ag-grid-angular:错误类型错误:rowData.forEach 不是函数

Question

试图在我的项目中加入 ag-grid-angular。我已经成功地让它通过过滤和排序处理静态数据。

我现在无法使用异步动态数据进行设置。

<ag-grid-angular 
style="width: 1100px; height: 1000px;" 
class="ag-theme-balham" 
[enableSorting]="true"
[enableFilter]="true" 
id ="mygrid"
[animateRows]="true"
[rowData]="rowss | async"
[columnDefs]="columnDefs"
>	
</ag-grid-angular>

在 component.ts 中:

public rowss: any = null;

this.rowss = this.Service.getReport(this.model)

我现在已经静态设置了列

columnDefs = [
        {headerName: 'Make', field: 'make' },
        {headerName: 'Model', field: 'model' },
        {headerName: 'Price', field: 'price'}
    ];

在 Service.ts 中:

getReport( request: ReportModel ) {
            return this.http.get( this.URL + super.jsonToQueryParam( request ) ).map(( response: Response ) => response.json() );
        }

我收到此错误消息:

enter image description here

ng:///ProdCtnReportModule/ProdCtnReportComponent.ngfactory.js:100 ERROR TypeError: rowData.forEach is not a function
    at ClientSideNodeManager.recursiveFunction (webpack-internal:///./node_modules/ag-grid/dist/lib/rowModels/clientSide/clientSideNodeManager.js:193)
    at ClientSideNodeManager.setRowData (webpack-internal:///./node_modules/ag-grid/dist/lib/rowModels/clientSide/clientSideNodeManager.js:65)
    at ClientSideRowModel.setRowData (webpack-internal:///./node_modules/ag-grid/dist/lib/rowModels/clientSide/clientSideRowModel.js:483)
    at GridApi.setRowData (webpack-internal:///./node_modules/ag-grid/dist/lib/gridApi.js:156)
    at Function.ComponentUtil.processOnChange (webpack-internal:///./node_modules/ag-grid/dist/lib/components/componentUtil.js:120)
    at AgGridNg2.ngOnChanges (webpack-internal:///./node_modules/ag-grid-angular/dist/agGridNg2.js:363)
    at checkAndUpdateDirectiveInline (webpack-internal:///./node_modules/@angular/core/esm5/core.js:12623)
    at checkAndUpdateNodeInline (webpack-internal:///./node_modules/@angular/core/esm5/core.js:14151)
    at checkAndUpdateNode (webpack-internal:///./node_modules/@angular/core/esm5/core.js:14094)
    at debugCheckAndUpdateNode (webpack-internal:///./node_modules/@angular/core/esm5/core.js:14987)

我们从 API 调用中得到的数据与我静态设置时使用的数据相同。返回结果是请求的数组。
请建议需要做什么才能使其发挥作用。

Answer 1

这里的错误是您试图将 Observable 分配为 ag-grid 的数据。.map()返回一个 observable，您应该订阅它并向 ag-grid 提供数据。

像这样的东西——

const rowss$ = this.Service.getReport(this.model);
rowss$.subscribe(rowData => {
  params.api.setRowData(rowData);
});

请记住，此错误 -

rowData.forEach is not a function

是一个很好的指标，表明您的 rowData 不是数组。

更多关于 map 与订阅 here