The simplest and shortest method to check a variable

If you are working with variables in smarty you know this procedure:

if (isset($helloworld) && $helloworld != '') { {$helloworld} } else { helloworld does not exist }

But do you already know the default plugin? It works like a modifier.

The same stuff from above but much shorter:

{$helloworld|default:"helloworld does not exist"}

Or if you do not want to output an else statement:

{$helloworld|default:""}

This is also good to avoid internal Smarty warnings.

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