Syntax error for nested variable in Ansible - variables

Question

I have included the below variable file in my playbook:
more vars/was_vars.yaml
::::::::::::::
10.9.12.112: "/was/IBM/WebSphere"
10.8.10.28: "/was/IBM/profiles"
10.7.120.129: "/app/tmp"
Here is my playbook:
- name: Configure nodes
hosts: dest_nodes
user: "{{ USER }}"
tasks:
- name: Construct File Path on "{{ inventory_hostname }}".
command: "touch {{ BASEPATH }}/{{ ( item | splitext)[1] }}/del.tmp"
when: "{{ Layer == 'APP' }}"
file: path="{{ "{{ inventory_hostname }}" }}/{{ App_List }}/{{ Rel_Path }}/del.tmp state=directory mode=u=rwx,g=rw,o=r"
when: "{{ Layer == 'WAS' }}"
"{{ inventory_hostname }}" gets substituted with "10.9.12.112" which should then get further substituted to "/was/IBM/WebSphere" as stated in the included vars("was_vars.yaml") file.
I'm getting the below Syntax error with my current code:
ERROR! conflicting action statements: command, file
The error appears to be in '/app/Ansible/deploy.yml': line 133, column 4, but may
be elsewhere in the file depending on the exact syntax problem.
The offending line appears to be:
tasks:
- name: Construct File Path on "{{ inventory_hostname }}".
^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:
with_items:
- {{ foo }}
Should be written as:
with_items:
- "{{ foo }}"
I'm on the latest version on ansible.
Can you please suggest?

Answer 1

1) The dash is missing in front of the file module.
2) Nested expansion is not possible (wrong: "{{ "{{ inventory_hostname }}" }}").
3) when: condition is expanded by default.
4) The whole string shall be quoted when the expansion of a variable is included.
5) The index of the expansion {{ ( item | splitext)[1] }} wont work.
6) It's not clear where do the variable item and the filter splitext come from.
The correct syntax might be
tasks:
- name: "Construct File Path on {{ inventory_hostname }}."
command: "touch {{ BASEPATH }}/{{ item|splitext|first }}/del.tmp"
when: Layer == 'APP'
- file:
path: "{{ inventory_hostname }}/{{ App_List }}/{{ Rel_Path }}/del.tmp"
state: directory
mode: "u=rwx,g=rw,o=r"
when: Layer == 'WAS'
(not tested)

Answer 2

Thank you for the inputs but what we are actually looking for is how to get the expansion to work...
I.e the inventory_hostname would be substituted with host ip say 10.9.12.112 ... But how do we code to get "/was/IBM/WebSphere" substituted matching the IP from the included variable file?

Answer 3

Can you try as :
"{{vars[inventory_hostname]}}"
or if you want one more level use as :
"{{vars[vars[inventory_hostname]]}}"