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Diffstat (limited to 'docsite/rst/playbooks_variables.rst')
| -rw-r--r-- | docsite/rst/playbooks_variables.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docsite/rst/playbooks_variables.rst b/docsite/rst/playbooks_variables.rst index e8593a33a4..bca0d0f1b1 100644 --- a/docsite/rst/playbooks_variables.rst +++ b/docsite/rst/playbooks_variables.rst @@ -166,6 +166,19 @@ This allows an explicit check with this feature off:: The variable value will be used as is, but the template evaluation will raise an error if it is undefined. + +.. _defaulting_undefined_variables: + +Defaulting Undefined Variables +------------------------------ + +Jinja2 provides a useful 'defaults' filter, that is often a better approach to failing if a variable is not defined. + + {{ some_variable | default(5) }} + +In the above example, if the variable 'some_variable' is not defined, the value used will be 5, rather than an error +being raised. + .. _set_theory_filters: Set Theory Filters |