Ansible - Nested Loop with list of dictionaries when dictionary values are lists

I have a list of dictionaries.

Dictionary keys are Cisco Switch names
Dictionary values are vlan IDs that are configured on the corresponding switch

"switch_vlan_ids": [
    {
        "switch01": ["1", "10", "30", "50"]
    },
    {
        "switch02": ["1", "20", "40", "60"]
    }
]

I'm attempting to loop through each switch and, on each switch, loop through each ID so that I can pass this ID to a command, eg show vlan {{id}}

The end goal, connect to a bunch of switches, verify that for each switch that the switch ports are configured for each vlan ID and, report an error/fail if not.

I tried a nested loop but, the inner loop complains that the outer loop loop_var isn't defined

 - name: Outer loop - Iterate through TOR Switches
   ansible.builtin.debug:
     msg: "TOR Name: {{ tor_item.key }}"
   loop: "{{ switch_vlan_ids | map('dict2items') | flatten }}"
   loop_control:
     loop_var: tor_item

 - name: Inner loop - Iterate through VLAN IDs
   ansible.builtin.debug:
     msg: "VLAN ID: {{ id_item.value }}"
   loop: "{{ tor_item.value }}"
   loop_control:
     loop_var: id_item

I've also attempted to just loop through the ID values but, this doesn't give the switch name so, if there's an error, I can't report the name of the switch with the error

- name: Set fact to loop through the tor_vlan_is_list values
  ansible.builtin.set_fact:
    switch_vlan_id_values: "{{ switch_vlan_ids | json_query('[].values(@)') | flatten }}"
- debug: var=switch_vlan_id_list_values

the above returns

"switch_vlan_id_values": ["1", "10", "30", "50", "1", "20", "40", "60"]

I've even tried a Jinja filter like below but abandoned it as I have no idea how I'd pass the values to an API call

- name: blah
  set_fact: | 
    {% for switch in switch_vlan_ids %}
    {% for name,ids in switch.items() %}
    {% for id in ids %}

Solution

Q: "Loop through each switch and, on each switch, loop through each ID."

A: Adding subelements('value') to the pipe does the job

- debug:
    msg: "{{ item.0.key }} {{ item.1 }}"
  loop: "{{ switch_vlan_ids|map('dict2items')|flatten|subelements('value') }}"

gives (abridged)

  msg: switch01 1
  msg: switch01 10
  msg: switch01 30
  msg: switch01 50
  msg: switch02 1
  msg: switch02 20
  msg: switch02 40
  msg: switch02 60

^{Example of a complete playbook for testing
- hosts: all

vars:

switch_vlan_ids:
- switch01: ["1", "10", "30", "50"]
- switch02: ["1", "20", "40", "60"]

tasks:

- debug:
msg: "{{ item.0.key }} {{ item.1 }}"
loop: "{{ switch_vlan_ids|map('dict2items')|flatten|subelements('value') }}"}