haskell - How to use record-syntax with Yesod-Persistent -


why doesn't following work? kinda know there's lot going under hood , user type doesn't have email, createdat, , updatedat field. what's best way not instantiate objects using positional parameters, can go out of hand?

share [mkpersist sqlsettings, mkmigrate "migrateall"] [persistlowercase| user   email string   createdat utctime maybe default=current_time   updatedat utctime maybe default=current_time   deriving show ]]  main :: io () main = runsqlite ":memory:" $   runmigration migrateall   u <- insert $ user {email="saurabhnanda@gmail.com" createdat=nothing updatedat=nothing}

compilation errors:

trysql.hs:38:23:     ‘email’ not (visible) field of constructor ‘user’  trysql.hs:38:55:     ‘createdat’ not (visible) field of constructor ‘user’  trysql.hs:38:74:     ‘updatedat’ not (visible) field of constructor ‘user’

the function names like: useremail, usercreatedat, userupdatedat.

running cabal repl , browsing project identify yesod generated functions persistent types.


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