Rename JSON key field with value in object - json

Question

Have the following json output:
[
{
"id": "47",
"canUpdate": true,
"canDelete": true,
"canArchive": true,
"info": [
{
"key": "problem_type",
"value": "PAN",
"valueCaption": "PAN",
"keyCaption": "Category"
},
{
"key": "status",
"value": 3,
"valueCaption": "Closed",
"keyCaption": "Status"
},
{
"key": "insert_time",
"value": 1466446314000,
"valueCaption": "2016-06-20 14:11:54.0",
"keyCaption": "Request time"
}
As you can see under "info" they actually label the key:value pair as "key": "problem_type" and "value": "PAN" and then "valueCaption": "PAN" "keyCaption": "Category". What I need to do is remap the file so that, in this example, it shows as "problem_type": "PAN" and "Category": "PAN". What would be the best method to iterate through the output to remap the key:value pairs in this manner?
How it needs to be:
[
{
"id": "47",
"canUpdate": true,
"canDelete": true,
"canArchive": true,
"info": [
{
"problem_type": "PAN",
"Category": "PAN"
},
{
"status": 3,
"Status": "Closed"
},
{
"insert_time": 1466446314000,
"Request time": "2016-06-20 14:11:54.0"
}

Answer 1

Here is a jq solution which uses Update assignment |=
.[].info[] |= {(.key):.value, (.keyCaption):.valueCaption}
Sample Run (assumes data in data.json)
$ jq -M '.[].info[] |= {(.key):.value, (.keyCaption):.valueCaption}' data.json
[
{
"id": "47",
"canUpdate": true,
"canDelete": true,
"canArchive": true,
"info": [
{
"problem_type": "PAN",
"Category": "PAN"
},
{
"status": 3,
"Status": "Closed"
},
{
"insert_time": 1466446314000,
"Request time": "2016-06-20 14:11:54.0"
}
]
}
]
Try it online at jqplay.org