[cl-who-devel] Runtime HTML generation

[Ron Garret]

No, that won't work.  with-html-output-to-string is a macro, not a function.  It does its work at macroexpansion time, not run-time.  (You might want to re-read my original message.)

rg

On Jan 23, 2010, at 11:45 AM, Joubert Nel wrote:

> Hi Ron,
> 
> You can use the with-html-output-to-string function to generate HTML at run-time. 
> Using it in a macro, you can then do data-driven HTML construction using mapcar, loop, etc.
> 
> Joubert
> 
> 
> On Jan 23, 2010, at 12:51 PM, Ron Garret wrote:
> 
>> Is there a Right Way to use CL-WHO to generate HTML at run time?  For example, suppose I want to do something like this:
>> 
>> (defun make-table (l)
>> `(:table ,@(mapcar (lambda (row) `(:tr ,@(mapcar (lambda (cell) `(:td (str ,cell)))
>>                                                  row)))
>>                    l)))
>> 
>> (cl-who:with-html-output-to-string (*standard-output* nil :prologue t)
>> ... (make-table l) ...)
>> 
>> This doesn't work because CL-WHO normally does all its work at compile time, but L is not known until run time.  I can hack this using a macro that calls EVAL, or by hacking the CL-WHO code to add another specially handled symbol, but before diving into that rabbit hole I thought I'd ask if there was already a way of doing this that I've overlooked.
>> 
>> Thanks,
>> rg
>> 
>> 
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> 
> 
> 
> 
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