I have just pushed this change. On Tue, May 7, 2013 at 8:53 PM, Matthew Butterick <mb.list.a...@gmail.com> wrote: > Thanks for the help Jay. That worked. > > BTW I'm enjoying doing web programming with Racket. A small suggestion, if > you keep a pile of them. > > It would be great to have a #:command-char keyword option in the > include-template function, for two reasons. > > First, @-expressions are awkward in web templates. @ signs may be rare in > Racket, but they're common in web pages. True, you can escape them, but if > you're gluing together code from other sources, it's a layer of policing > that's prone to error. So it would be convenient to designate another > character. > > (In response to another question I posted on the list, Matthew Flatt made a > bugfix that allows any unicode glyph as a command-char. So there are now > zillions of options for command-chars.) > > Second, designating the command-char would allow multiple layers of > evaluation. For instance, suppose I make my web template using scribble/text > as a preprocessor, and designate ◊ as a delimiter. I designate the template > fields using a different delimiter, say ∑. (e.g., ∑title, ∑body, ∑comments). > In the preprocessor stage, these will just be interpreted as text. > > But when I use the template, I can do something like this: > > (include-template #:command-char ∑ "template.html") > > Then ∑title, ∑body, and ∑comments would be interpreted as expressions in the > current lexical context. > > > > > > On Mon, May 6, 2013 at 5:53 AM, Jay McCarthy <jay.mccar...@gmail.com> wrote: >> >> On Sun, May 5, 2013 at 1:12 AM, Matthew Butterick >> <mb.list.a...@gmail.com> wrote: >> > The docs for web-server/dispatch allude to the filesystem server that >> > lurks >> > behind the dispatch rules to handle requests that are not handled by >> > dispatch rules. >> > >> > Is there a way to explicitly send a request to the filesystem server? >> > >> > For instance, I have a dispatch route that checks if the requested file >> > exists, and if not, generates it immediately and saves it to disk. >> > However, >> > at that point, I'd prefer to take the original request and pass it to >> > the >> > filesystem server. >> >> The default dispatcher chain puts the filesystem server directly after >> the servlet handler and then the "file not found" handler is after >> that. If you ever want to have a dispatcher skip to the next one, you >> can call (next-dispatcher), even if you've done work like creating a >> file. Alternatively, you could explicitly call the file server by >> embedding it into your servlet, but I don't recommend that. >> >> Jay >> >> -- >> Jay McCarthy <j...@cs.byu.edu> >> Assistant Professor / Brigham Young University >> http://faculty.cs.byu.edu/~jay >> >> "The glory of God is Intelligence" - D&C 93 > >
-- Jay McCarthy <j...@cs.byu.edu> Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay "The glory of God is Intelligence" - D&C 93 _________________________ Racket Developers list: http://lists.racket-lang.org/dev