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).
Example 5-1. modifier example {* apply modifier to a variable *}
{$title|upper}
{* modifier with parameters *}
{$title|truncate:40:"..."}
{* apply modifier to a function parameter *}
{html_table loop=$myvar|upper}
{* with parameters *}
{html_table loop=$myvar|truncate:40:"..."}
{* apply modifier to literal string *}
{"foobar"|upper}
{* using date_format to format the current date *}
{$smarty.now|date_format:"%Y/%m/%d"}
{* apply modifier to a custom function *}
{mailto|upper address="me@domain.dom"} |
|
If you apply a modifier to an array variable instead of a single value variable,
the modifier will be applied to every value in that array. If you really want
the modifier to work on an entire array as a value, you must prepend the
modifier name with an @ symbol like so:
{$articleTitle|@count} (this will print out the number of
elements in the $articleTitle array.)
Modifiers can be autoloaded from your $plugins_dir (also see:
Naming
Conventions) or can be registered explicitely (see: register_modifier).
Additionally
all php-functions can be used as modifiers implicitly. (The
@count example above actually uses php's
count() function and not a smarty-modifier). Using php-functions
as modifiers has two little pitfalls: First: Sometimes the order
of the function-parameters is not the desirable one
({"%2.f"|sprintf:$float} actually works, but
asks for the more intuitive. For example:{$float|string_format:"%2.f"}
that is provided by the Smarty distribution). Second: with $security turned on all
php-functions that are to be used as modifiers have to be
declared trusted in the
$security_settings['MODIFIER_FUNCS']-array.
See also
register_modifier(),
register_function(),
Extending Smarty with plugins
and
modifiers,
capitalize
This is used to capitalize the first letter of all words in a variable.
Example 5-2. capitalize
<?php
$smarty->assign('articleTitle', 'next x-men film, x3, delayed.');
?>
|
Where template is:
{$articleTitle}
{$articleTitle|capitalize}
{$articleTitle|capitalize:true} |
This will output:
next x-men film, x3, delayed.
Next X-Men Film, x3, Delayed.
Next X-Men Film, X3, Delayed. |
|
See also lower
and
upper
