postgresql/tasks/databases.yml

---
- name: Ensure PostgreSQL databases are present.
  postgresql_db:
    name: "{{ item.name }}"
    lc_collate: "{{ item.lc_collate | default('en_US.UTF-8') }}"
    lc_ctype: "{{ item.lc_ctype | default('en_US.UTF-8') }}"
    encoding: "{{ item.encoding | default('UTF-8') }}"
    login_host: "{{ item.login_host | default('localhost') }}"
    login_password: "{{ item.login_password | default(omit) }}"
    login_user: "{{ item.login_user | default('postgres') }}"
    port: "{{ item.port | default('5432') }}"
    state: "{{ item.state | default('present') }}"
  with_items: "{{ postgresql_databases }}"