如何在特定列的角材料数据表中进行过滤 [英] How to do filter in angular material data table for specific column
本文介绍了如何在特定列的角材料数据表中进行过滤的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试角度材料数据表.
i am trying angular material data table.
我们知道默认情况下每行都会发生过滤.
As we know filtering happened for each row by default.
如果我要过滤特定于列的内容,那该怎么办?
If i want to filter column specific, then what should i do?
我是否必须编写一种方法来获取所有记录,然后对其进行迭代并比较特定的列?
Should i have to write method for getting all records, then iterate over it and compare specific column?
component.ts
component.ts
ngOnInit() {
this.service.getUser().subscribe( results => {
if(!results){
return;
}
console.log(results);
this.dataSource = new MatTableDataSource(results);
this.dataSource.sort = this.sort;
})
onSearchClear(){
this.searchKey="";
this.applyFilter();
}
applyFilter(){
this.dataSource.filter = this.searchKey.trim().toLowerCase();
}
component.html
component.html
<mat-form-field class="search-form-field">
<input matInput [(ngModel)]="searchKey" placeholder="search by userName" (keyup)="applyFilter()">
</mat-form-field>
推荐答案
,您应该使用 MatTableDataSource
初始化this.dataSource之后,按如下所示定义自定义filterPredicate函数;
after you initialize this.dataSource, define a custom filterPredicate function as follows;
this.dataSource = new MatTableDataSource(results);
this.dataSource.sort = this.sort;
this.dataSource.filterPredicate = function(data: any, filterValue: string) {
return data.specificColumn /** replace this with the column name you want to filter */
.trim()
.toLocaleLowerCase().indexOf(filterValue.trim().toLocaleLowerCase()) >= 0;
};
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