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Re: Re: HTML::Template question - tmpl_if

by kiat (Vicar)
on Dec 14, 2003 at 01:55 UTC ( #314596=note: print w/replies, xml ) Need Help??


in reply to Re: HTML::Template question - tmpl_if
in thread HTML::Template question - tmpl_if

Hi djantzen,

Thanks for helping!

In my attempt to simplify, I left a subroutine out. I've included it in the latest update. The subroutine takes a hash and prepare it for output to HTML::Template.

I would appreciate very much your taking a look at it again.

Thanks in advance :)

  • Comment on Re: Re: HTML::Template question - tmpl_if

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Re: Re: Re: HTML::Template question - tmpl_if
by djantzen (Priest) on Dec 14, 2003 at 02:12 UTC

    Well this is somewhat poor style, but you could say something like:

    options => defined($hashref->{'options'}) || []

    How about a nice map though that only pulls out the defined elements in your hash?

    map { defined $hash->{$_} ? ($_ => $hash->{$_}) : () } keys %$hash;

    The output then can be fed directly into param. This is limited too in that it assumes your hashkeys are identical to your fields (TMPL_VARS), but if you can live with that assumption it might work for you.

    HTH


    "The dead do not recognize context" -- Kai, Lexx
      Thanks, the first solution works for me.

      I didn't get the second solution to work. How do you get it work work given the code I gave about (the %hash and the generate subroutine).

      Finally, how would you have set up a template like this?

        Basically your generate subroutine would look like:

        sub generate { my $hashref = shift; my $template = HTML::Template->new(filename => "$tmpldir/generic.tt" +); $template->param(map { defined $hashref->{$_} ? ($_ => $hashref->{$_ +}) : () } keys %$hashref); ); print $template->output; }

        This works because HTML::Template::param expects a list an even number of elements in length suitable for hash type operations, and map of course produces lists, so our expression there utilizes the ternary operator (?:) to test for defined values and outputs key/value pairs.

        I am not really qualified to give advice about template design since I'm new to it myself. But just the fact you're using them I can comfortably say is a good sign :)


        "The dead do not recognize context" -- Kai, Lexx

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