Hi,
I have been using TT to conditionally show content based on 0/1
(true/false) values of variables. In my template, if I set a default
to 1 (true/on) and I want to turn it off, passing a variable value of
0 will have no effect since the DEFAULT directive will ignore the 0
per the docs.
TT MANUAL>>The DEFAULT directive is similar to SET but only updates
TT MANUAL>>variables that are currently undefined or have no "true"
TT MANUAL>>value (in the Perl sense).
This leaves no distinction between 0 and undef meaning you can never
turn off a default by number, you would always have to use literal
strings like on/off. Although the docs defer to Perl, is this the
desired result or should the DEFAULT directive allow the value of zero?
Here is a small script showing the issue:
use warnings;
use strict;
use Template;
my $template = Template->new;
$template->process(\*DATA) or die $template->error();
print "Done\n";
__DATA__
This test sets the default to 1 and tries to set variable value to 0
[% INCLUDE default_one_to_zero
default_one_to_zero_var = 0 %]
This test sets the default to 0 and tries to set variable value to 1
[% INCLUDE default_zero_to_one
default_zero_to_one_var = 1 %]
[%- BLOCK default_one_to_zero -%]
[% DEFAULT
default_one_to_zero_var = '1' -%]
[% IF default_one_to_zero_var == 0 %]OK[% ELSE %]NOT OK[% END %]: variable = [%
default_one_to_zero_var %] should be 0
[% END %]
[%- BLOCK default_zero_to_one -%]
[% DEFAULT
default_zero_to_one_var = 0 -%]
[% IF default_zero_to_one_var == 1 %]OK[% ELSE %]NOT OK[% END %]: variable = [%
default_zero_to_one_var %] should be 1
[% END %]
--
Best regards,
christopher mailto:[EMAIL PROTECTED]
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