I have an array of objects like the below:
const data = [{label: 'ABC', id: '1', emp:{empLabel: 'Test1', empId: '12'}},
{label: 'ABC', id: '1', emp:{empLabel: 'Test2', empId: '13'}},
{label: 'DEF', id: '2', emp:{empLabel: 'Test11', empId: '14'}},
{label: 'DEF', id: '2', emp:{empLabel: 'Test12', empId: '15'}},
{label: 'PQR', id: '3', emp:{empLabel: 'Test13', empId: '16'}},
{label: 'XYZ', id: '4', emp:{empLabel: 'Test14', empId: '17'}}
]
I am trying to club the emp data if my id is equal.
Expected Output:
[
{label: 'ABC', id: '1', emp:[{empLabel: 'Test1', empId: '12'}, {empLabel: 'Test2', empId: '13'}]},
{label: 'DEF', id: '2', emp:[{empLabel: 'Test11', empId: '14'}, {empLabel: 'Test12', empId: '15'}]},
{label: 'PQR', id: '3', emp:{empLabel: 'Test13', empId: '16'}},
{label: 'XYZ', id: '4', emp:{empLabel: 'Test14', empId: '17'}}
]
I have tried to do this by lodash but am not sure how to proceed after this. Any help would appreciate?
My Approach:
result = _.map(data, eachData => {
return _.chain(_.flatMap(eachData))
})
const _ = require("lodash")
let items = [
{ label: 'ABC', id: '1', emp: { empLabel: 'Test1', empId: '12' } },
{ label: 'ABC', id: '1', emp: { empLabel: 'Test2', empId: '13' } },
{ label: 'DEF', id: '2', emp: { empLabel: 'Test11', empId: '14' } },
{ label: 'DEF', id: '2', emp: { empLabel: 'Test12', empId: '15' } },
{ label: 'PQR', id: '3', emp: { empLabel: 'Test13', empId: '16' } },
{ label: 'XYZ', id: '4', emp: { empLabel: 'Test14', empId: '17' } }
]
var result = _(items)
.groupBy('id')
.map(function(items, label) {
return {
label: label,
emp: _.map(items, 'emp')
};
}).value();
console.log("result -> ", result)
This works, unless you are specifically trying to use lodash:
const result = data.reduce((acc, val) => {
const existingGroup = acc.find((group) => val.id === group.id);
if(!!existingGroup) {
if(existingGroup.emp && Array.isArray(existingGroup.emp)) {
existingGroup.emp = [...existingGroup.emp, val.emp];
} else {
existingGroup.emp = [existingGroup.emp, val.emp]
}
} else {
acc = [...acc, val];
}
return acc;
},[]);
console.log(result);
Try using array.filter(). Do something like
ar = []
let newarr = []
data.map(x => if (ar.indexOf(x)===-1) {newarr.push(x); at.push(x.id))
newArr is now your array.