nested variables - again

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1

I see a lot of discussion about nested variables in Ansible, but I have not yet been able to find a solution to my problem. So yet again another question about nested variables (pease forgive me if this has been answered before, just point me at the previous discussions).

I want to do define a structure like the following:

STRUCTURE:
list1:

  • {var1: val1, var2, val2, var3, val3}

list2:

  • {var1: val1, var2, val2, var3, val3}

list3:

  • {var1: val1, var2, val2, var3, val3}

Then is a playbook I want to be able to use the value in a variable to select one of the lists:

vars:
list: list1

  • debug: msg=“var1={{item.var1}}, var2={{item.var2}}, var3={{item.var3}}”
    with_(items,subelements,nested,dict,?)
  • STRUCTURE
  • list

Essentially, I need to have a list of dictionaries, I need to select one of those dictionaries with a key, and then I need to pull the values out of the selected dictionary. What is the best way to do this?
Thanks,
-Mark

2

Will this do what you need? using structure[list] instead of trying to nest.

`

3

That is close but not quite what I am looking for. I oversimplified my description of the problem. I should have said “I need to select one or more of those dictionaries with keys”. So ‘list’ is a list of one or more keys:

list:

  • list1
  • list2

And that is where this got complicated. The temptation is to do something like this:

  • debug: msg=“var1={{STRUCTURE.{{item}}.val1}}, var2={{STRUCTURE.{{item}}.val2}}, var3={{STRUCTURE.{{item}}.val3}}”
    with_items:
  • “{{list}}”

Of course, I can’t have nested braces, but your example gave me the clue I needed to make this work. Following your lead I came up with this:

  • debug: msg=“var1={{STRUCTURE[item].0.val1}}, var2={{STRUCTURE[item].0.val2}}, var3={{STRUCTURE[item].0.val3}}”
    with_items:
  • “{{list}}”

And that got me what I needed!
Thanks for your help!
-Mark