CODEWITHSUNDEEP
javascriptarraysloopsjavascript-objects
Rataiczak24
Rataiczak24

Reputation: 1042

Adding items from array into objects within another array

I am currently looping through the data that I have, getting all values for a specific column and adding them to an array, then limiting it to only unique values.

I also have a reportSections array that needs to be dynamic based on how many items are currently in my date_group array. How can I loop through those arrays and add the values to the id and name objects within my reportSections array?

Ideally, I'm thinking there might contain some sort of for loop that can loop through the reportSections array and dynamically add the values inside the date_group and record_group arrays to the id and name objects, but not sure how that would work.

  var date_group = [];
  var record_date = [];
    var i;
    for (i = 0; i < data.length; i++) {
      date_group.push(data[i]['date group']);
      record_date.push(data[i]['record date']);
    }

    date_group = _.uniq(date_group);
    record_date = _.uniq(record_date);

  const reportSections = [
    {id: 'date_group1', name: 'record_date1'},
    {id: 'date_group2', name: 'record_date2'},
    {id: 'date_group3', name: 'record_date3'},
    {id: 'date_group4', name: 'record_date4'},
    {id: 'date_group5', name: 'record_date5'},
    {id: 'date_group6', name: 'record_date6'},
  ];

Upvotes: 0

Views: 89

Answers (1)

M A Salman
M A Salman

Reputation: 3820

Regarding making items unique im confused looking at your question but try this solution.

Use set for unique records

let data = [{
    "date group": "C",
    "record date": "13 Mar 20"
  },
  {
    "date group": "B",
    "record date": "11 Mar 20"
  },
  {
    "date group": "A",
    "record date": "11 Mar 20"
  },
  {
    "date group": "B",
    "record date": "12 Mar 20"
  },
  {
    "date group": "C",
    "record date": "11 Mar 20"


  }
]
let reportSections = [];
let dataGroups = new Set();
let recordDates = new Set();
data.forEach(item => {
  dataGroups.add(item['date group']);
  recordDates.add(item['record date'])
})
for (const [index, value] of [...dataGroups].entries())
  reportSections.push({
    id: value,
    name: [...recordDates][index]
  })
console.log(reportSections);
.as-console-wrapper {
  max-height: 100% !important;
  top: 0;
}

Upvotes: 1

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