Combine an array of objects and their properties. Remove object after combining

Question

I need to merge the objects together. The resource property is what determines if the objects can be merged. To determine where the hours property valu

Answer 1

The problem is you're relying on the adjacent record of each record. Instead, you could keep a tally of each member by their resource. Since resource is unique, you can use it as a property of an object that keeps the tally -- think of it like a key. Then you can add the number of hours in each record to the appropriate object.

Here's my attempt: http://codepen.io/anon/pen/bBYyPa

var members = [
{billable: true, hours: 15, name: "Joe Smith", resource: "00530000003mgYGAAY", totalBillableHours: 0, totalHours: 0, totalNonBillableHours: 0},
{billable: true, hours: 5, name: "Joe Smith", resource: "00530000003mgYGAAY", totalBillableHours: 0, totalHours: 0, totalNonBillableHours: 0},
{billable: false, hours: 5, name: "Joe Smith", resource: "00530000003mgYGAAY", totalBillableHours: 0, totalHours: 0, totalNonBillableHours: 0},
{billable: false, hours: 5, name: "Jan Smith", resource: "00530000003mgYTAAY", totalBillableHours: 0, totalHours: 0, totalNonBillableHours: 0},
{billable: true, hours: 12, name: "Jan Smith", resource: "00530000003mgYTAAY", totalBillableHours: 0, totalHours: 0, totalNonBillableHours: 0},
{billable: true, hours: 2, name: "Jam Smith", resource: "00530000003mgYTAAY", totalBillableHours: 0, totalHours: 0, totalNonBillableHours: 0}  
];

var membersObj = {};

for (i = 0; i < members.length; i++) {

  var member = members[i];
  if (!membersObj[member.resource]){
    membersObj[member.resource] = members[i];
  }

  if(member.billable){
    membersObj[member.resource].totalBillableHours += member.hours;
  } else {
    membersObj[member.resource].totalNonBillableHours += member.hours;
  }

  membersObj[member.resource].totalHours += member.hours;

}
console.log(membersObj);

Of course, this gives you back an object instead of an array, but that can be converted if necessary.

Here is the output:

{ 
'00530000003mgYGAAY': 
   { billable: true,
     hours: 15,
     name: 'Joe Smith',
     resource: '00530000003mgYGAAY',
     totalBillableHours: 20,
     totalHours: 25,
     totalNonBillableHours: 5 },
'00530000003mgYTAAY': 
   { billable: false,
     hours: 5,
     name: 'Jan Smith',
     resource: '00530000003mgYTAAY',
     totalBillableHours: 14,
     totalHours: 19,
     totalNonBillableHours: 5 } 
}