Sort object by another object value inside - actionscript-3

Question

Here some complication sorting in my application.
Now i have data object is like following(called pCList):
Object[0]:
Id: 1
comp: Test
med: xyz
condition: valueObject.Condition
Object[1]:
Id: 2
comp: Test1
med: pqr
condition: valueObject.Condition
Object[2]:
Id: 3
comp: Test
med: abc
condition: valueObject.Condition
condition VO Have data like:
condition data1:
conId: 001
cond: abcds
condition data2:
conId: 001
cond: trdfd
condition data3:
conId: 001
cond: dsdsds
For normal sorting i will do as following way;
var sort:ISort = new Sort();
var sortField:ISortField = new SortField("med");
sort.fields = [sortField];
if(pCList != null)
{
pCList.sort = sort;
pCList.refresh();
}
In which pcList is sort by med.
But now, I want to sort by condition.cond
like first come which have cond value abcds then dsdsds then trdfd and so on...
I Have tried it using:
var sort:ISort = new Sort();
var sortField:ISortField = new SortField("condition.cond");
sort.fields = [sortField];
But not succeed. Any help is greatly appreciated.

Answer 1

ISort has a property compareFunction, that can be used for custom sorting. See example below.
var sort:ISort = new Sort();
sort.compareFunction = function(a:Object, b:Object, fields:Array = null):int {
var conditionA:String = a.Condition.cond;
var conditionB:String = b.Condition.cond;
if (conditionA < conditionB) {
return -1;
} else if (conditionA > conditionB) {
return 1;
} else {
return 0;
}
};