Angularjs ui grid with grouping column sequence is getting jumbled up - angularjs

Question

I am using AngularJs ui grid with grouping. The table is displaying fine but the problem I am facing is that the months sequence in the table is getting jumbled up. Please find my Plunker. In the table the Months are appearing in the jumbled up sequence 11-14, 05-15, 04-15, ... 02-15. But I need it in the sequence of 11-14, 12-14, 01-15, 02-15, 03-15, 04-15, 05-15. Can any one help me to fix it?
I am using the following for to get colDefs:
$scope.getColumnDefsForUiGrid = function(columns) {
var colDef = [];
colDef.push({
name: 'mode',
grouping: {
groupPriority: 0
},
displayName: 'Type',
enableCellEdit: false,
width: '5%'
});
colDef.push({
name: 'service',
displayName: 'Catg',
enableCellEdit: false,
width: '5%'
});
angular.forEach(columns, function(value, key) {
colDef.push({
name: key,
displayName: value,
enableCellEdit: true,
aggregationType: uiGridConstants.aggregationTypes.sum,
width: '5%'
})
});
return colDef;
};

Answer 1

Here is a workaround for your problem
you can see it working on this plunker
$scope.getColumnDefsForUiGrid = function( columns ){
var colDef = [];
colDef.push({name: 'mode', grouping: { groupPriority: 0 }, displayName: 'Type', enableCellEdit: false, width: '5%'});
colDef.push({name: 'service', displayName: 'Catg', enableCellEdit: false, width: '5%'});
//I split the monthColumns into an other array
var monthCol = [];
angular.forEach(columns, function( value, key ) {
monthCol.push({name: key, displayName: value, enableCellEdit: true, aggregationType : uiGridConstants.aggregationTypes.sum, width: '5%' })
});
//I sort this array using a custom function
monthCol.sort(function(a,b){
a = a.displayName.split("-");
b = b.displayName.split("-");
if(a[1] < b[1]){
return -1;
}else if (a[1] > b[1]){
return 1;
}else {
if(a[0] < b[0]){
return -1;
}else{
return 1;
}
}
});
//I concat the two array
return colDef.concat(monthCol);
};