adamc@339: con colMeta = fn t_formT :: (Type * Type) => {
adamc@339: Nam : string,
adamc@339: Show : t_formT.1 -> xbody,
adamc@339: Widget : nm :: Name -> xml form [] [nm = t_formT.2],
adamc@341: WidgetPopulated : nm :: Name -> t_formT.1 -> xml form [] [nm = t_formT.2],
adamc@339: Parse : t_formT.2 -> t_formT.1,
adamc@339: Inject : sql_injectable t_formT.1
adamc@339: }
adamc@339: con colsMeta = fn cols :: {(Type * Type)} => $(Top.mapT2T colMeta cols)
adamc@326:
adamc@325: functor Make(M : sig
adamc@339: con cols :: {(Type * Type)}
adamc@325: constraint [Id] ~ cols
adamc@339: val tab : sql_table ([Id = int] ++ mapT2T fstTT cols)
adamc@325:
adamc@325: val title : string
adamc@325:
adamc@339: val cols : colsMeta cols
adamc@325: end) = struct
adamc@325:
adamc@325: open constraints M
adamc@325: val tab = M.tab
adamc@325:
adamc@339: sequence seq
adamc@339:
adamc@339: fun create (inputs : $(mapT2T sndTT M.cols)) =
adamc@339: id <- nextval seq;
adamc@339: () <- dml (insert tab (foldT2R2 [sndTT] [colMeta]
adamc@339: [fn cols => $(mapT2T (fn t :: (Type * Type) =>
adamc@342: sql_exp [] [] [] t.1) cols)]
adamc@339: (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@339: [[nm] ~ rest] =>
adamc@339: fn input col acc => acc with nm = sql_inject col.Inject (col.Parse input))
adamc@339: {} [M.cols] inputs M.cols
adamc@339: with #Id = (SQL {id})));
adamc@339: return
adamc@339: Inserted with ID {txt _ id}.
adamc@339:
adamc@339:
adamc@342: fun save (id : int) (inputs : $(mapT2T sndTT M.cols)) =
adamc@342: () <- dml (update [mapT2T fstTT M.cols] (foldT2R2 [sndTT] [colMeta]
adamc@342: [fn cols => $(mapT2T (fn t :: (Type * Type) =>
adamc@342: sql_exp [T = [Id = int] ++ mapT2T fstTT M.cols] [] [] t.1) cols)]
adamc@342: (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@342: [[nm] ~ rest] =>
adamc@342: fn input col acc => acc with nm = sql_inject col.Inject (col.Parse input))
adamc@342: {} [M.cols] inputs M.cols)
adamc@342: tab (WHERE T.Id = {id}));
adamc@341: return
adamc@342: Saved!
adamc@341:
adamc@341:
adamc@341: fun update (id : int) =
adamc@341: fso <- oneOrNoRows (SELECT tab.{{mapT2T fstTT M.cols}} FROM tab WHERE tab.Id = {id});
adamc@341: case fso : (Basis.option {Tab : $(mapT2T fstTT M.cols)}) of
adamc@341: None => return Not found!
adamc@341: | Some fs => return
adamc@341: {foldT2R2 [fstTT] [colMeta] [fn cols :: {(Type * Type)} => xml form [] (mapT2T sndTT cols)]
adamc@341: (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@341: [[nm] ~ rest] =>
adamc@341: fn (v : t.1) (col : colMeta t) (acc : xml form [] (mapT2T sndTT rest)) =>
adamc@341: {cdata col.Nam}: {col.WidgetPopulated [nm] v}
adamc@341: {useMore acc}
adamc@341: )
adamc@341:
adamc@341: [M.cols] fs.Tab M.cols}
adamc@341:
adamc@341:
adamc@341:
adamc@341:
adamc@337: fun delete (id : int) =
adamc@337: () <- dml (DELETE FROM tab WHERE Id = {id});
adamc@337: return
adamc@337: The deed is done.
adamc@337:
adamc@337:
adamc@337: fun confirm (id : int) = return
adamc@337: Are you sure you want to delete ID #{txt _ id}?
adamc@337:
adamc@337: I was born sure!
adamc@337:
adamc@337:
adamc@334: fun main () : transaction page =
adamc@334: rows <- queryX (SELECT * FROM tab AS T)
adamc@339: (fn (fs : {T : $([Id = int] ++ mapT2T fstTT M.cols)}) =>
adamc@326:
adamc@326: | {txt _ fs.T.Id} |
adamc@339: {foldT2RX2 [fstTT] [colMeta] [tr]
adamc@339: (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@326: [[nm] ~ rest] =>
adamc@336: fn v col =>
adamc@336: | {col.Show v} |
adamc@326:
)
adamc@326: [M.cols] (fs.T -- #Id) M.cols}
adamc@341: [Update] [Delete] |
adamc@326:
adamc@334: );
adamc@325: return
adamc@334: {cdata M.title}
adamc@325:
adamc@325:
adamc@325:
adamc@334: {cdata M.title}
adamc@325:
adamc@325:
adamc@336:
adamc@336: | ID |
adamc@339: {foldT2RX [colMeta] [tr]
adamc@339: (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@336: [[nm] ~ rest] =>
adamc@336: fn col =>
adamc@336: | {cdata col.Nam} |
adamc@336:
)
adamc@336: [M.cols] M.cols}
adamc@336:
adamc@325: {rows}
adamc@325:
adamc@339:
adamc@339:
adamc@339:
adamc@339:
adamc@339: {foldT2R [colMeta] [fn cols :: {(Type * Type)} => xml form [] (mapT2T sndTT cols)]
adamc@339: (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@339: [[nm] ~ rest] =>
adamc@339: fn (col : colMeta t) (acc : xml form [] (mapT2T sndTT rest)) =>
adamc@339: {cdata col.Nam}: {col.Widget [nm]}
adamc@339: {useMore acc}
adamc@339: )
adamc@339:
adamc@339: [M.cols] M.cols}
adamc@339:
adamc@339:
adamc@339:
adamc@325:
adamc@325:
adamc@325: end