Chapter 5. Variable Modifiers

Variable modifiers can be applied to variables, custom functions or strings. To apply a modifier, specify the value followed by the | (pipe) and the modifier name. A modifier may accept additional parameters that affect its behavior. These parameters follow the modifer name and are separated by : (colon).

{* Uppercase the title *}
<h2>{$title|upper}</h2>

{* Truncate the topic to 40 characters use ... at the end *}
Topic: {$topic|truncate:40:"..."}

{* format a literal string *}
{"now"|date_format:"%Y/%m/%d"}

{* apply modifier to a custom function *}
{mailto|upper address="me@domain.dom"}

If you apply a modifier to an array variable instead of a single value variable, the modifier will be applied to every value in that array. If you really want the modifier to work on an entire array as a value, you must prepend the modifier name with an @ symbol like so: {$articleTitle|@count} (this will print out the number of elements in the $articleTitle array.)

index.php:

$smarty = new Smarty;
$smarty->assign('articleTitle', 'Police begin campaign to rundown jaywalkers.');
$smarty->display('index.tpl');

index.tpl:

{$articleTitle}
{$articleTitle|capitalize}

OUTPUT:

Police begin campaign to rundown jaywalkers.
Police Begin Campaign To Rundown Jaywalkers.