以编程方式选择行ag-grid + angular 2

Question

尝试在ag-grid中默认选择第一行.根据ag-grid文档,我应该可以使用NodeSelection Api(https://www.ag-grid.com/javascript-grid-selection/?framework=all#gsc.tab=0)来完成此操作.但我根本无法访问节点对象.HTML文件

<div class="pulldown panel panel-default">
          <div class="panel-heading">{{rulesSummaryTitle}}</div>
          <ag-grid-angular #agGrid   class="ag-fresh ag-bootstrap"
                           [gridOptions]="gridOptions"
                           [rowData]="rowData"
                           [columnDefs]="columnDefs"
                           [enableSorting]="true"
                           rowSelection="single"
                           [pagination]="true"
                           [suppressCellSelection]="true"
                           (gridReady)="onGridReady($event)"
                           (rowSelected)="onRowSelect($event)">
          </ag-grid-angular>
      </div>

我在"onGridReady"方法中调用节点选择api但错误输出错误消息"无法调用setSelected on undefined".

public onGridReady(event: any): void {
    event.api.sizeColumnsToFit();
    this.gridOptions.api.node.setSelected(true);
  }

Answer 1

对象node上没有属性gridOptions.api.你会想做更像这样的事情:

public onGridReady(event: any): void {
    event.api.sizeColumnsToFit();
    gridOptions.api.forEachNode(node=> node.rowIndex ? 0 : node.setSelected(true))
  }

这将检查数据中的每个节点并查看rowIndex是否为0,如果是,则使用节点对象设置所选属性

Answer 2

找到解决方案，问题是在从Observables填充行数据之前，调用了“ onGridReady”功能。因此，实际上没有选择语句可以选择的行。

import { Component } from '@angular/core';
import {Observable} from "rxjs/Observable";
export class Hero {
  id: number;
  name: string;
}

@Component({
  selector: 'my-app',
  template: `
    <ag-grid-angular style="width: 500px; height: 115px;" class="ag-fresh"
                 [rowData]="rowData"
                 (gridReady)="onReady($event)"
                 [columnDefs]="columnDefs">
</ag-grid-angular>
<ag-grid-angular style="width: 500px; height: 115px;" class="ag-fresh"
                 [rowData]="rowData2"
                 (gridReady)="onReady($event)"
                 [columnDefs]="columnDefs">
</ag-grid-angular>
<ag-grid-angular style="width: 500px; height: 115px;" class="ag-fresh"
                 [gridOptions]="gridOptions"
                 [rowData]="rowData3"
                 (gridReady)="onReady($event)"
                 (rowDataChanged)="onRowDataChanged()"
                 [columnDefs]="columnDefs">
</ag-grid-angular>
    `
})
export class AppComponent {
    columnDefs;
    rowData;
    rowData2;
    rowData3;

    constructor() {
      this.gridOptions = {
      rowData: this.rowData3
    };
      console.log("in here");
      console.log("in here");
      console.log("in here");
        this.columnDefs = [
            {headerName: "Make", field: "make"},
            {headerName: "Model", field: "model"},
            {headerName: "Price", field: "price"}
        ];

        this.rowData = [
            {make: "Toyota", model: "Celica", price: 35000},
            {make: "Ford", model: "Mondeo", price: 32000},
            {make: "Porsche", model: "Boxter", price: 72000}
        ]

        let val = [
      {make: "Toyota", model: "Celica", price: 35000},
      {make: "Ford", model: "Mondeo", price: 32000},
      {make: "Porsche", model: "Boxter", price: 72000}
    ];


    let res : Observable<any> = Observable.create(observer => {
      setTimeout(()=>{
        observer.next(val);
      },1);
    });
    res.subscribe(
      resposne => {
        this.rowData2 = resposne;
      });

      let res1 : Observable<any> = Observable.create(observer => {
      setTimeout(()=>{
        observer.next(val);
      },2000);
    });
    res1.subscribe(
      resposne => {
        this.rowData3 = resposne;
      });


    }
       /**
   * Select the first row as default...
   */
  public onRowDataChanged(): void {
    this.gridOptions.api.forEachNode(node => node.rowIndex ? 0 : node.setSelected(true));
  }


    private onReady(params) {
        params.api.sizeColumnsToFit();
       params.api.forEachNode(node => node.rowIndex ? 0 : node.setSelected(true));
    }
}

https://plnkr.co/edit/PSKnSjAo6omDAo5bjm1J。

添加了带有三个Ag-grid的插件。第一个网格具有预定义的行数据值，第二个网格具有从Observables填充的行数据，但是延迟非常短，第三个网格具有从具有更高延迟的可观察的对象填充的行数据值。在第一个和第二个“ onGridReady”函数被调用并且第一行被选择的情况下，但是在第三个网格的情况下，我们必须在“ rowDataChanged”事件上提供选择行语句以供选择的行使用。