Dgrid - rowIndex in OnDemandGrid - dojo

Question

I am using OnDemandGrid virtuall scrolling with JSONRest store.
require([
"dojo/request",
"dojo/store/Memory",
"dgrid/OnDemandGrid",
"dojo/store/JsonRest"
], function (request, Memory, OnDemandGrid,JsonRest) {
var jsonstore = new JsonRest({target: url , idProperty: "id"});
// Create an instance of OnDemandGrid referencing the store
var grid = new OnDemandGrid({
store: jsonstore,
columns: Layout,
minRowsPerPage : 40,
maxRowsPerPage : 40,
loadingMessage: "Loading data...",
noDataMessage: "No results found."
}, "grid");
grid.startup();
});
I dont know how to get the rowIndex of the cell.
Can someone tell me how to find the row index?

Answer 1

You may find what you're looking for by using Selection mixin provided by dGrid. Using Selection, you can define your grid like this:
grid = new (declare([OnDemandGrid, Selection]))({
store: Observable(Memory({ // replace with your store of choice
idProperty: 'id'
})),
columns: { /* your columns layout */ },
noDataMessage: 'No results found.',
loadingMessage: 'Loading data...'
});
grid.startup();
In your columns object, you can define a column that uses a function called renderCell that looks like this:
renderCell: function (object, value, node, options) {
// Object is the row; i.e., object's properties are the column names
// value is the value for this cell
// node is the DOM node of this cell
// Not sure what 'options' refers to
}
When a row is selected, you can retrieve the row by using the grid.selection property, which is an object that contains key/value pairs where the the ID's (based on idProperty) are the keys. The value for each key contains a boolean that indicates whether or not that particular row is selected. So, to get each selected row, you could do something like:
for (selectedId in selection) {
if (selection.hasOwnProperty(selectedId) && selection[selectedId] === true) {
var selectedRow = grid.row(selection[selectedId];
... // and so on...
}
}
None of this specifically gives you the row index, but you may be able to figure it out from here using your browser's Development Tools (e.g., Firebug for Firefox, etc).