[racket] Ensuring data fed to web-server/templates is textual

From: Jordan Johnson (jmj at fellowhuman.com)
Date: Thu Feb 9 13:45:47 EST 2012

On Feb 8, 2012, at 10:17 AM, Jay McCarthy <jay.mccarthy at gmail.com> wrote:
web-server/templates uses scribble/text
> So, if you return a function, then it will be called.

I'm not sure I understand the implication: that I could achieve what I'm after by wrapping the images in a function?  I'm not clear on how that would work.

> We could also change scribble/text to support a struct/class property
> for JIT transformation. Does that sound good?

This sounds like it might be the kind of thing I'm after.  Given that I don't necessarily know how the images are being created, could attaching such a property be done without changing how the image%s are instantiated?


> Is that okay with you, Eli?
> Jay
> On Tue, Feb 7, 2012 at 4:50 PM, Jordan Johnson <jmj at fellowhuman.com> wrote:
>> Hi all,
>> I'm using web-server/templates to generate text, and the data in variables I reference in the template include s-exps that may, in some cases, contain image% objects.  I want it to render the image%s as plain text; even just the string "<IMAGE>" or similar would be adequate.
>> So, my question is: how (via the template system or other libraries) can I best make racket perform this translation, ideally without writing code to walk the s-exp trees?  It seems there must be a way someplace to tweak the output function used by the template library, but I don't know where that would be.
>> Best,
>> Jordan
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> -- 
> Jay McCarthy <jay at cs.byu.edu>
> Assistant Professor / Brigham Young University
> http://faculty.cs.byu.edu/~jay
> "The glory of God is Intelligence" - D&C 93

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