How to Insert array inside JSON object? - json

Question

I have a json file that I need to reformat - insert array around some of the nested objects.
It looks like that:
{
"test": {
"UserData": "test",
"password": "123"
},
"test2": {
"UserData": "test2",
"password": "123"
},
"test3": {
"UserData": "test3",
"password": "123"
}
}
And I need it to look like that:
{
"test": [{
"UserData": "test",
"password": "123"
}],
"test2": [{
"UserData": "test2",
"password": "123"
}],
"test3": [{
"UserData": "test3",
"password": "123"
}]
}
I'm using Ansible, jq and bash.

Answer 1

Given the data
d1:
test:
UserData: test
password: '123'
test2:
UserData: test2
password: '123'
test3:
UserData: test3
password: '123'
Convert the dictionaries to the first items in the lists. For example
d2_query: '[].[key, [value]]'
d2: "{{ dict(d1|dict2items|json_query(d2_query)) }}"
gives
d2:
test:
- UserData: test
password: '123'
test2:
- UserData: test2
password: '123'
test3:
- UserData: test3
password: '123'
Example of a complete playbook for testing
- hosts: localhost
vars:
d1:
test:
UserData: test
password: '123'
test2:
UserData: test2
password: '123'
test3:
UserData: test3
password: '123'
d2_query: '[].[key, [value]]'
d2: "{{ dict(d1|dict2items|json_query(d2_query)) }}"
tasks:
- debug:
var: d2

Answer 2

Using jq: Select each field of the object with .[], and update it |= to itself wrapped in an array [.].
jq '.[] |= [.]' file.json
{
"test": [
{
"UserData": "test",
"password": "123"
}
],
"test2": [
{
"UserData": "test2",
"password": "123"
}
],
"test3": [
{
"UserData": "test3",
"password": "123"
}
]
}
Demo

Answer 3

you could use this playbook (using dict2items and combine):
- name: "tips4"
hosts: localhost
vars:
json1:
test:
UserData: test
password: '123'
test2:
UserData: test2
password: '123'
test3:
UserData: test3
password: '123'
tasks:
- name: set var
set_fact:
newjson: "{{newjson|d({})|combine({item.key:[item.value]}) }}"
loop: "{{ json1|dict2items }}"
- name: disp result
debug:
msg: "{{ newjson }}"
result:
ok: [localhost] => {
"msg": {
"test": [
{
"UserData": "test",
"password": "123"
}
],
"test2": [
{
"UserData": "test2",
"password": "123"
}
],
"test3": [
{
"UserData": "test3",
"password": "123"
}
]
}
}