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community.general.flattened – return single list completely flattened

Note

This plugin is part of the community.general collection (version 3.8.1).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.general.

To use it in a playbook, specify: community.general.flattened.

Synopsis

  • given one or more lists, this lookup will flatten any list elements found recursively until only 1 list is left.

Parameters

Parameter Choices/Defaults Configuration Comments
_terms
string / required
lists to flatten

Notes

Note

  • unlike ‘items’ which only flattens 1 level, this plugin will continue to flatten until it cannot find lists anymore.
  • aka highlander plugin, there can only be one (list).

Examples

- name: "'unnest' all elements into single list"
  ansible.builtin.debug:
    msg: "all in one list {{lookup('community.general.flattened', [1,2,3,[5,6]], [a,b,c], [[5,6,1,3], [34,a,b,c]])}}"

Return Values

Common return values are documented here, the following are the fields unique to this lookup:

Key Returned Description
_raw
list / elements=string
success
flattened list


Authors

© 2012–2018 Michael DeHaan
© 2018–2021 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/latest/collections/community/general/flattened_lookup.html