Constructing a loop in Ansible - loops

Question

I'm writing an Ansible role that sets up the network. For each type of interface (ethernet, bond, bridge and vlan) I made a variable that contains the relevant data.
The idea is that I have to make a loop that runs the number of times that there are elements in a list variable ('bridge_ports') and for each pass a configuration file is created via a template.
Parts of the variable for bridge interfaces look like this:
my_network__bridge_interface:
address: "192.168.1.48",
bootproto: "static",
bridge_ports:
- eth0
- eth1
device: "br-mgmt",
...
To make the pass, I have tried with a with_subelements loop - but this does not go well.
- name: Create the network configuration file for the port on the bridge devices
template:
src: "{{ ansible_os_family }}.bridge_port.j2"
dest: "{{ my_network__ifconf_path }}/ifcfg-{{ item.1 }}"
with_subelements
- "{{ my_network__bridge_interface }}"
- bridge_ports
when: device_conf.type == 'bridge'
register: my_network__bridge_port_result
When I run the code, the error message comes: "could not find 'bridge_ports' key in iterated item '{}'".
I can see that I use with_subelements in the wrong way, but I don't really know what type of loop I would otherwise need.

Answer 1

The issue is with the yml definition. The below yml works:
my_network__bridge_interface:
- address: "192.168.1.48"
bootproto: static
bridge_ports:
- eth0
- eth1
device: br-mgmt
playbook -->
---
- hosts: localhost
tasks:
- include_vars: vars.yml
- debug:
msg: "{{ item.1 }}"
with_subelements:
- "{{ my_network__bridge_interface }}"
- bridge_ports
output -->
TASK [debug] ****************************************************************************************************************************
ok: [localhost] => (item=[{u'device': u'br-mgmt', u'bootproto': u'static', u'address': u'192.168.1.48'}, u'eth0']) => {
"msg": "eth0"
}
ok: [localhost] => (item=[{u'device': u'br-mgmt', u'bootproto': u'static', u'address': u'192.168.1.48'}, u'eth1']) => {
"msg": "eth1"
}