cmd 
Msg).

пятница, 29 июля 2016 г., 14:14:39 UTC+3 пользователь Robert Walter написал:
>
> Hello,
>
> I try to initialize my elm application using programWithFlags.
>
> My app makes use of elm-mdl, so my model looks something like this:
>
> type alias AppState =
>     { mdl : Material.Model
>     , viewSelected : Int
>     , ...
>     , titleEditable : Bool
>     , refreshEditorContent : Bool
>     }
>
> In other words, it contains a Material.Model that I need to make proper 
> use of elm-mdl.
>
> When I try to use App.programWithFlags, however, having Material.Model in 
> my AppState leads to the following error:
>
>
> -- BAD FLAGS ------------------------------------------------------- 
> src/App.elm
> Your `main` is demanding an unsupported type as a flag.
> 68| main =
>     ^^^^
> The specific unsupported type is:
>     Dict.Dict
>         (List Int)
>         { animation : Material.Ripple.Animation
>         , ignoringMouseDown : Bool
>         , metrics :
>               Maybe
>                   { rect :
>                         { height : Float
>                         , left : Float
>                         , top : Float
>                         , width : Float
>                         }
>                   , x : Float
>                   , y : Float
>                   }
>         }
> The types of values that can flow through in and out of Elm include:
>     Ints, Floats, Bools, Strings, Maybes, Lists, Arrays, Tuples, 
> Json.Values,
>     and concrete records.
>
>
> Currently, I use localStorage to store my AppState partially (I do not 
> encode 'mdl'). I don't see how I can make this work, however, since I 
> assume that programWithFlags can only decode the types mentioned in the BAD 
> FLAGS message and it expects to receive a completely serialized AppState.
>
> Any suggestions from the coomunity?
>
> Thanks,
> Robert
>
>
>

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