How can I set or change a value of a concrete cell programmatically? - slickgrid

Question

Using a pure array as data source (not a DateView) to initialize a SlickGrid, I want to change a value after grid creation on a specific row / column (a cell).
Here is the simple example, that can also be found as a working JSFiddle and I want for example to change the value of "Duration" on row 3 ("Task 2") from "5 days" to "7 days".
<div id="myGrid" style="width:400px;height:400px;"></div>
<script>
var grid;
var columns = [
{id: "title", name: "Title", field: "title"},
{id: "duration", name: "Duration", field: "duration"},
{id: "%", name: "% Complete", field: "percentComplete"},
{id: "start", name: "Start", field: "start"},
{id: "finish", name: "Finish", field: "finish"},
{id: "effort-driven", name: "Effort Driven", field: "effortDriven"}
];
var options = {
enableCellNavigation: true,
enableColumnReorder: false
};
$(function () {
var data = [];
for (var i = 0; i < 500; i++) {
data[i] = {
title: "Task " + i,
duration: "5 days",
percentComplete: Math.round(Math.random() * 100),
start: "01/01/2009",
finish: "01/05/2009",
effortDriven: (i % 5 == 0)
};
}
grid = new Slick.Grid("#myGrid", data, columns, options);
grid.setSelectionModel(new Slick.CellSelectionModel());
/* needed method */
grid.setCellValue(2, 1, "7 days");
/* or */
grid.setCellValue(2, "duration", "7 days");
})
</script>
It looks like a method like
grid.setCellValue(row, column, value);
does not exist.
Is there a way (or existing method I didn't found yet) to achieve this without using a DataView?

Answer 1

Just use
data[2].duration = "7 Days";
and then refresh the grid:
grid.invalidateAllRows();
grid.render();
The grid only has display related helper methods, although you can get the data with grid.getData(). Editors, if you use them, contain code to extract the value from a row (data[n]) and write it to the editor UI, and then go back the other way.