[SOLVED] Transform an object with an array into an array

Transform an object with an array into an array

I have the following data structure:

const data = {
  "firstName": "A",
  "lastName": "B",
  "address": [{
    "country": "France",
    "city": "Paris"
  },
    {
      "country": "Italy",
      "city": "Rome"
    }
  ],
};

Using Ramda I would like to transforms it into:

const result = [
  {
    "firstName": "A",
    "lastName": "B",
    "address": {
      "country": "France",
      "city": "Paris"
    },
  },
  {
    "firstName": "A",
    "lastName": "B",
    "address": {
      "country": "Italy",
      "city": "Rome"
    },
  },
];

Solution

You can use a converge function to fork the prop address and then join it with the main object for each address in the list:

/**
 * R.pick could be replaced with R.omit
 * to let you black list properties:
 * R.omit(['address']); https://ramdajs.com/docs/#omit
**/
const createByAddress = R.converge(R.map, [
  R.pipe(R.pick(['firstName', 'lastName']), R.flip(R.assoc('address'))),
  R.prop('address'),
]);

const data = {
  "firstName": "A",
  "lastName": "B",
  "address": [{
    "country": "France",
    "city": "Paris"
    },
    {
      "country": "Italy",
      "city": "Rome"
    }
  ],
};

console.log(createByAddress(data));

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