Why does Perl's strict not let me pass a parameter hash?
- by Thariama
I hava a perl subroutine where i would like to pass parameters as a hash
(the aim is to include a css depending on the parameter 'iconsize').
I am using the call:
get_function_bar_begin('iconsize' => '32');
for the subroutine get_function_bar_begin:
use strict;
...
sub get_function_bar_begin
{
my $self = shift;
my %template_params = %{ shift || {} };
return $self->render_template('global/bars /tmpl_incl_function_bar_begin.html',%template_params);
}
Why does this yield the error message:
Error executing run mode 'start': undef error - Can't use string ("iconsize") as a HASH ref while "strict refs" in use at CheckBar.pm at line 334
Am i doing something wrong here?
Is there an other way to submit my data ('iconsize') as a hash?
(i am still new to Perl)
EDIT: Solution which worked for me. I didn't change the call, but my function:
sub get_function_bar_begin
{
my $self = shift;
my $paramref = shift;
my %params = (ref($paramref) eq 'HASH') ? %$paramref : ();
my $iconsize = $params{'iconsize'} || '';
return $self->render_template('global/bars/tmpl_incl_function_bar_begin.html',
{
'iconsize' => $iconsize,
}
);
}
