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json_query: Add examples for starts_with and contains (#72821)

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* Add a note about - data structure returned from register variables
needs to be parsed using ``to_json | from_json`` in order to
get correct result.
* Add examples for starts_with and contains

Fixes: https://github.com/ansible-collections/community.general/issues/320

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
This commit is contained in:
Abhijeet Kasurde 2020-12-04 01:22:00 +05:30 committed by GitHub
parent 0a7fcd135c
commit 38f21557ba
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1 changed files with 21 additions and 3 deletions
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22
docs/docsite/rst/user_guide/playbooks_filters.rst
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@ -749,8 +749,8 @@ To extract all server names::
To extract ports from cluster1::
- ansible.builtin.name: Display all ports from cluster1
debug:
- name: Display all ports from cluster1
ansible.builtin.debug:
var: item
loop: "{{ domain_definition | community.general.json_query(server_name_cluster1_query) }}"
vars:
@ -784,6 +784,24 @@ To get a hash map with all ports and names of a cluster::
vars:
server_name_cluster1_query: "domain.server[?cluster=='cluster2'].{name: name, port: port}"
To extract ports from all clusters with name starting with 'server1'::
- name: Display all ports from cluster1
ansible.builtin.debug:
msg: "{{ domain_definition | to_json | from_json | community.general.json_query(server_name_query) }}"
vars:
server_name_query: "domain.server[?starts_with(name,'server1')].port"
To extract ports from all clusters with name containing 'server1'::
- name: Display all ports from cluster1
ansible.builtin.debug:
msg: "{{ domain_definition | to_json | from_json | community.general.json_query(server_name_query) }}"
vars:
server_name_query: "domain.server[?contains(name,'server1')].port"
.. note:: while using ``starts_with`` and ``contains``, you have to use `` to_json | from_json `` filter for correct parsing of data structure.
Randomizing data
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