[TriLUG] 7:15pm Sept 15th Perl Mongers - Custom Plugins and Filters for Template Toolkit

[Brad Oaks]

Good afternoon PerlMongers and TriLUGgers,

Thursday evening Mike South will give a talk on the subject of writing
custom plugins and filters for Template Toolkit.

The meeting will take place at McClatchy Interactive at 7:15pm. 
Directions are available on our website at http://raleigh.pm.org/

We hope to see you there!
--bradoaks

On 9/13/05, Mike South <msouth at gmail.com> wrote:
> Hi,
> 
> The good news is that Brad has really been working diligently efforts
> to get a talk this month, and he's got commitments for two!  The bad
> news is that they are in October and November.
> 
> But the really bad news is that I'm volunteering to fill in for this
> month by following up our earlier Template Toolkit adventure with a
> look at Template::Plugin and Template::Plugin::Filter.
> 
> Last time we tried to have a talk with Template Toolkit as the topic,
> we postponed the meeting due to ice.  Let's see if it's a bona-fide
> jinx--maybe the mere act of setting this up for Thursday will bring
> the hurricane our way.
> 
> I'm not officially announcing this, because I don't know exactly
> whether we have committed to different locations or whatever.  I
> assume we will be doing this at McClatchy Interactive offices, but
> wait for the followup official announcement before you set coordinates
> into your GPS units.
> 
> About Template Toolkit, and its plugin and filter stuff:
> 
> Template Toolkit is a powerful, fast, flexible templating system which
> is also extensible.  Two of the most common tools for extension are
> Template::Plugin and Template::Plugin::Filter.  One of the
> constructions in template toolkit is a filter block:
> 
> [% FILTER html_para %]
> When you see this, it will have paragraph tags
> where I only had double newlines.
> 
> Isn't that special?
> [% END %]
> 
> The output of that block will have opening and closing p tags around
> the double newline delimited paragraphs.  Suppose you wanted to add
> the capability of adding a css class to the paragraph tag (not that I
> know if a css class belongs there, but pretend it does).  You could
> create your own filter that does that, allowing you to do something
> like this:
> 
> [% FILTER classy_html_para( class=>'red_and_blinking') %]
> When you see this, it will have paragraph tags
> where I only had double newlines.
> 
> Isn't that special?
> [% END %]
> 
> Plugins are just general ways to get something into your template.
> Existing plugins will get you a DBI connection handle, or access to
> CGI.pm methods for example.  Writing your own plugins allows you to
> do, well, whatever the heck you want.
> 
> What I'm planning to do is show you how to write Plugin and Filter
> modules and give a couple of examples of what I've done with them.
> Most importantly I'll go over the annoying little gotchas that you are
> likely to run into the first time you roll your own.
> 
> Look for the real announcement with location, directions, etc. shortly.
> 
> mike
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