On Apache
Under GNU General Public License
2024-12-12 17:06 @18.226.248.194 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
HTML::Template::FAQ(3pm) User Contributed Perl Documentation HTML::Template::FAQ(3pm)
NAME
HTML::Template::FAQ - Frequently Asked Questions about HTML::Template
SYNOPSIS
In the interest of greater understanding I've started a FAQ section of the perldocs.
Please look in here before you send me email.
FREQUENTLY ASKED QUESTIONS
Is there a place to go to discuss HTML::Template and/or get help?
There's a mailing-list for discussing HTML::Template at
html-template-users AT lists.net. Join at:
http://lists.sourceforge.net/lists/listinfo/html-template-users
If you just want to get email when new releases are available you can join the
announcements mailing-list here:
http://lists.sourceforge.net/lists/listinfo/html-template-announce
Is there a searchable archive for the mailing-list?
Yes, you can find an archive of the SourceForge list here:
http://dir.gmane.org/gmane.comp.lang.perl.modules.html-template
I want support for <TMPL_XXX>! How about it?
Maybe. I definitely encourage people to discuss their ideas for HTML::Template on the
mailing list. Please be ready to explain to me how the new tag fits in with
HTML::Template's mission to provide a fast, lightweight system for using HTML templates.
NOTE: Offering to program said addition and provide it in the form of a patch to the most
recent version of HTML::Template will definitely have a softening effect on potential
opponents!
I found a bug, can you fix it?
That depends. Did you send me the VERSION of HTML::Template, a test script and a test
template? If so, then almost certainly.
If you're feeling really adventurous, HTML::Template is publicly available on GitHub
(https://github.com/mpeters/html-template). Please feel free to fork it and send me a pull
request with any changes you have.
<TMPL_VAR>s from the main template aren't working inside a <TMPL_LOOP>! Why?
This is the intended behavior. "<TMPL_LOOP>" introduces a separate scope for "<TMPL_VAR>s"
much like a subroutine call in Perl introduces a separate scope for "my" variables.
If you want your "<TMPL_VAR>"s to be global you can set the "global_vars" option when you
call "new()". See above for documentation of the "global_vars" "new()" option.
How can I pre-load my templates using cache-mode and mod_perl?
Add something like this to your startup.pl:
use HTML::Template;
use File::Find;
print STDERR "Pre-loading HTML Templates...\n";
find(
sub {
return unless /\.tmpl$/;
HTML::Template->new(
filename => "$File::Find::dir/$_",
cache => 1,
);
},
'/path/to/templates',
'/another/path/to/templates/'
);
Note that you'll need to modify the "return unless" line to specify the extension you use
for your template files - I use .tmpl, as you can see. You'll also need to specify the
path to your template files.
One potential problem: the /path/to/templates/ must be EXACTLY the same path you use when
you call "HTML::Template->new()". Otherwise the cache won't know they're the same file and
will load a new copy - instead getting a speed increase, you'll double your memory usage.
To find out if this is happening set "cache_debug =" 1> in your application code and look
for "CACHE MISS" messages in the logs.
What characters are allowed in TMPL_* names?
Numbers, letters, '.', '/', '+', '-' and '_'.
How can I execute a program from inside my template?
Short answer: you can't. Longer answer: you shouldn't since this violates the fundamental
concept behind HTML::Template - that design and code should be separate.
But, inevitably some people still want to do it. If that describes you then you should
take a look at HTML::Template::Expr. Using HTML::Template::Expr it should be easy to write
a "run_program()" function. Then you can do awful stuff like:
<tmpl_var expr="run_program('foo.pl')">
Just, please, don't tell me about it. I'm feeling guilty enough just for writing
HTML::Template::Expr in the first place.
What's the best way to create a <select> form element using HTML::Template?
There is much disagreement on this issue. My personal preference is to use CGI.pm's
excellent "popup_menu()" and "scrolling_list()" functions to fill in a single "<tmpl_var
select_foo>" variable.
To some people this smacks of mixing HTML and code in a way that they hoped HTML::Template
would help them avoid. To them I'd say that HTML is a violation of the principle of
separating design from programming. There's no clear separation between the programmatic
elements of the "<form>" tags and the layout of the "<form>" tags. You'll have to draw
the line somewhere - clearly the designer can't be entirely in charge of form creation.
It's a balancing act and you have to weigh the pros and cons on each side. It is certainly
possible to produce a "<select>" element entirely inside the template. What you end up
with is a rat's nest of loops and conditionals. Alternately you can give up a certain
amount of flexibility in return for vastly simplifying your templates. I generally choose
the latter.
Another option is to investigate HTML::FillInForm which some have reported success using
to solve this problem.
perl v5.32.0 2020-12-23 HTML::Template::FAQ(3pm)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-12-12 17:06 @18.226.248.194 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)