Book Errata

snoyberg edited this page Apr 23, 2012 · 1 revision
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There have been some minor changes to Yesod since the publication of the book. This page will hopefully contain a full list:

  • To ease installation, we now have a yesod-platform package. Instead of running cabal install yesod, you can run cabal install yesod-platform.

  • Hamlet now requires that all tags have a closing right bracket. In other words:

  • The function yepnopeJs has been generalized to jsLoader. Similarly, encryptKey and clientSessionDuration have been replaced with makeSessionBackend.

  • Persistent no longer automatically derives Show, Read, and Eq instances. You must manually add them in. For example:

        name Text
        age Int
        deriving Show -- this is now required