> > > - TMPL_ELSIF tag, eg <TMPL_ELSIF somevar>
> >
> >I've certainly had a lot of requests for this feature, but I'm still
> >reluctant to include it. I think it would only enable people to build
> >even more complex logic into their templates, which is not generally a
> >good idea.
>
> Right now, people are attempting to code around the problem like this
> (somewhat contrived example):
>
> <TMPL_IF foo>
> <p>foo is true</p>
> <TMPL_ELSE>
> <TMPL_IF bar>
> <p>bar is true</p>
> <TMPL_ELSE>
> <TMPL_IF baz>
> <p>baz is true</p>
> </TMPL_IF>
> </TMPL_IF>
> </TMPL_IF>
>
> Whatever complexity might be added by TMPL_ELSIF, it must be better then this.
agreed - using TMPL_ELSIF makes it look much clearer:
<TMPL_IF foo>
<p>foo is true</p>
<TMPL_ELSIF bar>
<p>bar is true</p>
<TMPL_ELSIF baz>
<p>baz is true</p>
</TMPL_IF>
As for performance trade off's... TMPL_ELSIF is implemented by expanding the
TMPL_ELSIF into TMPL_IF-TMPL_ELSE-/TMPL_IF internally within H::T. As such there is
no performance difference -> the resultant cached template, appears in memory as if
the user didn't use the TMPL_ELSIF syntax.
> > > - support for custom tags, eg <TMPL_CATGETS ...>
> >
> >I'll be interested to see how you coded this. I'm not sure the
> >current code base can support this cleanly... And even though I put
> >it in my HTML::Template v3 design doc I'm still not sure it's a good
> >idea. (Go figure)
This was actually relatively easy... once I understood how H::T worked... inside
out... :-)
> > > - trailing slash in tags, aka <TMPL... />
> >
> >This is trivially done in a filter, so there's no reason to add it to
> >the core code.
>
> Filters strike me as being one of those things in Perl that look easy, but
> often end up having subtle edge cases that will someday cause your computer
> to create Global Thermonuclear War, or something. Having hooks in the
> parser (as stated in the v3 design) would be a very Good Thing, IMHO.
I have been caught by the 'lets use a filter' solution. I needed the equivalent of:
<TMPL_INCLUDE <TMPL_VAR path>/info.tmpl>
ie recursive H::T. This work well, for the first template parse - until the file was
cached, since the filter is applied before the file is cached... :-o
As someone else has mentioned, a filter package may be a good thing. Since I am up
for coding it, if anyone has any filters that they would want to make available.
So far I have two filters:
1. removal of the trailing slash....
2. the filter for <TMPL_VAR NAME="name" VALUE="value">
> > > - TVPL_VAR support for HTML=TEXT which allows paragraphs of text to be
> > formatted to respect newlines
> >
> >This is easily done with HTML::Template::Expr and is too task-specific
> >to go in the core code. I've done this task a few times and each time
> >I've done it a little differently (<br> <br> vs. <p>, wrapping
> >long lines vs. no wrap, etc.).
After having another look at the code, I think I could come up with a way at
supporting ESCAPE="<something>" where 'something' is defined in a user created
sub-class. Would this be an alternate solution that you would consider?
Also, how would you do this with H::T::E? I assume you would register a function
which formats the blob of text according to your current stylesheet?
regards,
Mathew
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