CODEWITHSUNDEEP
jsonansiblejinja2ansible-2.x
Vinny
Vinny

Reputation: 316

Merge 2 json arrays based on their keys

How can I merge 2 json arrays based on the same keys and add a 3rd item from the input json pog_id in the output json file? I have tried with the code mentioned below that is creating 2 different arrays inside a key in json and not merging the values inside a same array.

mergedobject.json

[
    {
        "name": "ALL_DMZ",
        "objectIds": [
            "29570",
            "29571"
        ],
        "orgid": "777777",
        "pog_id": "333333"
    },
    {
        "name": "ALL_DMZ",
        "objectIds": [
            "729548",
            "729549",
            "295568"
            
        ],
        "orgid": "777777",
        "pog_id": "333333"
    }
    
]

Playbook

- set_fact:
        output: "{{ output|d([]) + [{'orgid': item.0,
                                     'objectIds': item.1|
                                                  map(attribute='objectIds')|
                                                  list}] }}"
      loop: "{{ mergedobject|groupby('name') }}"

Current Output

[
    {
        "name": "ALL_DMZ",
        "objectIds": [
        [   "29570",
            "29571"
        ],
        [
            "729548",
            "729549",
            "295568"  
        ]
      ]
        "orgid": "777777"
    }
    
]

Expected Output

[
    {
        "name": "ALL_DMZ",
        "objectIds": [
            "29570",
            "29571",
            "729548",
            "729549",
            "295568"  
      ]
        "orgid": "777777",
        "pog_id": "333333"
    }
    
]

Upvotes: 1

Views: 388

Answers (1)

Vladimir Botka
Vladimir Botka

Reputation: 67984

Given the data 

  mergedobject:
    - name: ALL_DMZ
      objectIds: ['29570', '29571']
      orgid: '777777'
      pog_id: '333333'
    - name: ALL_DMZ
      objectIds: ['729548', '729549', '295568']
      orgid: '777777'
      pog_id: '333333'

combine the items in the list. Append the lists in attributes

  output: "{{ mergedobject|combine(list_merge='append') }}"

gives

  output:
    name: ALL_DMZ
    objectIds: ['29570', '29571', '729548', '729549', '295568']
    orgid: '777777'
    pog_id: '333333'

You can put the result into a list

  output: "[{{ mergedobject|combine(list_merge='append') }}]"

gives what you want

  output:
    - name: ALL_DMZ
      objectIds: ['29570', '29571', '729548', '729549', '295568']
      orgid: '777777'
      pog_id: '333333'

Upvotes: 1

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