Thanks for this reply. To simplify tests for existing variables I now use
builtin jinja2 filter "*default()*" such as "*{% for person in persons |
default('') %}*" to do not first have to test if the variable "*persons*"
is defined. If I remove the part "* | default('')*" from the for-loop and
the variable is not defined ansible will raise an error.
Matt Martz schrieb am Montag, 13. Juli 2020 um 15:57:53 UTC+2:
> Ansible actually has a feature that predates the jinja2 change that works
> exactly the same. We already have an AnsibleUndefined that performs the
> exact same functionality:
> https://github.com/ansible/ansible/blob/devel/lib/ansible/template/__init__.py#L274
>
> This functionality has been in place since Ansible 2.8.
>
> Due to the above, you need to do nothing, and you already get this
> functionality in Ansible
>
> On Sun, Jul 12, 2020 at 4:43 AM Baeschtu <[email protected]> wrote:
>
>> According to the release notes of Jinja2 Version 2.11.0 (released on
>> 2020-01-27) there is a new class named "ChainableUndefined" to handle
>> undefined variables on multiple levels in Jinja2 templates. Currently, I
>> use a ansible task using the module "template" to render jinja2 templates.
>> However, I don't know how to pass this new "ChainableUndefined" class to
>> the parameter "undefined" in the Jinja2 environment via the ansible module.
>>
>> Does anyone know how to set the parameter "undefined" to
>> ChainableUndefined through the ansible "template" module?
>> Does the module "template" only support the "StrictUndefined" class,
>> currently?
>>
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>>
>
>
> --
> Matt Martz
> @sivel
> sivel.net
>
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