Sorting nested Objects inside each other

Question

I am having a hard time about inner sorting of nested objects. For example I have nested array object like below.

[
  {
    "project_id": "1155091124014397",
    "completed": [
       {
          "task_due_date": "2020-06-01",      
       },
       {
          "task_due_date": "2020-20-01",      
       },
       {
          "task_due_date": "2020-02-01",      
       },
    ],
  },
  {
    "project_id": "1155091124012597",
    "completed": [
       {
          "task_due_date": "2020-22-01",      
       },
       {
          "task_due_date": "2020-05-01",      
       },
       {
          "task_due_date": "2020-01-01",      
       },
    ],
  },
]

So I am trying to sort each completed nested Array Object inside. But not to sure how to handle this. And tried something like below.

let sorted = array.map(element => {
   let nested = _.orderBy(element.completed, 'task_due_date');
   return nested
});

return sorted

But not worked out.

expected results is

[
  {
    "project_id": "1155091124014397",
    "completed": [
       {
          "task_due_date": "2020-02-01",      
       },
       {
          "task_due_date": "2020-06-01",      
       },
       {
          "task_due_date": "2020-20-01",      
       },
    ],
  },
  {
    "project_id": "1155091124012597",
    "completed": [
       {
          "task_due_date": "2020-01-01",      
       },
       {
          "task_due_date": "2020-05-01",      
       },
       {
          "task_due_date": "2020-22-01",      
       },
    ],
  },
]

Dates are sorted.

Change approach then and use a loop (for loop, foreach etc) and sort the completed property array in place — charlietfl
– charlietfl, Commented Jun 3, 2020 at 2:11

awarrier99 · Accepted Answer · 2020-06-03 02:29:27Z

2

First, you need to convert your date strings to date objects, and then you can sort based on those objects:

const arr = [
  {
    "project_id": "1155091124014397",
    "completed": [
       {
          "task_due_date": "2020-06-01",      
       },
       {
          "task_due_date": "2020-20-01",      
       },
       {
          "task_due_date": "2020-02-01",      
       },
    ],
  },
  {
    "project_id": "1155091124012597",
    "completed": [
       {
          "task_due_date": "2020-22-01",      
       },
       {
          "task_due_date": "2020-05-01",      
       },
       {
          "task_due_date": "2020-01-01",      
       },
    ],
  },
];

const toDate = dateStr => {
  const components = dateStr.split('-');
  const [year, date, month] = components;
  return new Date(`${year}-${month}-${date}`);
};

const sortByDate = (a, b) => {
  const aDate = toDate(a['task_due_date']);
  const bDate = toDate(b['task_due_date']);
  return aDate - bDate;
};

arr.forEach(el => {
  el.completed.sort(sortByDate);
});
console.log(arr);

edited Jun 3, 2020 at 2:29

answered Jun 3, 2020 at 2:14

awarrier99

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1 Comment

awarrier99 Over a year ago

@Tay no problem

Sven.hig · Accepted Answer · 2020-06-03 15:42:01Z

0

Date.prototype.formatdate=date=>{const compo=date.split('-'); return new Date(compo[0],compo[2],compo[1])}
      const sorttime = (a,b) => {
          date=new Date()
          const  x=date.formatdate(a.task_due_date)
         const  y=date.formatdate(b.task_due_date)
        return x-y}

      arr.filter(({...rest})=>({completed:rest.completed.sort(sorttime)}))

answered Jun 3, 2020 at 15:42

Sven.hig

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