我的目标是能够在服务器上为 Google Visualizations 生成数据,然后将其作为 java 脚本传递给客户端,以便将其呈现为折线图。我下面的示例编译正确,但在浏览器中呈现时会产生错误。在服务器上构建 DataCommon 对象后,我需要做什么才能正确呈现为 java 脚本?
namespace Website
open System
type Action =
| Test
module Page =
open System.Web
open IntelliFactory.WebSharper.Sitelets
open IntelliFactory.WebSharper.Html
let Page title body : Content<Action> =
PageContent (fun context ->
{ Page.Default with
Title = Some(title)
Body = body context
})
module Chart =
open System
open IntelliFactory.WebSharper
open IntelliFactory.WebSharper.Html
open IntelliFactory.WebSharper.Google
open IntelliFactory.WebSharper.Google.Visualization
open IntelliFactory.WebSharper.Google.Visualization.Base
open IntelliFactory.WebSharper.EcmaScript
open IntelliFactory.WebSharper.Web
let RandomData () =
let random = new Random()
let valueCount = 100
let maxValue = 300
let seriesCount = random.Next(5)
let data = new Base.DataTable()
data.addRows(valueCount)
|> ignore
let addSeries index =
let name = sprintf "Series %d" index
data.addColumn(ColumnType.NumberType, name)
|> ignore
Seq.init valueCount (fun index -> random.Next(maxValue))
|> Seq.iteri (fun valueIndex value -> data.setValue(index, valueIndex, value) |> ignore)
[0 .. seriesCount]
|> List.iter addSeries
data
type LineChart( data : DataCommon, title ) =
inherit Web.Control()
[<JavaScript>]
override this.Body =
let div =
Div []
|>! OnAfterRender (fun container ->
let visualization = new Visualizations.LineChart(container.Dom)
let options = {
Visualizations.LineChartOptions.Default with
width = 400.0
height = 240.0
legend = Visualizations.LegendPosition.Bottom
title = title
}
visualization.draw(data, options))
div :> _
module Site =
open Chart
open Page
open IntelliFactory.Html
open IntelliFactory.WebSharper.Sitelets
let TestPage =
Page "Test" (fun (context : Context<Action>) ->
[
Div [Text "Test"]
Div [new Chart.LineChart(RandomData(), "Test Chart")]
])
let Main =
Sitelet.Sum [
Sitelet.Content "/" Test TestPage
]
open IntelliFactory.WebSharper.Sitelets
type Website() =
interface IWebsite<Action> with
member this.Sitelet = Site.Main
member this.Actions = [Test]
[<assembly: WebsiteAttribute(typeof<Website>)>]
do ()