Question

122

Adding Square Brackets to JSON-Object

rated 0 times [ 127] [ 5] / answers: 1 / hits: 5708 / 5 Years ago, fri, february 22, 2019, 12:00:00

I get this JSON from my server. But to work with this JSON i need to Add Square Brackets to the MH Object. How can i do that. I tried .map but i dont get it to work for me. Is there any better solution. Or is .mapto use there. If yes can you show me a hint how to do that. Or is there a better solution?

{

    PAD: [

        {

            PADPS286: Dampf,

            PADPS124: Hans,

            PADPS60: 2018-05-01,

            PADPS143: 1,

            MH: {

                MHVSS1: [

                    {}

                ],

                MHDIRW214: 2017,

                MHDIRW215: 2018,

                birthdate: 2018-05-01,

                MHDIRW129 : 0

            }

        },

        {

            PADPS286: Snow,

            PADPS124: Jon,

            PADPS60: 2077-05-01,

            PADPS143: ,

            MH: {

                MHVSS1: [

                    {}

                ],

                MHDIRW214: 4,

                MHDIRW215: 4,

                birthdate: 2077-05-01,

                MHDIRW129 : 0

            }

        }

    ]

}

I need this JSON with sqare Brackets arround teh MH Object

{

    PAD: [

        {

            PADPS286: Dampf,

            PADPS124: Hans,

            PADPS60: 2018-05-01,

            PADPS143: 1,

            MH: [{

                MHVSS1: [

                    {}

                ],

                MHDIRW214: 2017,

                MHDIRW215: 2018,

                birthdate: 2018-05-01,

                MHDIRW129 : 0

            }]

        },

        {

            PADPS286: Snow,

            PADPS124: Jon,

            PADPS60: 2077-05-01,

            PADPS143: ,

            MH: [{

                MHVSS1: [

                    {}

                ],

                MHDIRW214: 4,

                MHDIRW215: 4,

                birthdate: 2077-05-01,

                MHDIRW129 : 0

            }

        ]}

    ]

}

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grayson

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answered 5 Years ago bryonk · Accepted Answer

It's not really adding square brackets, it's wrapping the MH object in an array.

Anyway, here's a .map statement that will do it for you (without mutating the original data, hence the Object.assign shenanigans):

data.PAD = data.PAD.map((padObj) => Object.assign({}, padObj, {MH: [padObj.MH]}));

Basically, for each entry in the PAD array, we're merging three objects there:

a fresh empty object {}

the original padObj entry

a small object that only has the MH element from the original padObj wrapped in an array.

The output is as expected:

{

  PAD: [

    {

      PADPS286: Dampf,

      PADPS124: Hans,

      PADPS60: 2018-05-01,

      PADPS143: 1,

      MH: [

        {

          MHVSS1: [{}],

          MHDIRW214: 2017,

          MHDIRW215: 2018,

          birthdate: 2018-05-01,

          MHDIRW129 : 0

        }

      ]

    },

    {

      PADPS286: Snow,

      PADPS124: Jon,

      PADPS60: 2077-05-01,

      PADPS143: ,

      MH: [

        {

          MHVSS1: [{}],

          MHDIRW214: 4,

          MHDIRW215: 4,

          birthdate: 2077-05-01,

          MHDIRW129 : 0

        }

      ]

    }

  ]

}