adamc@650: con colMeta = fn t_state :: (Type * Type) =>
adamc@650:                  {Nam : string,
adamc@650:                   Show : t_state.1 -> xbody,
adamc@650:                   Inject : sql_injectable t_state.1,
adamc@650: 
adamc@650:                   NewState : transaction t_state.2,
adamc@650:                   Widget : t_state.2 -> xbody,
adamc@650:                   ReadState : t_state.2 -> transaction t_state.1}
adamc@650: con colsMeta = fn cols :: {(Type * Type)} => $(map colMeta cols)
adamc@650: 
adamc@650: val int : string -> colMeta (int, source string)
adamc@650: val float : string -> colMeta (float, source string)
adamc@650: val string : string -> colMeta (string, source string)
adamc@650: 
adamc@650: functor Make(M : sig
adamc@650:                  con cols :: {(Type * Type)}
adamc@650:                  constraint [Id] ~ cols
adamc@650:                  val fl : folder cols
adamc@650: 
adamc@650:                  val tab : sql_table ([Id = int] ++ map fst cols)
adamc@650: 
adamc@650:                  val title : string
adamc@650: 
adamc@650:                  val cols : colsMeta cols
adamc@650:              end) : sig
adamc@650:     val main : unit -> transaction page
adamc@650: end