[Haskell-beginners] Yesod error

[Lee Short]

Thanks, Michael, persistLowerCase did the trick!  (well, it showed 
another problem that looks to be related to diffs 1.0 -> 1.2, but I 
could figure that one out).

> 
> I haven't finished updating the book for Yesod 1.2 yet; the function
> persist has been removed in 1.2, and replaced with the two 
> alternatives
> persistUpperCase and persistLowerCase. I recommend using the latter. 
> I'm
> hoping to finish updating the Persistent chapter soon (it's about 
> halfway
> done).
> 
>