Mercurial > urweb
view demo/crud.ur @ 1739:c414850f206f
Add support for -boot flag, which allows in-tree execution of Ur/Web
The boot flag rewrites most hardcoded paths to point to the build
directory, and also forces static compilation. This is convenient
for developing Ur/Web, or if you cannot 'sudo make install' Ur/Web.
The following changes were made:
* Header files were moved to include/urweb instead of include;
this lets FFI users point their C_INCLUDE_PATH at this directory
at write <urweb/urweb.h>. For internal Ur/Web executables,
we simply pass -I$PATH/include/urweb as normal.
* Differentiate between LIB and SRCLIB; SRCLIB is Ur and JavaScript
source files, while LIB is compiled products from libtool. For
in-tree compilation these live in different places.
* No longer reference Config for paths; instead use Settings; these
settings can be changed dynamically by Compiler.enableBoot ()
(TODO: add a disableBoot function.)
* config.h is now generated directly in include/urweb/config.h,
for consistency's sake (especially since it gets installed
along with the rest of the headers!)
* All of the autotools build products got updated.
* The linkStatic field in protocols now only contains the name of the
build product, and not the absolute path.
Future users have to be careful not to reference the Settings files
to early, lest they get an old version (this was the source of two
bugs during development of this patch.)
author | Edward Z. Yang <ezyang@mit.edu> |
---|---|
date | Wed, 02 May 2012 17:17:57 -0400 |
parents | c7b9a33c26c8 |
children | 6bc2a8cb3a67 |
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con colMeta = fn (db :: Type, widget :: Type) => {Nam : string, Show : db -> xbody, Widget : nm :: Name -> xml form [] [nm = widget], WidgetPopulated : nm :: Name -> db -> xml form [] [nm = widget], Parse : widget -> db, Inject : sql_injectable db} con colsMeta = fn cols => $(map colMeta cols) fun default [t] (sh : show t) (rd : read t) (inj : sql_injectable t) name : colMeta (t, string) = {Nam = name, Show = txt, Widget = fn [nm :: Name] => <xml><textbox{nm}/></xml>, WidgetPopulated = fn [nm :: Name] n => <xml><textbox{nm} value={show n}/></xml>, Parse = readError, Inject = _} val int = default val float = default val string = default fun bool name = {Nam = name, Show = txt, Widget = fn [nm :: Name] => <xml><checkbox{nm}/></xml>, WidgetPopulated = fn [nm :: Name] b => <xml><checkbox{nm} checked={b}/></xml>, Parse = fn x => x, Inject = _} functor Make(M : sig con cols :: {(Type * Type)} constraint [Id] ~ cols val fl : folder cols table tab : ([Id = int] ++ map fst cols) val title : string val cols : colsMeta cols end) = struct val tab = M.tab sequence seq fun list () = rows <- queryX (SELECT * FROM tab AS T) (fn (fs : {T : $([Id = int] ++ map fst M.cols)}) => <xml> <tr> <td>{[fs.T.Id]}</td> {@mapX2 [fst] [colMeta] [tr] (fn [nm :: Name] [t ::_] [rest ::_] [[nm] ~ rest] v col => <xml> <td>{col.Show v}</td> </xml>) M.fl (fs.T -- #Id) M.cols} <td> <a link={upd fs.T.Id}>[Update]</a> <a link={confirm fs.T.Id}>[Delete]</a> </td> </tr> </xml>); return <xml> <table border={1}> <tr> <th>ID</th> {@mapX [colMeta] [tr] (fn [nm :: Name] [t ::_] [rest ::_] [[nm] ~ rest] col => <xml> <th>{cdata col.Nam}</th> </xml>) M.fl M.cols} </tr> {rows} </table> <br/><hr/><br/> <form> {@foldR [colMeta] [fn cols => xml form [] (map snd cols)] (fn [nm :: Name] [t ::_] [rest ::_] [[nm] ~ rest] (col : colMeta t) acc => <xml> <li> {cdata col.Nam}: {col.Widget [nm]}</li> {useMore acc} </xml>) <xml/> M.fl M.cols} <submit action={create}/> </form> </xml> and create (inputs : $(map snd M.cols)) = id <- nextval seq; dml (insert tab (@foldR2 [snd] [colMeta] [fn cols => $(map (fn t => sql_exp [] [] [] t.1) cols)] (fn [nm :: Name] [t ::_] [rest ::_] [[nm] ~ rest] => fn input col acc => acc ++ {nm = @sql_inject col.Inject (col.Parse input)}) {} M.fl inputs M.cols ++ {Id = (SQL {[id]})})); ls <- list (); return <xml><body> <p>Inserted with ID {[id]}.</p> {ls} </body></xml> and upd (id : int) = let fun save (inputs : $(map snd M.cols)) = dml (update [map fst M.cols] (@foldR2 [snd] [colMeta] [fn cols => $(map (fn t => sql_exp [T = [Id = int] ++ map fst M.cols] [] [] t.1) cols)] (fn [nm :: Name] [t ::_] [rest ::_] [[nm] ~ rest] => fn input col acc => acc ++ {nm = @sql_inject col.Inject (col.Parse input)}) {} M.fl inputs M.cols) tab (WHERE T.Id = {[id]})); ls <- list (); return <xml><body> <p>Saved!</p> {ls} </body></xml> in fso <- oneOrNoRows (SELECT tab.{{map fst M.cols}} FROM tab WHERE tab.Id = {[id]}); case fso : (Basis.option {Tab : $(map fst M.cols)}) of None => return <xml><body>Not found!</body></xml> | Some fs => return <xml><body><form> {@foldR2 [fst] [colMeta] [fn cols => xml form [] (map snd cols)] (fn [nm :: Name] [t ::_] [rest ::_] [[nm] ~ rest] v (col : colMeta t) (acc : xml form [] (map snd rest)) => <xml> <li> {cdata col.Nam}: {col.WidgetPopulated [nm] v}</li> {useMore acc} </xml>) <xml/> M.fl fs.Tab M.cols} <submit action={save}/> </form></body></xml> end and confirm (id : int) = let fun delete () = dml (DELETE FROM tab WHERE Id = {[id]}); ls <- list (); return <xml><body> <p>The deed is done.</p> {ls} </body></xml> in return <xml><body> <p>Are you sure you want to delete ID #{[id]}?</p> <form><submit action={delete} value="I was born sure!"/></form> </body></xml> end and main () = ls <- list (); return <xml><head> <title>{cdata M.title}</title> </head><body> <h1>{cdata M.title}</h1> {ls} </body></xml> end