default
¶
The default
filter returns the passed default value if the value is
undefined or empty, otherwise the value of the variable:
1 2 3 4 5 6 7 | {{ var|default('var is not defined') }}
{{ var.foo|default('foo item on var is not defined') }}
{{ var['foo']|default('foo item on var is not defined') }}
{{ ''|default('passed var is empty') }}
|
When using the default
filter on an expression that uses variables in some
method calls, be sure to use the default
filter whenever a variable can be
undefined:
1 | {{ var.method(foo|default('foo'))|default('foo') }}
|
Arguments¶
default
: The default value