W3cubDocs

/Twig 1

null

null returns true if the variable is null:

{{ var is null }}

Note

none is an alias for null.

© 2009–2017 by the Twig Team
Licensed under the three clause BSD license.
The Twig logo is © 2010–2017 SensioLabs
https://twig.sensiolabs.org/doc/1.x/tests/null.html