In 2.1 this would have been a deprecation warning. What you need is
something like:
with_items: "{{ existing_rules.files | default([]) | map(attribute='path')
| list }}"
That gives existing_rules.files a default of an empty list.
Also off note here, is that `when` statements are processed for each
iteration of the with_items loop, and not before the with_items. So your
with_items needs to process correctly all the time. As such, you could
remove `when` statement altogether as it isn't doing what you wanted it to
do.
On Wed, Nov 2, 2016 at 4:37 PM, Dan Lang <[email protected]> wrote:
> I'm testing existing roles and playbooks against Ansible 2.2, and I've
> noticed that several roles that I have written that take advantage of
> "when: variable is defined" or "when: variable is undefined" in tasks no
> longer work. This happens when a variable is used from a previous task,
> but is empty because maybe the results were empty. Here is an example:
>
> - name: Find existing rules
>> find: path=/etc/software/rules/
>> register: existing_rules
>> - name: Clean rules
>> file: path={{ item }} state=absent
>> with_items: "{{ existing_rules.files | map(attribute='path') | list }}"
>> when: existing_rules is defined
>
>
> In this case, there were no existing files, so the variable is empty and I
> would expect this *Clean rules* task to be skipped, but instead Ansible
> errors with something like
>
>> FAILED! => {"failed": true, "msg": "'dict object' has no attribute
>> 'files'"}
>
>
> What are the options then to allow for this sort of conditional logic?
> This definitely worked in Ansible 2.1, but I don't recall if any DEPRECATED
> warnings were given.
>
>
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--
Matt Martz
@sivel
sivel.net
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