1``default`` 2=========== 3 4The ``default`` filter returns the passed default value if the value is 5undefined or empty, otherwise the value of the variable: 6 7.. code-block:: jinja 8 9 {{ var|default('var is not defined') }} 10 11 {{ var.foo|default('foo item on var is not defined') }} 12 13 {{ var['foo']|default('foo item on var is not defined') }} 14 15 {{ ''|default('passed var is empty') }} 16 17When using the ``default`` filter on an expression that uses variables in some 18method calls, be sure to use the ``default`` filter whenever a variable can be 19undefined: 20 21.. code-block:: jinja 22 23 {{ var.method(foo|default('foo'))|default('foo') }} 24 25.. note:: 26 27 Read the documentation for the :doc:`defined<../tests/defined>` and 28 :doc:`empty<../tests/empty>` tests to learn more about their semantics. 29 30Arguments 31--------- 32 33* ``default``: The default value 34