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Ansible's extract filter is supposedly made for use in map, but at the time of writing the documentation doesn't actually show how to use it together with the map filter. The following outputs VAR...
Question
ansible
#2: Post edited
by
Iizuki
·
2023-10-11T12:57:39Z (about 1 year ago)
yaml
- Ansible's [extract](https://docs.ansible.com/ansible/latest/collections/ansible/builtin/extract_filter.html) filter is supposedly made for use in [map](https://jinja.palletsprojects.com/en/3.0.x/templates/#jinja-filters.map), but at the time of writing the documentation doesn't actually show how to use it together with the map filter.
- The following outputs _VARIABLE IS NOT DEFINED!_, so clearly it's missing something. I would like it to output _[1, 2]_.
```ansible- - name: Extraction test
- vars:
- dictionary:
- one: 1
- two: 2
- key_list:
- - one
- - two
- extracted: "{{ key_list | map('extract', 'dictionary') }}"
- ansible.builtin.debug:
- var: extracted
- ```
- Ansible's [extract](https://docs.ansible.com/ansible/latest/collections/ansible/builtin/extract_filter.html) filter is supposedly made for use in [map](https://jinja.palletsprojects.com/en/3.0.x/templates/#jinja-filters.map), but at the time of writing the documentation doesn't actually show how to use it together with the map filter.
- The following outputs _VARIABLE IS NOT DEFINED!_, so clearly it's missing something. I would like it to output _[1, 2]_.
- ```yaml
- - name: Extraction test
- vars:
- dictionary:
- one: 1
- two: 2
- key_list:
- - one
- - two
- extracted: "{{ key_list | map('extract', 'dictionary') }}"
- ansible.builtin.debug:
- var: extracted
- ```
#1: Initial revision
by
Iizuki
·
2023-10-11T12:48:09Z (about 1 year ago)
How to use Ansible extract filter in map with an external dictionary
Ansible's [extract](https://docs.ansible.com/ansible/latest/collections/ansible/builtin/extract_filter.html) filter is supposedly made for use in [map](https://jinja.palletsprojects.com/en/3.0.x/templates/#jinja-filters.map), but at the time of writing the documentation doesn't actually show how to use it together with the map filter.
The following outputs _VARIABLE IS NOT DEFINED!_, so clearly it's missing something. I would like it to output _[1, 2]_.
```ansible
- name: Extraction test
vars:
dictionary:
one: 1
two: 2
key_list:
- one
- two
extracted: "{{ key_list | map('extract', 'dictionary') }}"
ansible.builtin.debug:
var: extracted
```