ternary¶

Collection Note

This module is part of the ansible.builtin collection. To install the collection, use:

ansible-galaxy collection install ansible.builtin

Added in version 1.9.

Synopsis¶

Return the first value if the input is V(True), the second if V(False).

Parameters¶

Parameter	Defaults / Choices	Comments
_input bool required		A boolean expression, must evaluate to V(True) or V(False).
false_val any		Value to return if the input is V(False).
none_val any		Value to return if the input is V(None). If not set, V(None) will be treated as V(False). Version Added: 2.8
true_val any required		Value to return if the input is V(True).

Notes¶

Note

Vars as values are evaluated even when not returned. This is due to them being evaluated before being passed into the filter.

Examples¶

# set first 10 volumes rw, rest as dp
volume_mode: "{{ (item|int < 11)|ternary('rw', 'dp') }}"

# choose correct vpc subnet id, note that vars as values are evaluated even if not returned
vpc_subnet_id: "{{ (ec2_subnet_type == 'public') | ternary(ec2_vpc_public_subnet_id, ec2_vpc_private_subnet_id) }}"

- name: service-foo, use systemd module unless upstart is present, then use old service module
  service:
    state: restarted
    enabled: yes
    use: "{{ (ansible_service_mgr == 'upstart') | ternary('service', 'systemd') }}"

Return Values¶

Key	Data Type	Description	Returned
_value	any	The value indicated by the input.

Authors¶

Brian Coca (@bcoca)