Is there a way to change the order that slickgrid displays grouped rows? (Asc, vs Desc)

Question

Is there a function I can set to a column that when the grid is grouped by that column it will know to sort the getter in a certain order, either ascending or descending for now.

Answer 1

There is a comparer property of the grouping settings object.

Here's a snippet from example-grouping.html:

function groupByDurationOrderByCount(aggregateCollapsed) {
  dataView.setGrouping({
    getter: "duration",
    formatter: function (g) {
      return "Duration:  " + g.value + "  <span style='color:green'>(" + g.count + " items)</span>";
    },
    comparer: function (a, b) {
      return a.count - b.count;
    },
    aggregators: [
      new Slick.Data.Aggregators.Avg("percentComplete"),
      new Slick.Data.Aggregators.Sum("cost")
    ],
    aggregateCollapsed: aggregateCollapsed,
    lazyTotalsCalculation: true
  });
}

The comparer is passed to the javascript sort method. See here for more info about how to construct the comparer function.