【发布时间】:2026-02-15 11:55:01
【问题描述】:
我正在制作一个可重用的 Angular 数据表组件,您可以在其中按列过滤。现在,我的方法有效,但我担心这不是 Angular 的最佳实践。除了在单击输入时将该特定列添加到“selectColInput”,然后在过滤器管道中使用它之外,还有另一种过滤单个列的方法吗?
数据表.component.html
<table>
<thead>
<tr>
<th *ngFor="let col of cols">
{{col.header}}
<input type="text"
[(ngModel)]=fields[col.value]
(click)="selectColInput(col.value)"/>
</th>
</tr>
</thead>
<tbody *ngFor="let row of data | filter: fields:selectedInput">
<tr>
<td *ngFor="let col of cols">{{row[col.value]}}</td>
</tr>
</tbody>
</table>
data-table.component.ts
import { ColumnsComponent } from './../columns/columns.component';
import { Component, Input } from '@angular/core';
import { FilterPipe } from './filter.pipe';
@Component({
selector: 'app-data-table',
templateUrl: './data-table.component.html',
styleUrls: ['./data-table.component.css']
})
export class DataTableComponent {
@Input() data
cols: ColumnsComponent[] = []
selectedInput: string = ''
fields: any = {}
selectColInput(col) {
this.selectedInput = col
}
addColumn(column) {
this.cols.push(column)
}
}
filter.pipe.ts
import { Pipe, PipeTransform } from '@angular/core';
@Pipe({
name: 'filter',
pure: false
})
export class FilterPipe implements PipeTransform {
transform(data: any, fields: any, selectedInput: any): any {
if(!data) return;
return data.filter( row => {
if(row[selectedInput] !== null && row[selectedInput] && fields[selectedInput]){
return row[selectedInput].toLowerCase().includes(fields[selectedInput].toLowerCase())
}
return true
})
}
}
【问题讨论】:
标签: javascript angular