Содержание
There may be times when you want to print a default value for an empty
variable instead of printing nothing, such as printing
so that
html table backgrounds work properly. Many would use an
{if}
statement to handle this, but there is a shorthand way with Smarty, using
the default
variable modifier.
Замечание
“Undefined variable” errors will show an E_NOTICE if not disabled
in PHP's error_reporting() level or Smarty's $error_reporting property
and a variable had not been assigned to Smarty.
Пример 21.1. Printing when a variable is empty
{* the long way *}
{if $title eq ''}
{else}
{$title}
{/if}
{* the short way *}
{$title|default:' '}
See also
default modifier and
default variable handling.