Searching a value in a list of dict in Ansible - ansible

Question

First of all, I know it's kind of a duplicate question : I found similar topics here :
Searching for key in a list of dicts in Ansible, Ansible lookup values from complex structure?
I don't know if I have to ask my question directly within those topics or not, if so, I sincerely apologize.
Anyways, in Ansible, I need to extract a specific ID within an API query from a web application.
I have this code :
- name: API query
uri:
method: GET
url: "{{ apiquery }}"
headers:
Content-Type: application/json
App-Token: "{{ appToken }}"
Session-Token: "{{ currentSessionToken.json.session_token }}"
register: wantedState
- name: DEBUG | wantedState output
debug:
msg: "{{ wantedState }}"
The message is this :
ok: [localhost] => {
"msg": {
"accept_range": "State 1000",
"access_control_expose_headers": "content-type, content-range, accept-range",
"cache_control": "no-store, no-cache, must-revalidate",
"changed": false,
"connection": "close",
"content_length": "138",
"content_range": "0-1/2",
"content_type": "application/json; charset=UTF-8",
"cookies": {},
"cookies_string": "",
"date": "Thu, 24 Jan 2019 11:51:42 GMT",
"expires": "Mon, 26 Jul 1997 05:00:00 GMT",
"failed": false,
"json": {
"content-range": "0-1/2",
"count": 2,
"data": [
{
"1": "state1",
"2": 12
},
{
"1": "state11",
"2": 10
}
],
"order": "ASC",
"sort": 1,
"totalcount": 2
},
"msg": "OK (138 bytes)",
"pragma": "no-cache",
"redirected": false,
"server": "Apache/2.4.18 (Ubuntu)",
"status": 200,
"url": "..."
}
}
What I need is to get the proper ID associated with the stateName variable.
I followed the advice given in the two other topics and my syntax is this one:
- name: DEBUG | Displaying ID
debug:
msg: "{{ (wantedState.json.data | selectattr('1', 'equalto', stateName) | list | first).2 }}"
I got the following error message :
"msg": "The task includes an option with an undefined variable. The error was: dict object has no element 1"
I don't know why my query is not functioning properly to be honnest ...
Thanks in advance,
Simon

Answer 1

Jinja2 converts integer-like strings to numbers under the hood.
So '1' and '2' are used to refer the first and the second elements of a list.
I don't know any way to disable this behaviour in Jinja2.
You have correct syntax in general. If your data items have keys a and b and not 1 and 2, you'd be OK.
For your case you can use JMESPath to filter items:
- name: DEBUG | Displaying ID
debug:
msg: "{{ (wantedState.json.data | json_query('[?\"1\"==`'+stateName+'`]') | first)['2'] }}"
Note that:
double quotes around 1 are escaped, because we are inside YAML quoted string msg: "..."
there are JMESPath literal quotes (back quote) around stateName value
resulting value is accessed via ['2'] (string) and not .2 (int)