Re: [SMARTY-DEV] enhanced foreach loops

Kerry Wilson wrote:

I would like to enhance the foreach loop by adding next and previous to the foreach variables. Example usage: {foreach from=$message.backtrace item='call' name='backtrace'} {assign var='previous_call' value=|$smarty.foreach.backtrace.next}| <li style='list-style: none;'>{$call.file} [{$call.line}] - {$previous_call.class}.{$previous_call.function}(){/if}</li> {/foreach} In case you cannot tell I am using this to print a backtrace ( I want it to show the method it is currently in, not the one that it is calling ). Where does the foreach implementation reside in source? And is this a good thing to add to the base code?

Here is the code for the feature enhancement, it goes in Smarty_Compiler.class.php around line 1185. $output .= "if ({$foreach_props}['total'] > 0):\n";

$output .= "    \$_values = array_values(\$_from);\n";
$output .= "    foreach (\$_from as $key_part\$this->_tpl_vars['$item']):\n";
$output .= "        if( isset( \$_values[{$foreach_props}['iteration']-1] ) ) { {$foreach_props}['prev'] = \$_values[{$foreach_props}['iteration']-1]; } else { {$foreach_props}['prev'] = false; }\n";
$output .= "        if( isset( \$_values[{$foreach_props}['iteration']+1] ) ) { {$foreach_props}['next'] = \$_values[{$foreach_props}['iteration']+1]; } else { {$foreach_props}['next'] = false; }\n";
$output .= "        {$foreach_props}['iteration']++;\n";

It actually turned out to be cleaner than I expected. It would be great if this were added to the next release so my code doesn't break when I upgrade! kw -- Kerry Wilson Lead Developer Williams Web kwilson@wmsco.com | 423.485.4747