Cheatsheet
Operators
if foo echo yes else echo no
{{ foo ? 'yes' : 'no' }}If foo echo it, else echo no:
{{ foo ? foo : 'no' }}If foo echo yes else echo nothing:
{{ foo ? 'yes' }}Returns the value of foo if it is defined and not null, no otherwise:
{{ foo ?? 'no' }}Default
Returns the value of foo if it is defined(empty values also count), no otherwise:
{{ foo|default('no') }}