This is an excerpt from some production code that I turned out while I was still learning Perl. It could be shorter, but you can see what is happening. To access the inner loop variables, they have to be set as references stored in keys stored in a hash stored in the array that the outer loop is iterating over.

You can do it without the hash in the middle, but if you do that you have nowhere to store things like data about the row that can be accessed in the outer loop. If that is a little hard to follow, I can recommend you do it the same way I did: build a little test CGI where you build the data structure by hand and get it working with HTML::Template first.

The upside is that you will really, really know your perlrefs at the end of this.

for ( outer_loop sets $x, $y)
{
 $row_data{id} = $x; $row_data{text} =$y;
 my @temp=@{gimmee_fields($x,$dbh)};
        foreach (@temp){
             push @{$row_data{fields}},{id=>${$_}{id},       
             text=>${$_}{text}};
        }
 foreach (@{$row_data{fields}}){
       my $subscribed=$fields_sth->fetchrow_array;
        ${$_}{value}="checked" if $subscribed;
   }
 push(@prof_loop, \%row_data);
}
page_out('template', professions=> \@prof_loop);

<TMPL_LOOP NAME=professions> 
 <a name="<TMPL_VAR NAME="id">"><TMPL_VAR NAME="text"></a>
 <TMPL_LOOP NAME=fields>
        <INPUT 
                TYPE=CHECKBOX 
                NAME="field_<TMPL_VAR NAME="id">" 
        <TMPL_VAR NAME="value">
                >
                <TMPL_VAR NAME="text">
   </TMPL_LOOP>
   </TMPL_LOOP>

[download]

I almost feel sorry for the maintenance programmer.

____________________
Jeremy
I didn't believe in evil until I dated it.

In reply to Re: Nesting <TMPL_LOOP> in HTML::Template by jepri
in thread Nesting <TMPL_LOOP> in HTML::Template by rattusillegitimus

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.