when ... is defined not woring as expected?

[Kai]

Hi there!

ansible-playbook (v. 2.2.0.0) throws an error message that I do not
understand in my conext: "'pkg_repo_list' is undefined"

The task reads:
----------------------------------------
- name: ensure defined apt keys
apt_key:
state: present
id: "{{pkg_item.id}}"
keyserver: "{{pkg_item.server}}"
with_items: "{{pkg_repo_list.repo_keys}}"
loop_control:
loop_var: pkg_item
become: True
when: (pkg_repo_list is defined) and (pkg_repo_list.repo_keys is
defined)
----------------------------------------

The task is the first of two tasks enclosed in a block:
- block:
[...]
when: pkg_repo_list is defined

(Because of this conditioned block the "when" in the tasks first read
"when: pkg_repo_list.repo_keys is defined", which resulted in the same
error message.)

Shouldn't this task be skipped (in fact: the complete block) and thus
result in no error? What is it that I do not seen here?

Cheers, Kai

[Brian Coca]

when executes for each item in the loop and cannot short circuit the with_ as documented here http://docs.ansible.com/ansible/playbooks_conditionals.html#loops-and-conditionals

----------

Brian Coca

[Kai]

Hi Brian,

thanks a lot for the pointer / the solution. A double-default does the
trick in this case :)

with_items: "{{ (pkg_repo_list|default({})).repo_keys | default([]) }}"

Cheers, Kai

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