column reorder event delay

[Bob]

Hi, I'm trying to save grid on most user actions but the column reorder event seems to fire before the actual columns are reordered.  To accommodate this oddness I've added setTimeout around the saving of grid options.  Is this delay a known bug?

function saveUserAdministrationGridState(arg)
{
    if (isLocalStorageAvailable())
    {
        // column reordering firing delayed, so we must delay our saving of options
        // hack source: http://stackoverflow.com/questions/21270748/kendo-grid-saving-state-in-columnreorder-event
        setTimeout(function () {
            localStorage[customGridOptionsLocalStorageKey] = kendo.stringify(grid.getOptions());
        }, 5);
    }
}

[Dimo]

Hello Bob,

The observed behavior is by design and the correct column order is provided in the columnReorder event arguments. You can use those, or use setTimeout with your current implementation.

http://docs.telerik.com/kendo-ui/api/javascript/ui/grid#events-columnReorder

It is theoretically possible to move the event triggering to occur after the DOM manipulation, so that it is easier for developers to store the Grid state, but this will represent a breaking change and we prefer to avoid this for the time being.

Regards,
Dimo
Telerik

 

 

[Bob]

So do you think 5ms for setTimeout is safe?  It works locally, but if a user is on a machine with low processing power, I'm guessing it could take longer.

Also, do you have a working example of the column order from arguments being used to save grid state?

[Dimo]

Hello Bob,

Actually, the timeout period doesn't matter at all in this case, due to the so-called event loop concept - delayed scripts wait for the currently executed synchronous scripts (such as column DOM reordering) before being executed.

Regards,
Dimo
Telerik

 

 

[Narendra]

Hi Dimo,

I am using the grid.options.columns to get the list of columns. But after the I am not seeing the changed columns order in the grid.options.columns(Still showing the old grid column order). Is there any way that I can get the new column order?

Thanks

[Dimo]

Hello Narendra,

grid.options.columns keeps the columns' initial state. For the current state, please use the dedicated and public API field:

http://docs.telerik.com/kendo-ui/api/javascript/ui/grid#fields-columns

Regards,
Dimo
Progress Telerik