JSON re-grouping with for each method in AngularJs - angularjs

Question

I am new in angular and i want to re-group a JSON. Is it possible to do with angular.forEach() method?
[
{
"doc":{
"Title":"Main",
"name":"Ajith",
"Day":"03",
"count":3
}
},
{
"doc":{
"Title":"starters",
"name":"Saji",
"Day":"01",
"count":39
}
},
{
"doc":{
"Title":"desert",
"name":"Sajeeb",
"Day":"02",
"count":63
}
},
{
"doc":{
"Title":"Main",
"name":"Suith",
"Day":"03",
"count":3
}
},
{
"doc":{
"Title":"starters",
"name":"Manu",
"Day":"01",
"count":9
}
}
]
I want the output should be like following.
{
"order":[
{
"Day":"01",
"Title":"starters",
"items":[
{
"name":"Saji",
"count":39
},
{
"name":"Manu",
"count":9
}
]
},
{
"Day":"02",
"Title":"desert",
"items":[
{
"name":"Sajeeb",
"count":63
}
]
},
{
"Day":"03",
"Title":"Main",
"items":[
{
"name":"Ajith",
"count":3
},
{
"name":"Suith",
"count":3
}
]
}
]
}
To regroup with angular.forEach() method.
Please help. Thanks.

Answer 1

https://jsfiddle.net/9fwtm0a0/4/
var days = [];
arr.forEach(function(d) {
var day = parseInt(d.doc.Day);
var item = { name: d.doc.name, count: d.doc.count };
if (days[day])
days[day].items.push(item);
else
days[day] = { Day: '0' + day, Title: d.doc.Title, items: item]};
});
days.sort(function (x, y) {
return parseInt(x.Day) > parseInt(y.Day);
});
var eventsinOrder = { order: days };
You don't really need the Angular forEach but you can easily substitute it in:
var days = [];
angular.forEach(arr, function (val, key) {
var day = parseInt(val.doc.Day);
var item = { name: val.doc.name, count: val.doc.count };
if (days[day])
days[day].items.push(item);
else
days[day] = { Day: '0' + day, Title: val.doc.Title, items: [item]};
});
days.sort(function (x, y) {
return parseInt(x.Day) > parseInt(y.Day);
});
var eventsinOrder = { order: days };
Either way you go you will still need to make use of the sort function (or any equivalent) to perform the sorting while you're building this resultant object.