TreeGrid load on demand - passing node data to server?

265

coder posted over 8 years ago

I am trying to use TreeGrid's load on demand functionality as described here http://www.igniteui.com/tree-grid/load-on-demand

When the data source is set to a URL, it seems that my only option to pass some data to the server when a node is expanded is to rely on the autogenerated 'path' URL parameter, which lists a chain of row IDs up to the root, and also the node depth URL parameter. Is there any way to add any custom data to these calls besides what the widget does automatically? The data we are displaying is not homogeneous, so row IDs and depths are not sufficient when loading child rows.

Thank you!

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Offline Michael Peterson posted over 8 years ago

Hello,

Thank you for contacting Infragistics!

If you use the igTreeHierarchicalDataSource you can use a customEncodeURlFunc to setup a custom call:

http://help.infragistics.com/jQuery/2015.2/ig.treehierarchicaldatasource#options:settings.treeDS.customEncodeUrlFunc
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265

coder posted over 8 years ago in reply to Michael Peterson

Hi Mike,

Thank you for pointing that object out. But how do I use it with TreeGrid? I tried something like that, and no call to the server occurs:

                var ds = new $.ig.TreeHierarchicalDataSource({
                    treeDS: {
                        dataSourceUrl: '/Home/GetTreeDataPlain',
                        childDataKey: 'Employees'
                    }
                });

                $treegrid.igTreeGrid({
                    dataSource: ds,
                    ...
                });

                ds.dataBind();

Note that I got the same TreeGrid working with the following code:

 $treegrid.igTreeGrid({
                    dataSource: '/Home/GetTreeDataPlain',
                    childDataKey: 'Employees',
                    ...
 });

Thanks again!