Thingworx甘特图错误为"TypeError: Cannot read property 'ActualDataRows' of undefined"

Question

我正在使用PTC Marketplace的甘特图扩展。当我配置并运行mashup时，它给出的错误是"TypeError:无法在调整大小时读取未定义的属性‘ActualDataRows’"。(请参阅以下代码和随附的图像文件(。由于thisWidget.lastData未定义，因此this.resize函数引发错误。由于我是JavaScript的新手，我无法解决这个错误。你们能帮帮我吗？

感谢

(function () {
TW.Runtime.Widgets.ganttChart = function () {
var thisWidget = this; 
var currentlySelectedRow = undefined;
this.runtimeProperties = function () {
return {
'needsDataLoadingAndError': true,
'supportsAutoResize': true,
'propertyAttributes': {
}
};
};
this.renderHtml = function () {
if (this.properties.ResponsiveLayout === true ) {
widgetWidth = '100%';
widgetHeight = '100%';
} else {
widgetWidth = this.getProperty("Width");
widgetHeight = this.getProperty("Height");
}
var html = '<div class="widget-content widget-ganttChart"><div id = "chart_div" width=' + widgetWidth + ' height=' + widgetHeight + '> </div></div>';
return html;
};

this.loadChart = function (rows, taskId, taskName, startDate, endDate, resource, relationships, duration, percentage) {
google.charts.load('current', {'packages':['gantt']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('string', 'Resource');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
var trackStyle = TW.getStyleFromStyleDefinition(thisWidget.getProperty('TrackStyle', 'DefaultGanttTrackStyle'));
var altTrackStyle = TW.getStyleFromStyleDefinition(thisWidget.getProperty('AlternativeTrackStyle', 'DefaultAlternativeGanttTrackStyle'));
var arrowStyle = TW.getStyleFromStyleDefinition(thisWidget.getProperty('ArrowStyle', 'DefaultGanttArrowStyle'));
var trackFill = trackStyle.backgroundColor; 
var altTrackFill = altTrackStyle.backgroundColor;
var arrowColor = arrowStyle.lineColor; 
var arrowWidth = arrowStyle.lineThickness;
for (var i = 0; i < rows.length; i++) {
var row = rows[i];
data.addRows([
[row[taskId], row[taskName], row[resource],
new Date(row[startDate]), new Date(row[endDate]), row[duration], row[percentage], row[relationships]]
]);
}
var barHeight = thisWidget.getProperty('ItemHeight');
var chartHeight = rows.length *  barHeight + 50; 
var itemHeight = barHeight - 5;
var cornerRadius = thisWidget.getProperty('BarCornerRadius');
var percentEnabled = thisWidget.getProperty('ShowPercentCompletion');
var arrowRadius = thisWidget.getProperty('ArrowRadius');
var arrowAngle = thisWidget.getProperty('ArrowAngle');
var options = {
width: "100%",
height: chartHeight,
gantt: {
barHeight: itemHeight,
trackHeight: barHeight, 
barCornerRadius: cornerRadius,
arrow: { angle:arrowAngle, length: 5, spaceAfter: 5, radius: arrowRadius, color: arrowColor, width: arrowWidth},
innerGridTrack: {fill: trackFill },
innerGridDarkTrack: {fill: altTrackFill},
percentEnabled : percentEnabled                     
}
};
var chart = new google.visualization.Gantt(document.getElementById('chart_div'));
chart.draw(data, options);
google.visualization.events.addListener(chart, 'select', function(e) {
var selection = chart.getSelection(); 
if (selection[0] != undefined && selection[0] != null) 
thisWidget.handleRowSelection (selection[0].row);
});
}
};
this.afterRender = function () { };

this.handleSelectionUpdate = function (propertyName, selectedRows, selectedRowIndices) {
var domElementId = this.jqElementId;
var widgetElement = this.jqElement;
var widgetProperties = this.properties;
if (propertyName == "Data") {
var widgetProperties = this.properties;
var idField = widgetProperties['TaskID'];
thisWidget.ignoreSelectionEvent = true;
var nSelectedRows = selectedRows.length;
if (nSelectedRows > 0) {
for (var x = 0; x < nSelectedRows; x++) {
if (selectedRows[x]._isSelected === true) {
thisWidget.handleRowSelection(selectedRows[x]["_row_"]);
thisWidget.ignoreSelectionEvent = false;
break;
}
}
} else
thisWidget.handleRowSelection(undefined);
thisWidget.ignoreSelectionEvent = false;
}
};
this.handleRowSelection = function (selectedRowNo) {
if (selectedRowNo !== undefined) {
var selectedRows = [selectedRowNo];
if (!thisWidget.ignoreSelectionEvent) {
thisWidget.updateSelection('Data', selectedRows);
}
}
thisWidget.currentlySelectedRow = selectedRowNo;
};
this.handleItemClick = function (d) {
thisWidget.handleRowSelection(d["_row_"]);
};
this.assignRowNumbers = function (rows) {
var rowid;
for (rowid in rows) {
var row = rows[rowid];
row["_row_"] = rowid;
}
};
this.updateProperty = function (updatePropertyInfo) {
var widgetProperties = this.properties;
if (updatePropertyInfo.TargetProperty === "Data") {
thisWidget.lastData = updatePropertyInfo;
var rows = updatePropertyInfo.ActualDataRows;
this.assignRowNumbers(rows);
var taskName = widgetProperties['TaskName'];
var taskId = widgetProperties['TaskID'];
var startDate = widgetProperties['StartDate'];
var endDate = widgetProperties['EndDate'];
var resource = widgetProperties['Resource'];
var relationships = widgetProperties['Relationships'];
var duration = widgetProperties['Duration'];
var percentage = widgetProperties['Percentage'];
this.loadChart(rows, taskId, taskName, startDate, endDate, resource, relationships, duration, percentage);
var selectedRowIndices = updatePropertyInfo.SelectedRowIndices;
if (selectedRowIndices !== undefined) {
if (selectedRowIndices.length > 0) {
var selectedRows = new Array();
selectedRows.push(rows[selectedRowIndices[0]]);
setTimeout(function () {
thisWidget.handleSelectionUpdate("Data", selectedRows, selectedRowIndices);
}, 100);
} else {
setTimeout(function () {
thisWidget.handleSelectionUpdate("Data", [], []);
}, 100);
}
} else {
setTimeout(function () {
thisWidget.handleSelectionUpdate("Data", [], []);
}, 100);
}
if (this.SelectedValuePending !== undefined) {
this.selectItem(this.SelectedValuePending);
this.SelectedValuePending = undefined;
}
} else if (updatePropertyInfo.TargetProperty === "SelectedValue") {
var selectedItem = updatePropertyInfo.SinglePropertyValue;
var dataPropertyInfo = thisWidget.lastData;
if (dataPropertyInfo != undefined) {
this.selectItem(selectedItem);
} else {
this.SelectedValuePending = selectedItem;
}
}
};
this.beforeDestroy = function () {
};
this.resize =  function () {
var taskName = thisWidget.getProperty('TaskName');
var taskId = thisWidget.getProperty('TaskID');
var startDate = thisWidget.getProperty('StartDate');
var endDate = thisWidget.getProperty('EndDate');
var resource = thisWidget.getProperty('Resource');
var relationships = thisWidget.getProperty('Relationships');
var duration = thisWidget.getProperty('Duration');
var itemHeight = thisWidget.getProperty("ItemHeight");
var percentage = thisWidget.getProperty("Percentage");
var rows = thisWidget.lastData.ActualDataRows; //here throwing error
thisWidget.loadChart(rows, taskId, taskName, startDate, endDate, resource, relationships, duration, percentage); 
};
window.addEventListener("resize", this.resize);
};} ());

Answer 1

这个问题是因为我没有将触发器事件分配给用于甘特图的数据服务。在这种情况下，将"MashupLoaded"触发器事件分配给数据服务。

感谢