Json search and print - json

Question

I've been trying to use jq parser to help me extract information from json files.
Here is an example snippet
{
"main_attribute": {
"name": {
"display_name": "abc"
},
"address": {
"unit": "1",
"street": "Dundas",
"suburb": "Syd",
"state": "NSW"
},
"financial_debt": {
"bank_loan": true
}
},
"secondary_attr": {
"income": {
"pretax": 100000
},
"automobile": {
"make": "Citroen",
"model": 2015,
"new": true
},
"property": {
"property_owned": 1,
"owned_since": 2000,
"first_sale": true
},
"education": {
"degree": "MS",
"graduated": 1990,
"financial_debt": {
"bank_loan": false
}
}
}
}
I need to find the blocks where "financial_debt" is true. This field could be either in the main_attribute (as a global value) or in the secondary attribute.
Expected output:
financial_debt: bank_loan on "automobile" and "property"
Can you please advise how to go about doing this search using jq?

Answer 1

This is by no means the most efficient way, but it is functional. It returns a boolean value specifying whether or not there is a true boolean value under the financial_debt property.
jq '[recurse | .financial_debt? | select(. != null) | recurse | booleans] | any'

Answer 2

tostream can be used to find paths containing "financial_debt" as follows:
tostream
| select(length==2)
| select(.[0] | contains(["financial_debt"]))
with this filter in filter.jq and data in data.json
$ jq -M -c -f filter.jq data.json
produces
[["main_attribute","financial_debt","bank_loan"],true]
[["secondary_attr","education","financial_debt","bank_loan"],false]
This intermediate result can be used along with reduce, setpath, getpath and a filter such as
. as $d
| reduce ( tostream
| select(length==2)
| select(.[0] | contains(["financial_debt"]))) as [$p,$v] (
{}
; setpath($p[:-1]; $d | getpath($p[:-1]))
)
to produce
{
"main_attribute": {
"financial_debt": {
"bank_loan": true
}
},
"secondary_attr": {
"education": {
"financial_debt": {
"bank_loan": false
}
}
}
}