ag网格外部过滤器使用angular2

Question

我想用angular2在ag-grid上实现外部过滤。

在github上的ag-grid示例似乎没有实现外部过滤器，类似的问题尚未得到回答。有没有一种方法可以在agg -grid中使用angular2实现外部过滤器?

我有以下内容:

模板:

<input (keyup)="updateFilters($event)" name="filterAgreementNumber" #filterAgreementNumber/>
<ag-grid-ng2 #agGrid
         style="width: 100%;"
         [style.height.px]="height"
         class="ag-fresh"
         [gridOptions]="gridOptions"
         [rowData]="promises"
         (window:resize)="onResize($event)">

组件:

export class PromisesListComponent {
    private gridOptions: GridOptions;
    private promises: Promise[];
    filterAgreementNumber = '';
    constructor(private promisesService: PromisesService) {
        this.gridOptions = {
            rowData: this.promises,
            columnDefs: this.createColumnDefs(),
            enableColResize: true,
            enableSorting: true,
            enableFilter: true,
            isExternalFilterPresent: this.externalFilterPresent,
            doesExternalFilterPass: this.externalFilterPass,            
    }
    updateFilters(event: any) {
        this.filterAgreementNumber = event.target.value; //correctly assigns property
        this.gridOptions.api.onFilterChanged();
    }
    externalFilterPass(node: any) {
        console.log(this.getFilterAgreementNumber); //undefined
        if (this.filterAgreementNumber && this.filterAgreementNumber.length > 0)
            if (node.data.AgreementCode.indexOf(this.filterAgreementNumber) === -1)
            return false;
        return true;
    }
}

我遇到的问题是，externalFilterPass中的this指的是ag-grid节点，我无法访问类属性。

Answer 1

在构造函数中，而不是

this.gridOptions = {
   ...
   isExternalFilterPresent: this.externalFilterPresent,
   doesExternalFilterPass: this.externalFilterPass
}

试

this.gridOptions = {
   ...
   isExternalFilterPresent: this.externalFilterPresent.bind(this),
   doesExternalFilterPass: this.externalFilterPass.bind(this)
}

现在组件上下文将可以从ag-grid方法中访问，并且this将是您所期望的。

来源:https://stackoverflow.com/a/41965934/6432429

Answer 2

你是否在你的类上面添加了@Injectable() ?

也:像这样重写gridOptions函数:

        ..., doesExternalFilterPass: (node) => { return this.doesExternalFilterPass(this, node); }, ...

和在你的类中使用

private doesExternalFilterPass(gcs, node): boolean {
    if (<GridRowStatus>gcs.gridActionsService.filter) {
        console.log(gcs.gridActionsService.filter);
        console.log(node.data);
        return gcs.rowStatusService.contains(node.data, [gcs.gridActionsService.filter]);
    } else {
        return true;
    }
}