Apply multiple regexp from dict on a field and get result for each

I am trying to apply multiple regexp to a string field and return true if it matchs for each. Here is my dictionary containing all the regexp :

myconfig:
  kindA:
    regexp: "^exampleA.+$"
  kindB:
    regexp: "^exampleB.+$"
  kindC:
    regexp: "^exampleC.+$"

Desired result:

{
  "kindA": false,
  "kindB": true, # description field matched !
  "kindC": false
}

The code I try in my playbook :

- ansible.builtin.set_fact:
   regex_result: "{{ regex_result | default({}) |
     combine({ item.key: (my_current_obj.description
       | regex_search(item.value.regexp)
       | bool) }
     }}"
 loop: "{{ lookup('dict', myconfig) }}"

I feel like it should work but linter says this template is invalid.

Solution

Get the list of the attributes regex

  regex: "{{ myconfig | dict2items | map(attribute='value.regexp') }}"

gives

  regex:
    - ^exampleA.+$
    - ^exampleB.+$
    - ^exampleC.+$

Search this list's items in the variable description. The function regex_search returns None when a regex is not found. Use the filter default and set the 2nd argument to true. Quoting:

If you want to use default with variables that evaluate to false you have to set the second parameter to true.

This helps you to convert None to an empty string and test the length

  search: |
    [
    {% for r in regex %}
    {{ description | regex_search(r) | d('', true) | length > 0 }},
    {% endfor %}
    ]

gives for example, for description=exampleAX

  search:
    - true
    - false
    - false

Create the dictionary result

  result: "{{ dict(myconfig | zip(search)) }}"

gives what you want

  result:
    kindA: true
    kindB: false
    kindC: false

As a side note: A simple option is searching joined regex

  result: "{{ description | regex_search(regex | join('|'))
                          | d('', true)
                          | length > 0 }}"

^{Example of a complete playbook for testing
- hosts: localhost

vars:

myconfig:
kindA:
regexp: "^exampleA.+$"
kindB:
regexp: "^exampleB.+$"
kindC:
regexp: "^exampleC.+$"

regex: "{{ myconfig | dict2items | map(attribute='value.regexp') }}"
search: |
[
{% for r in regex %}
{{ description | regex_search(r) | d('', true) | length > 0 }},
{% endfor %}
]

result: "{{ dict(myconfig | zip(search)) }}"
resul2: "{{ description | regex_search(regex | join('|'))
| d('', true)
| length > 0 }}"

tasks:

- debug:
var: regex
- debug:
var: search
- debug:
var: result
- debug:
var: resul2

shell> ansible-playbook pb.yml -e description=exampleAX

PLAY [localhost] ****************************************************************************************************

TASK [debug] ********************************************************************************************************
ok: [localhost] =>
regex:
- ^exampleA.+$
- ^exampleB.+$
- ^exampleC.+$

TASK [debug] ********************************************************************************************************
ok: [localhost] =>
search:
- true
- false
- false

TASK [debug] ********************************************************************************************************
ok: [localhost] =>
result:
kindA: true
kindB: false
kindC: false

TASK [debug] ********************************************************************************************************
ok: [localhost] =>
resul2: true

PLAY RECAP **********************************************************************************************************
localhost : ok=4 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0}