I tried yesod in five minutes and I'm having a problem trying to add a date and time string that would update on refresh.

I just want to add it to the simple page you get with yesod in 5 minutes. I can embed a date and time string that is the value of a Haskell variable but that won't refresh on update to the current date and time. My simplistic approach was to put a line in Handler/root.hs:

currTimeAndDate = getClockTime

Handler/Root.hs:22:21:

No instance for (blaze-html-0.4.1.1:Text.Blaze.ToHtml

arising from a use of `toHtml'

add an instance declaration for

(blaze-html-0.4.1.1:Text.Blaze.ToHtml (IO ClockTime))

In the second argument of `(.)', namely `toHtml'

hamlet-0.8.2:Text.Hamlet.Quasi.htmlToHamletMonad . toHtml

In a stmt of a 'do' expression:

(hamlet-0.8.2:Text.Hamlet.Quasi.htmlToHamletMonad . toHtml)

I'm sure it would compile if I wrapped getClockTime with unsafePerformIO to get a String but then refresh of the page wouldn't give me the current time. In addition it doesn't seem like the right way to do this.

I'm sure my problem is due to my lack of knowledge of Haskell IO and monads which I do plan to learn thoroughly but right now I'd just like to get this to work. It seems like I could do it with a form in Yesod but that seems like overkill and wouldn't have the look I want.

I'm very impressed with the software, the book and the source code for the www.haskellers.com. It is a testimony to the quality of all three that I have got this far, particularly considering how little I know. Any help would be greatly appreciated.

Sincerely

George