Drag and Drop the Record from another component to Gantt

17 Feb 20224 minutes to read

In Gantt, it is possible to drag a record from another component and drop it in Gantt chart with updating the Gantt record. Here, dragging an item from TreeView component to Gantt and that item is updated as a resource for the Gantt record, we can achieve this, by using nodeDragStop event of TreeView control.

@(Html.EJS().Gantt("Gantt").DataSource((IEnumerable<object>)ViewBag.DataSource).Height("280px").AllowSelection(true)
                    .TaskFields(ts => ts.Id("TaskId").Name("TaskName").StartDate("StartDate").EndDate("EndDate").Duration("Duration").Progress("Progress")
                    .Dependency("Predecessor").Child("SubTasks").ResourceInfo("Resources"))
    .EditSettings(es => es.AllowEditing(true))
    .Resources((IEnumerable<object>)ViewBag.Resources)
    .ResourceFields(rf => rf.Id("ResourceId").Name("ResourceName"))
    .LabelSettings(ls => ls.RightLabel("Resources"))
    .Render()
    )
@(Html.EJS().TreeView("treedata").AllowDragAndDrop(true).Fields(field =>
    field.Id("ResourceId").Text("ResourceName").DataSource(ViewBag.Resources))
    .NodeDragStop("nodeDragStop")
    .Render()
    )
<script>
    function nodeDragStop(args) {
        args.cancel = true;
        var ganttChart = document.getElementById('Gantt').ej2_instances[0];
        var chartEle = ej.base.closest(args.target, '.e-chart-row');
        var gridEle = ej.base.closest(args.target, '.e-row');
        if (gridEle) {
            var index = ganttChart.treeGrid.getRows().indexOf(gridEle);
            ganttChart.selectRow(index);
        }
        if(chartEle){
            var index = chartEle.rowIndex;
            ganttChart.selectRow(index);
        }
        var record = args.draggedNodeData;
        var selectedData = ganttChart.flatData[ganttChart.selectedRowIndex];
        var selectedDataResource = selectedData.taskData.Resources;
        var resources = [];
        if (selectedDataResource) {
            for (var i = 0; i < selectedDataResource.length; i++) {
                resources.push(selectedDataResource[i].ResourceId);
            }
        }
        resources.push(parseInt(record.id));
        if (chartEle || gridEle) {
            var data = {
                TaskId: selectedData.taskData.TaskId,
                Resources: resources
            };
            ganttChart.updateRecordByID(data);
        }
    }
</script>
public IActionResult Index()
{
    ViewBag.DataSource = GanttData.ProjectNewData();
    ViewBag.projectResources = projectResources();
    return View();
}

The following screenshot shows dropping record from another component in to Gantt, and Rose Fuller is added as resource for the task Develop floor plan estimation.

Dropping Record