You need to use a call to liteApp
. See this example for a demonstration.
Getting "no instance for YesodDispatch" error when using warp
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27-06-2023 - |
Frage
Shalom! I have written the following program using Yesod:
main = warp 2060 $
onStatic "home" (dispatchTo $ return $ h1 $ toHtml "Sheepfold")
But when I run it, I get the following error:
No instance for (YesodDispatch
(Control.Monad.Trans.Writer.Lazy.Writer LiteApp ()))
arising from a use of `warp'
Possible fix:
add an instance declaration for
(YesodDispatch (Control.Monad.Trans.Writer.Lazy.Writer LiteApp ()))
In the expression: warp 2060
In the expression:
warp 2060
$ onStatic "home" (dispatchTo $ return $ h1 $ toHtml "Sheepfold")
In an equation for `main':
main
= warp 2060
$ onStatic "home" (dispatchTo $ return $ h1 $ toHtml "Sheepfold")
Can anyone help?
Lösung
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