[Feature Request] default filter on dictionnary and undefined parent key

[jdorel]

Expected Behavior

If the parent key non_existent_key does not exist, the print statement should print the default value string.

For details (and some workarounds found by the community), see:

• https://stackoverflow.com/questions/19614027/jinja2-template-variable-if-none-object-set-a-default-value
• "dict object has no attribute" with default() filter ansible/ansible#30944

Actual Behavior

If the parent key does not exist, it throws an error.

Template Code

{{ mydict.non_existent_key.var | default("string") }}

[EtiennePelletier]

I'm working on this.