Add an item to a list dependent on a conditional in ansible

Question

I would like to add an item to a list in ansible dependent on some condition being met.

This doesn\'t work:

  some_dictionary:
    app:
       - some         


        

Answer 1

Is there a reason you have to do everything in one go?

This is pretty easy if you specify the additional item(s) to add in separate vars, as you can just do list1 + list2.

---
- hosts: localhost
  gather_facts: False
  connection: local
  vars:
    mylist:
      - one
      - two
    mycondition: False
    myconditionalitem: foo
  tasks:
    - debug:
        msg: "{{ mylist + [myconditionalitem] if mycondition else mylist }}"