Component is missing after drop a component on link

@colby wrote:

Component is missing after drop a component on link.

before drop

After drop

Our dropOntoLink function.

function dropOntoLink(e, obj) {
        var diagram = e.diagram;
        if (e.key == "") {
            var newnode = diagram.selection.first();
            var oldlink = obj.part;
            var fromnode = oldlink.fromNode;
            var tonode = oldlink.toNode;
            oldlink.toNode = newnode;
            oldlink.isNew = 1;
            var form_port = '';
            var to_port = '';
            var form_count = 0;
            var to_count = 0;
            var in_out_count = 0;
            var old_toport = '';
            var old_port_count = 0;
            to_port = oldlink.toPort;
            jQuery.each(all_connection_positions_arr[newnode.data.ComponentTypeNo], function(index, value) {
                if ((value.Direction == "In" || value.Direction == "InOut") && old_port_count == 0) {
                    oldlink.toPort = "PORT_" + value.ConnectorNo;
                    old_toport = "PORT_" + value.ConnectorNo;
                    old_port_count++;
                }
            });
            jQuery.each(all_connection_positions_arr[newnode.data.ComponentTypeNo], function(index, value) {
                if ((value.Direction == "Out" || value.Direction == "InOut") && form_count == 0) {
                    if(old_toport != "PORT_" + value.ConnectorNo){
                        form_port = "PORT_" + value.ConnectorNo;
                        form_count++;
                    }
                }
            });
           var link_data_arr = {
                                    from: newnode.data.key,
                                    to: tonode.data.key,
                                    fromPort: form_port,
                                    toPort: to_port,
                                    key: get_key(),
                                    text: 'Pipe',
                                    ComponentTypeNo: 3,
                                    isNew: 1,

                                };
            var blankcomponentdetails_value = blankcomponentdetails_arr[0];
            var keys_arr = Object.keys(blankcomponentdetails_value);

            for(var i=0; i<keys_arr.length; i++) {
                var data_key = keys_arr[i];
                var data_key_arr = data_key.split("__");
                if(data_key.indexOf("__") > 0){
                    if(data_key_arr[6] == 'ComponentNo'){
                    }else{
                        link_data_arr[data_key] = blankcomponentdetails_value[data_key];
                    }
                }
            }
            diagram.model.addLinkData(link_data_arr);
        } else {
            myDiagram.nodeTemplateMap.each(function(nodeType) {
                if (nodeType.key == 'Converge Tee') {
                    diagram.model.addNodeData(nodeType);
                }
            });
        }
    }

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