Index of all topics in a set of Mallard pages

2011/5/1 Shaun McCance <shaunm at gnome.org>:
> On Sun, 2011-05-01 at 21:30 +0200, Philip Chimento wrote:
>> Hi,
>>
>> Is there any facility in Mallard for creating an alphabetical index of
>> topics, even ones that are not linked to on the main 'index.page'
>> guide page?
>>
>> What I tried is to create a section on the main index.page:
>>
>> <section id="full-index">
>>   <title>Index</title>
>> </section>
>>
>> and then a separate guide page, full-index.page, which every topic
>> page links to using something like:
>>
>> <link type="guide" xref="full-index"/>
>>
>> This works fairly well, except for three things:
>> - You have to manually add a link on every topic page.
>> - When viewing with Yelp, where each page normally shows its hierarchy
>> at the top, (e.g. Foo Guide ->  Foo Topic) it now also shows a second
>> entry (Foo Guide ->  Index ->  Index of all help topics).
>> - There is a see-also link on the bottom of every topic page that
>> points to the index.
>
> You could try using the experimental facets extension.
>
> http://blogs.gnome.org/shaunm/2010/12/16/more-faceted-navigation/
> http://projectmallard.org/facet/1.0/
>
> Here's the gist. Create a page that collects all the links.
> Set the type attribute on the page element to "facets". In
> the info element, add this:
>
>  <facet:match key="all-pages"/>
>
> Then in each topic, add this:
>
>  <facet:match key="all-pages" value="something"/>
>
> The value doesn't really matter. You're not doing anything
> besides aggregating pages with that tag. All that matters is
> that the key attribute matches on all pages.
>
> This solves problems 2 and 3 above (which are symptoms of the
> same problem). You'll still have to manually add a facet tag
> to each page. Perhaps we could add a way for facets pages to
> aggregate all pages. (By just omitting facet:match perhaps?)
>
> And the big caveat. This is still experimental. There could
> be backwards-incompatible changes before it's releases. But
> what I outlined does actually work in Yelp 3 right now.

Hmm, I can't get it to work in Yelp 3.0.2. No links are showing up on
the index page. Have I got the correct namespace for 'facet'? I have
"http://projectmallard.org/facet/1.0/". I've tried with the
<facet:match> element inside and outside the pages' <info> elements,
if that makes any difference. Any ideas?
-- 
Philip