[dokuwiki] Re: Nested substitution plugins - are they possible?
- From: Chris G <cl@xxxxxxxx>
- To: dokuwiki@xxxxxxxxxxxxx
- Date: Fri, 17 Dec 2010 17:52:23 +0000
On Fri, Dec 17, 2010 at 10:52:31AM -0600, Myron Turner wrote:
> On 12/17/2010 9:44 AM, Chris G wrote:
> >I want to nest the output of one plugin inside the values provided to
> >another:-
> >
> >The 'outer' plugin is the SQL plugin, the inner one is my own which
> >expands a link parameter, thus I want to write something like this:-
> >
> > <sql db="sqlite:////var/www/boat/data/meta/boat.db" wikitext="enable"
> > special="plain"..>
> > SELECT Summary from bePlaces where Name like '<xv>name</xv>'</sql>
> >
> >
> >The<xv>name</xv> expands to a place name and is fed into the SELECT
> >being run by the SQL plugin.
> >
> >Is this even possible and, if so, how does one do it? I obviously need
> >to get Dokuwiki to run the<xv> plugin expansion before the<sql> one.
> >
> >Any/all advice would be very welcome.
> >
>
> You appear to be using plugin:sql, which is a syntax plugin. If you
> look at the code in syntax.php, in the handle method, you will find
> the following case:
> DOKU_LEXER_UNMATCHED
> It is here that the queries are collected (and subsquently passed on
> to the render method). Before allowing the queries to be passed
> along, replace your place holders with the values from the query
> string.
>
> case DOKU_LEXER_UNMATCHED:
> $queries = explode(';', $match);
> /* add the following code */
> $name = $_GET['my_name'];
> $queries = str_replace('<xv>name</xv>', "<xv>$name</xv>",$queries);
>
> This will replace the place-holder 'name' with the same value in
> each query in the array. This should work, and if you have multiple
> place-holders to replace you can do them one at a time or all at
> once using arrays (see the php documentation).
>
Yes, I could do this, implement the substitution as a modification of
the sql plugin. However I really want to be able to do similar
substitutions elsewhere as well so it would be much nicer if I could
implement the substitution as a separate plugin.
--
Chris Green
--
DokuWiki mailing list - more info at
http://www.dokuwiki.org/mailinglist
Other related posts:
