Hello all,

I am using ansible for automate the users creation in one of our tools so I 
have the following users file in vars with the user's info and also, the 
user can have some secondary groups assigned besides the main group:

[root@admin oort]# cat roles/ON4_project_managment/vars/users.yml
---
users_account:
  user username:
    status: new
    login_name: testuser
    main_group_name: natalie-alpha
    secondary_groups:
    type_authentication: core
    mail: 'Email="test1mail"'
    telf: 'Telf="6123456789"'
    role: 'role="admin"'
    user_info: 'user_info="researcher"'
    start_date: 'start_date="2015/12/13"'
    end_date: 'end_date="2016/12/13"'
    network:
    acl:
  user2 username2:
    status: new 
    login_name: testuser2
    main_group_name: natalie-alpha
    secondary_groups:
      - group1
      - oneadmin
      - SGE
    type_authentication: core
    mail: 'Email="test2@mail"'
    telf: 'Telf="465465465"'
    role: 'role="admin"'
    user_info: 'user_info="researcher"'
    start_date: 'start_date="2015/11/13"'
    end_date: 'end_date="2016/11/13"'
    network:
    acl:

Then, in the playbook I read the list and also the secondary groups to 
assign the secondary groups to the user. My problem is that it can happen 
that the user does not belong to any secondary group like in the users.yml 
example file from above so right now, if this happens, I get this error:

TASK: [ON4_project_managment | Assign the secondary groups for the user] 
****** 
fatal: [m-opennebula4] => the key secondary_groups should point to a list, 
got 'None'

But I would like that the task is only executed when the user has some 
secondary group assigned.

This is the task (right now it it is just simplefied with "echo" but it is 
the same approach:

- name: Assign the secondary groups for the user
  sudo: True
  sudo_user: oneadmin
  shell: echo {{ item.0.login_name }};echo {{ item.1 }}
  with_subelements:
     - users_account
     - secondary_groups
  when: item.1 is defined
  tags:
    - Assign_secondary_group
    - esteban

I have been playing with != none or !="" or is defined but I always get the 
error :( .. Probably, I am not understanding it correctly and I am sure 
some of you already needed to face this issue, so I would appreciate your 
help :)

I hope I have explained myself correctly because I am a bit tired right now 
:/

Thanks in advance,
Esteban

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