html-template-users

[htmltmpl] print several vars in one loop

[Offer K. <off...@gm...>]

Hi,
Say I've for got the following parameter passed to my template:
  names_loop => $names,

Where $names looks like:
 $names = 
 [
   {name => name1},
   {name => name2},
   {name => name3},
   # ... 50 such names
 ];

What do I write in my template to print 3 names per line, for example?
Is this even possible or do I have to re-arrange my data?
I tried:
   <tmpl_loop names_loop><tmpl_var name> <tmpl_var name> <tmpl_var name>
   </tmpl_loop>

But that just printed each name 3 times :-(

Thanks in advance,
-- 
Offer Kaye

Re: [htmltmpl] print several vars in one loop

[Roger B. W. <ro...@fi...>]

On Thu, Sep 23, 2004 at 04:56:33PM +0200, Offer Kaye wrote:

>
>What do I write in my template to print 3 names per line, for example?

What I tend to do is:

In the data, put in a "linebreak" variable:

$names = 
[
  {name => name1},
  {name => name2},
  {name => name3, linebreak => 1},
etc.

then use it in the template:

<tmpl_loop names_loop><tmpl_var name>
<tmpl_if name=linebreak><br></tmpl_if>
</tmpl_loop>

R

[htmltmpl] Re: print several vars in one loop

[Mark S. <ma...@su...>]

On 2004-09-23, Offer Kaye <off...@gm...> wrote:
> Hi,
> Say I've for got the following parameter passed to my template:
>   names_loop => $names,
>
> Where $names looks like:
>  $names = 
>  [
>    {name => name1},
>    {name => name2},
>    {name => name3},
>    # ... 50 such names
>  ];
>
> What do I write in my template to print 3 names per line, for example?
> Is this even possible or do I have to re-arrange my data?
> I tried:
>    <tmpl_loop names_loop><tmpl_var name> <tmpl_var name> <tmpl_var name>
>    </tmpl_loop>
>
> But that just printed each name 3 times :-(

So you want your data to look like this?

Name1  	Name2	Name3
Name4	Name5	Name6

One option is to  create a nested loop and send that data structure to
the code. It will look like this:

$names = [
  { 
  row => [	
	  {name => name1},
	  {name => name2},
	  {name => name3},
	  ], 
  },
  { 
  row => [	
	  {name => name3},
	  {name => name4},
	  {name => name5},
	  ], 
	},
];

###

Alternatively, you could try the HTML::Template::Expr module (which I
have never used). It should allow you to express logic like:

"After after third table cell, end the current row and start a new one".
(Hint: use the modulo operator: "%").

	Mark

Re: [htmltmpl] print several vars in one loop

[Jason P. <ja...@jo...>]

What I've done in the past, where I need to have more than two in a row 
is to create a nested loop, where the outer loop is the rows and the 
inner loop is the 3 (or N != 2) records you want to display.

Code Example (in the cgiapp):

# Need to divide into sixths for Rosie's design...
my $count = 0;
my $six_issues = [];
my $rows = [];
while( my $hr = $sth->fetchrow_hashref() ) {
   $hr->{'bi_rate'} = sprintf( "%.2f", $hr->{'bi_rate'} );
   $count++;
   my $img = 'graphics/TOC/' .
     sprintf( "%02d", $hr->{'volume_num'} ) .
     sprintf( "%02d", $hr->{'issue_num'} ) .
     '/cover-small.jpg';
   push @$six_issues, {
     'image_file'	=>	$img,
     'id'		=>	$hr->{'id'},
     'label'		=>	$hr->{'label'},
     'volume_num'	=>	$hr->{'volume_num'},
     'issue_num'		=>	$hr->{'issue_num'},
     'bi_rate'		=>	$hr->{'bi_rate'},
   };
   if ( $count % 6 == 0 ) {
     push @$rows, { 'six_issues' => $six_issues };
     $six_issues = [];
   }
}
push @$rows, { 'six_issues' => $six_issues } if ( $six_issues );
$template->param( 'rows' => $rows );
----------------------
htmltmpl Code Example:
----------------------
<!-- TMPL_LOOP NAME="rows" -->
<tr>
   <!-- TMPL_LOOP NAME="six_issues" -->
   <td valign="top" nowrap class="sansserif"><label for="ind_<!-- 
TMPL_VAR NAME="id" -->"><img src="<!-- TMPL_VAR NAME="image_file" -->" 
border="1" width="92" height="120"></label></td>
   <!-- /TMPL_LOOP -->
</tr>
<tr>
   <!-- TMPL_LOOP NAME="six_issues" -->
   <td valign="top" nowrap class="sansserif"><label for="ind_<!-- 
TMPL_VAR NAME="id" -->"><!-- TMPL_VAR NAME="label" --> <br>
   (Vol. <!-- TMPL_VAR NAME="volume_num" -->, Issue <!-- TMPL_VAR 
NAME="issue_num" -->)<br>
   <input type="checkbox" name="ind_issue" id="ind_<!-- TMPL_VAR 
NAME="id" -->" value="<!-- TMPL_VAR NAME="id" -->">
   $ <!-- TMPL_VAR NAME="bi_rate" --> (USD)</label>
   </td>
   <!-- /TMPL_LOOP -->
</tr>
<!-- /TMPL_LOOP -->

You can see this in action at our FB&C Subscription Website (it's the 
2nd process {we don't collect your information from the first step -- it 
all becomes hidden variables at the bottom of that 2nd page}):

http://www.finebooksmagazine.com/subscribe

This is one of the limitations of HTML::Template, but it's also a bleed 
or merge of logic/control into the presentation layer.  I (& you) might 
get tempted to move to something like TT, where you can put some logic 
in the template itself, but that's where you blur the lines of MVC.

I would be interested to read other responses to this, too.

Cheers,

Jason

PS: If you only wanted two, you could workaround it with the __EVEN__ 
and __ODD__ loop context variables.