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Setting HTML::Template options after new()

by Cody Fendant (Pilgrim)
on Apr 21, 2010 at 01:07 UTC ( #835924=perlquestion: print w/ replies, xml ) Need Help??
Cody Fendant has asked for the wisdom of the Perl Monks concerning the following question:

I've got some code where I create an HTML::Template object at the top, and then later on, may want to use the options loop_context_vars or global_vars depending on conditionals.

There's nothing in the POD about doing it that, way. But by dumping the HTML::Template object, I could see that these could be accessed like this:

$t->{options}->{loop_context_vars} = 1; $t->{options}->{global_vars} = 1;
interestingly, it works for loop_context_vars but not global_vars

Is there a reason for this? Can I do it a different way? Or alternatively, should I just turn them both on, even if they're not needed, and not try and do it conditionally? I was just being naturally conservative about turning on features which wouldn't be needed, that's all. Is there any kind of speed or performance implication to using these features?

Example code:

use HTML::Template; $t = HTML::Template->new( filehandle => *DATA, die_on_bad_params => 0 ); $t->{options}->{loop_context_vars} = 1; # turned on so I can use <tmpl_if name="__first__"> $t->{options}->{global_vars} = 1; # turned on so I can have a global var appear inside a loop $t->param( foo => [ { baz => 1 }, { baz => 2 }, { baz => 3 } ] ); # some loop data $t->param( bar => 'global var!' ); # a global variable print $t->output(); __DATA__ <tmpl_loop name="foo"> <tmpl_var name="bar"> <!-- this doesn't appear --> <tmpl_if name="__first__"> first! </tmpl_if> * <tmpl_var name="baz"> </tmpl_loop>

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