Changing data structure with HTML::Template

[jms53]

Hello monks,

I'm having some trouble displaying a table.

The original code, cgi:    $account->{transactions} = [ map { { line => $_ } } @transactions ]; where @transactions is filled with tab-separated values.

I want to display the elements of @transactions as a nice 2 dimensional table. Hence my new code, with the TMPL_LOOP:

   $account->{transactions} = [ map { { line => $_ } } @transactions ]; where @transactions is populated with array references:  push @transactions, \[$date, $type, $amount, $new_balance];

and the TMPL bit:

   <TABLE BORDER="1"> 
    <TMPL_LOOP NAME="transactions">
     <TR><TD>Transaction:</TD>
         <TMPL_LOOP NAME="line">
           <TD><TMPL_VAR NAME="date"></TD>
           <TD><TMPL_VAR NAME="type"></TD>
           <TD><TMPL_VAR NAME="amount"></TD>
           <TD><TMPL_VAR NAME="balance"></TD>
         </TMPL_LOOP>
     </TR>
    </TMPL_LOOP>
   </TABLE>

I don't know wether to look into altering the tmpl file or if my datastructure is just plain wrong?
The error appearing on the browser is the following:

HTML::Template->output() : fatal error in loop output : Can't call met
+hod "isa" on unblessed reference at /users/jspinel/mylib/lib/perl5/HT
+ML/Template.pm line 2563.
 at atm_choose.cgi line 15

Thank you!

[gryphon]

Greetings jms53,

I think you'll need to change your data structure. HTML::Template expects to iterate through hashrefs in an array rather than arrayrefs.

$account->{transactions} = [ map { { line => $_ } } @transactions ];

push @transactions, {
    date    => $date, 
    type    => $type, 
    amount  => $amount, 
    balance => $new_balance
};

[jms53]

Thank you gryphon,


I updated my code as you showed, and the page now loads. However, the html sent to the browser doesn't contain any data for the table.

<table border="1"> 
       <tbody><tr>
       <td></td><td>Date</td><td>Type</td><td>Amount</td><td>Balance</
+td> 
       </tr>
     <tr><td>Transaction:</td>
     </tr>
   </tbody></table>

What I'm supposed to be seeing is more something along the lines of :
 <tr><td>Transaction</td><td>2014-02-06</td><td>credit</td><td>400</td><td>1400</td></tr>

I have debugged the data to confirm it exists (my first project I was deleting my data on the first run, and then all subsequent runs yielded 0 results), and I'm not getting any complaints from the server. If you have any ideas, they are most welcome :)