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       
(Showing Draft Content)

表格绑定插入列时更新数据透视表

问题:如何在表格绑定的数据源动态插入列时更新对应的数据透视表


背景:

很多应用数据透视表的用户会遇到这样要给问题,数据透视表引用了表格区域,并且表格区域可能会新增一些列,这个表格是通过数据绑定来实现的。这个时候就需要分别更新表格的数据源以及数据透视表。

解决办法:

对于这样一个背景,我们可以分成两个部分来讨论。分别是给表格绑定新增表格列以及更新数据透视表及其面板。

第一个部分,表格绑定新增表格列。首先还是比较常规的部分,进行表格绑定。

image

绑定完成之后,增加一个数据透视表。

image

实现之后我们可以看到带有绑定数据源的table以及一个数据透视表

image

image

接下来执行插入列的操作,我们可以通过表格的insertColumns接口来实现表格新增列,需要注意第三个参数,是一个布尔值,表示在指定列索引的前面插入还是后面插入。

table.insertColumns(2, 1, true);

插入完成之后,我们可以更新数据源或者我们直接返回的就是一个带有多一个cost属性的数据源也是可以的。因为表格绑定会根据绑定路径与数据源对应上,如果没有对应的,那么在绑定之后不会显示出来。

image

我们处理多出来的列的方法就是new一个TableColumn,并为其指定name以及绑定路径,然后将其添加到我们前面绑定时所构建的tableColumns数组中。最后再通过setDataSouce将新的数据源进行绑定。

var tableColumnNew = new spreadNS.Tables.TableColumn();
tableColumnNew.name("cost");
tableColumnNew.dataField("cost");
tableColumns.push(tableColumnNew);

table.bindColumns(tableColumns);
table.bindingPath("sales");
source = new GC.Spread.Sheets.Bindings.CellBindingSource(newdata);
sheet.setDataSource(source);

以上是实现了table绑定时动态添加列。

table数据源更新了,透视表也需要进行同步更新。我们可以通过updateSource更新透视表的数据源,然后通过add方法为透视表的值字段加上一个cost字段。

myPivotTable.updateSource();
myPivotTable.add(
  "cost",
  "Cost",
  GC.Spread.Pivot.PivotTableFieldType.valueField
);

最终的效果就是表格中多了一列,并且数据透视表也做了更新

image

image


详细代码可以参考附件Demo:test.html

作者: GrapeCity China | 审核:RichardMa | 更新时间:2023.12.10