Having ported an entire spreadsheet's cells into mediawiki templates, I can
report a basic problem:
A substantial percentage of the templates required the addition of 'subst:'
to the template references in order to get the references to work. This, of
course, trashes the original {{#expr:...}}, which is highly undesirable.
On Tue, Jul 13, 2010 at 10:25 AM, Roan Kattouw <[email protected]>wrote:
> 2010/7/13 James Bowery <[email protected]>:
> > What I would like is something very similar called "CellsExtension"
> > which provides only the keyword "#cell" as in:
> > ---
> > {{#expr:{{#cell:pi}}+1}}
> > ---
> >
> > However, it gets the value of "pi" from:
> > http://somedomain.org/mediawiki/index.php?title=Pi
> >
> Just putting 3.141592653589 (as opposed to 3.14159265418, whose last
> three digits differ from their counterparts in pi) in [[Template:Pi]]
> and using {{#expr:{{pi}}+1}} should have the same effect AFAIK. If you
> want [[Template:Pi]] to look more interesting than just the number,
> you could use <noinclude> and <includeonly> .
>
> > Ideally, whenever a mediawiki rendered page is cached, dependency
> > pointers are created from all pages from which cells fetched values
> > during rendering of the page (implying the evaluation of #expr's. That
> > way, when the mediawiki source for one of the cached pages is edited,
> > not only is its cached rendering deleted, but so are all cached
> > renderings that depend on it directly or indirectly. This is so that
> > the next time those pages are accessed, they are rendered -- and
> > cached -- again, freshly evaluating the formulas in the #expr's
> > (which, of course, will contain #cell references such as {{#cell:pi}}).
> >
> With the template transclusion method I described above, all of this
> is already handled by MediaWiki.
>
> Roan Kattouw (Catrope)
>
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