set_fact undefined variable issue when concat string to itself.

[Shifa Shaikh]

I need to set_fact variable and contact to itself a list of items as below:

    - set_fact:
        excludefolders: "{{ excludefolders + ' -o -name ' + item | default('') }}"
      with_items: "{{ lookup('vars', 'MY_' + Layer).split(',') }}"

Getting error:

FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'excludefolders' is undefined\n\nThe error appears to be in '/app/test.yml': line 86, column 6, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n   - set_fact:\n     ^ here\n"}

Is it neccessary to defined another set_fact before like below or is there a better solution to the issue ?

    - set_fact:
        excludefolders: ""


    - set_fact:
        excludefolders: "{{ excludefolders + ' -o -name ' + item | default('') }}"
      with_items: "{{ lookup('vars', 'EXCLUDE_' + Layer).split(',') }}"

[Abhijeet Kasurde]

You can try this -

    - set_fact:
        excludefolders: "{{ excludefolders | default('') + ' -o -name ' + item | default('') }}"

      with_items: "{{ lookup('vars', 'EXCLUDE_' + Layer).split(',') }}"

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Thanks,

Abhijeet Kasurde

[Shifa Shaikh]

It helped. Thank you @Abhijeet

On Wednesday, February 26, 2020 at 12:09:19 PM UTC+5:30, Abhijeet Kasurde wrote:

You can try this -

    - set_fact:
        excludefolders: "{{ excludefolders | default('') + ' -o -name ' + item | default('') }}"
      with_items: "{{ lookup('vars', 'EXCLUDE_' + Layer).split(',') }}"

On Wed, Feb 26, 2020 at 12:00 PM Shifa Shaikh <shif...@gmail.com> wrote:

I need to set_fact variable and contact to itself a list of items as below:

    - set_fact:
        excludefolders: "{{ excludefolders + ' -o -name ' + item | default('') }}"
      with_items: "{{ lookup('vars', 'MY_' + Layer).split(',') }}"

Getting error:

FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'excludefolders' is undefined\n\nThe error appears to be in '/app/test.yml': line 86, column 6, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n   - set_fact:\n     ^ here\n"}

Is it neccessary to defined another set_fact before like below or is there a better solution to the issue ?

    - set_fact:
        excludefolders: ""


    - set_fact:
        excludefolders: "{{ excludefolders + ' -o -name ' + item | default('') }}"
      with_items: "{{ lookup('vars', 'EXCLUDE_' + Layer).split(',') }}"

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To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/3c491483-c408-4176-98dd-09a3bed1b47e%40googlegroups.com.

--

Thanks,

Abhijeet Kasurde