The lack of a space between ] and { is important. Notice that the example in the documentation is<div><br></div><div><div>@in[c clients]{</div><div> <tr><td>@(car c), @(cdr c)</td></tr></div><div> }</div><div><br></div><div>not</div><div><br></div><div><div>@in[c clients] {</div><div> <tr><td>@(car c), @(cdr c)</td></tr></div><div> }</div></div><div><br></div>Jay</div><div><br><div class="gmail_quote"> On Thu, Nov 24, 2011 at 3:06 PM, Daniel Bastos <span dir="ltr"><<a href="mailto:dbastos@toledo.com">dbastos@toledo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> Good evening, gentlemen.<br> <br> I'm studying<br> <br> <a href="http://docs.racket-lang.org/web-server/templates.html" target="_blank">http://docs.racket-lang.org/web-server/templates.html</a><br> <br> to see how web development is done in Racket. Having written a first<br> hello world using templates, I'm wishing to use the @in[] call. So I<br> wrote<br> <br> %cat templates1.rkt<br> #lang racket<br> (require web-server/servlet<br> web-server/servlet-env<br> web-server/templates)<br> <br> (define (start req)<br> (response/doit<br> (let ([friends<br> (list (cons "John" "Smith")<br> (cons "Jack" "Smith")<br> (cons "Joseph" "Smith"))])<br> (include-template "friends.html"))))<br> <br> (define (response/doit text)<br> (response/full<br> 200<br> #"Okey dokey"<br> (current-seconds)<br> TEXT/HTML-MIME-TYPE<br> empty<br> (list (string->bytes/utf-8 text))))<br> <br> (serve/servlet start<br> #:port 80<br> #:servlet-path "/"<br> #:command-line? #t)<br> %<br> <br> I'm getting<br> <br> %racket templates1.rkt<br> friends.html:4:18: expand: unbound identifier in module in: c<br> <br> === context ===<br> standard-module-name-resolver<br> <br> %cat friends.html<br> <br> <table><br> @in[c friends] {<br> <tr><td>@(car c), @(cdr c)</td></tr><br> }<br> </table><br> %<br> <br> Could you point towards a direction where I can always take a further<br> step to dig in and find what's going wrong? (Although I'm so new at<br> the technology that I might be unable to follow instructions.)<br> <br> Here's what I'm trying to do. I wrote templates2.rkt to test the<br> include-template function.<br> <br> %cat templates2.rkt<br> #lang racket<br> (require web-server/servlet<br> web-server/servlet-env<br> web-server/templates)<br> <br> (define (start req)<br> (response/doit<br> (include-template "nothing.html")))<br> <br> [... more code omitted ...]<br> <br> %cat nothing.html<br> hi<br> <br> %rlwrap racket<br> Welcome to Racket v5.2.0.3.<br> > (load "templates2.rkt")<br> > (expand (include-template "nothing.html"))<br> reference to undefined identifier: include-template<br> <br> I thought that by loading templates2.rkt, I could spare me from<br> requiring web-server/templates.<br> <br> > (require web-server/templates)<br> > (include-template "nothing.html")<br> "hi"<br> <br> > (expand (include-template "nothing.html"))<br> #<syntax (quote "hi")><br> <br> > (syntax->datum (expand (include-template "nothing.html")))<br> ''"hi"<br> <br> > (syntax->datum (expand (include-template "friends.html")))<br> reference to undefined identifier: friends<br> <br> === context ===<br> /home/dbastos/plt/collects/racket/port.rkt:63:0: with-output-to-string<br> /home/dbastos/plt/collects/racket/private/misc.rkt:87:7<br> <br> My plan was to see a little further what the code in friends.html is<br> doing, but then I need to bind friends to something before I try to.<br> But if I do that, the other c-unbound-identifier error will blow<br> anyway and I won't see the code. I wish I could see the code before<br> executing it. How do you guys do it?<br> _________________________________________________<br> For list-related administrative tasks:<br> <a href="http://lists.racket-lang.org/listinfo/users" target="_blank">http://lists.racket-lang.org/listinfo/users</a><br> </blockquote></div><br><br clear="all"><div><br></div>-- <br>Jay McCarthy <<a href="mailto:jay@cs.byu.edu" target="_blank">jay@cs.byu.edu</a>><br>Assistant Professor / Brigham Young University<br><a href="http://faculty.cs.byu.edu/~jay" target="_blank">http://faculty.cs.byu.edu/~jay</a><br> <br>"The glory of God is Intelligence" - D&C 93<br> </div>