I've attached a modification of the echo demo to demonstrate this
idea. It would be nice if this was just as doable if not easier with
a new version of qpy. The performance of course is terrible when
validating so you would never do this in production. Also, there is
probably some re-factoring that could/should be done.

You'll need lxml if you intend to run this.

On Oct 14, 2007, at 3:23 AM, mario ruggier wrote:

> Considerations:
> Validation against a schema may only be done on a full document?

The example has one decorator for fragments that just parses the text
and another for pages that validates as an XHTML document.

> Only well-formedness could be checked on each template?

If the method/function generates a page, then a full XHTML document
check can be made by selecting the correct decorator.

> Such checks should be toggle-able, i.e. turned off in deployment.
> Can that easily be done using decorators?

The example decorators check a configuration variable on the Site.

>
>> My motivation for this is that it can be difficult to get an online
>> validator to validate offline and secure websites. This could also be
>> useful when using qp to implement REST web services.
>
> Ah, but it may be easier in that case to just not use XML... ;-)

Well, if you are trying to produce XHTML 1.0 Strict (qp's default
document type), I think you're stuck with XML. :-)

Dave





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