[Haskell-cafe] writing wizards in Yesod

[Georgi Lyubenov]

Hi!

I believe the canonical way to handle this in Yesod is the "reader pattern"
(https://www.fpcomplete.com/blog/2017/06/readert-design-pattern):
* it's by the same author
* yesod is a ReaderT and I'm not aware of a way to replace this monad with
one of your own (e.g. some effects systems State monad, which you can then
run as a MVar, so that you have concurrent writing/reading possible between
the different threads spawned by yesod for handling each request)

======
Georgi
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/haskell-cafe/attachments/20200827/d468d234/attachment.html>