Question 238519 in Json Question posted in
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Json – jq: format array of objects using map or from_entries

I have a massive JSON output like this

{
    "result": [
        {
            "name": "Fields",
            "listFields": [
                [
                    "apple"
                ],
                [
                    "Banana__c"
                ]
            ],                    
            "fields": [
                {
                    "name": "apple",
                    "displayName": "Apple",
                    "color": "red",
                    "price": 20
                },
                {
                    "name": "Banana__c",
                    "displayName": "Banana",
                    "color": "yellow",
                    "price": 18
                }
            ]
        }
    ],
    "success": true
}

The desired output would be

{
   "fields": [
      "apple",
      "Banana__c"
   ],
   "Brand": "Kroger",
   "fruitNames": {
      "apple": "Apple",
      "Banana__c": "Banana"
   }
}

{(.name)[], "Brand": "Kroger", "fruitNames" .fields|map({(.name): .displayName})}
or
.result[] | (.fields | map({key: "fields.name.(.name)", value}) | from_entries)
in https://jqplay.org/# throw syntax errors. Helpful manual here: https://jqlang.github.io/jq/manual/v1.5/

Tags:

3

Answers


  1. 0

    The following should work:

    jq '.result[] | {"fields": [.fields[].name], "Brand": "Kroger",
    "fruitNames": .fields|map({(.name): .displayName}) | add}' test.json

    {
  "fields": [
    "apple",
    "Banana__c"
  ],
  "Brand": "Kroger",
  "fruitNames": {
    "apple": "Apple",
    "Banana__c": "Banana"
  }
}
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  2. 0

    Here’s one way using from_entries:

    .result[].fields | map(.value = .displayName)
| {fields: map(.name), Brand: "Kroger", fruitNames: from_entries}

    {
  "fields": [
    "apple",
    "Banana__c"
  ],
  "Brand": "Kroger",
  "fruitNames": {
    "apple": "Apple",
    "Banana__c": "Banana"
  }
}

    Demo

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  3. 0

    Or even another way:

    .result
| map( .fields |
      {
       "fields": map(.name),
       "Brand": "Kroger",
       "fruitNames": (reduce .[] as $f ({}; . + {($f.name): $f.displayName}))
      }
     )

    Try it on jqplay.org.

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