How to use omit with Ansible and avoid any errors?

Question

I tried to use omit with an expression like this:

id: \"{{ openstack_networks.id | default(omit) }}\"

But it seems that it keeps failing w

Answer 1

Interestingly enough, Ansible will take something that reads like plain English:

id: "{{ omit if openstack_networks.id is not defined or openstack_networks.id }}"

The benefit here is that there are no additional parentheses.