There is very little to say more than what the error message already says. The documentation for include-template says: "Compiles the template at path-spec using the @ Syntax syntax within the enclosing lexical context."
It does not say "Requires the module specified by path-spec". In other words, include-template is source-inclusion, not module-requiring. This means that the contents of the template is not a module. Furthermore, the contents of the template is really one giant expression that looks like: (with-output-to-string (lambda () (output (list ...what-you-wrote...)))) So, even if the template were a module, you still couldn't use require, because it won't be at the top-level without some wrangling. Of course, local-require works fine because local-require can go at any scope and position. Jay On Mon, Nov 25, 2013 at 10:17 PM, Greg Hendershott <greghendersh...@gmail.com> wrote: > Why doesn't `require` work in a file provided to `include-template` > from web-server/templates? > > I dug into the source to see how far I could figure this out on my > own. I see that `include-template` is a thin wrapper around > `include/text` from scribble/text. I see in syntax-utils.rkt that > `include/text` is using `include-at/relative-to/reader` with a > Scribble syntax reader. But at that point it gets over my head. > > Motivating example: In their HTML template someone would like to > `require` a module to do some fancy formatting of a template variable. > Let's say they get a date, and want to `(require racket/date)` for > `date->string` and its various options. Or, they want to do whatever > else, and it requires (ha) some module. > ____________________ > Racket Users list: > http://lists.racket-lang.org/users -- 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 Users list: http://lists.racket-lang.org/users
