WebSharper Interface Generator - Records

Question

How do I go about defining a record that would be serialized to a JSON object... I've been trying to build the oConfig parameter for YUI2 constructor, something like:

type TreeParameter =
    {
        Type : string
        Label : string
        Expanded : bool
        Children : TreeParameter array
    }

Thanks!

David

Answer 1

I guess we could implement this but it has not yet made it into the interface generator. For now you can do:

let TreeParameter =
    let self = Type.New()
    Pattern.Config "TreeParameter" {
        Required =
            [
                "Type", T<string>
                "Label", T<string>
                "Expanded", T<bool>
                "Children", Type.ArrayOf self
            ]
        Optional = []
    }
    |=> self

From F# point of view the generated type will look like this:

type TreeParameter(t: string, l: string, e: bool, c: TreeParameter[]) =
    member this.Type = t
    member this.Label = l
    member this.Expanded = e
    member this.Children = c

From JavaScript perspective, the values would look like this:

{Type:t,Label:l,Expanded:e,Children:c}

In essence it is like a record without the benefit of record syntax and functional extension.