Angular 如何添加多个表，每个表都具有角度材质中的筛选、排序和分页功能？
我环顾四周，发现没有一个答案支持Angular 如何添加多个表，每个表都具有角度材质中的筛选、排序和分页功能？,angular,angular-material,Angular,Angular Material,我环顾四周，发现没有一个答案支持n一页中的表数，其中每个表都有自己的筛选、排序和分页 在上，他们给出了一个一页一张表的例子 这是我为一张桌子写的- HTML 上面的代码主要取自《没有问题》和《奇迹》。现在，我所要寻找的是一种可以使这个表在*ngFor中工作的东西，它支持过滤、排序和分页。您需要使用@ViewChildren而不是@ViewChildren，并使用QueryList来有效地读取儿童 组件视图初始化完成后，还需要ngAfterViewInit（），以更新paginator和排序 请阅
n上面的代码主要取自《没有问题》和《奇迹》。现在，我所要寻找的是一种可以使这个表在
*ngFor@ViewChildren@ViewChildrenQueryListngAfterViewInit（）从'@angular/core'导入{Component，ViewChild，OnInit，AfterViewInit，QueryList，ViewChildren}；
从'@angular/material/paginator'导入{MatPaginator}；
从'@angular/material/sort'导入{MatSort}；
从“@angular/material/table”导入{MatTableDataSource}；
从“@angular/animations”导入{动画、状态、样式、转换、触发器}；
@组成部分({
选择器：'应用程序根'，
templateUrl:“./app.component.html”，
样式URL:['./app.component.css']，
动画：[
触发器（'detailExpand'[
状态（'collapped'，样式（{height:'0px'，minHeight:'0'}）），
状态（'expanded'，样式（{height:'*'}）），
过渡（“展开折叠”，动画（“225ms立方贝塞尔（0.4,0.0,0.2,1）”，
]),
]
})
导出类AppComponent实现OnInit，AfterViewInit{
//@ViewChild（MatPaginator，{static:true}）paginator:MatPaginator；
//@ViewChild（MatSort，{static:true}）sort:MatSort；
//使用ViewChildren和QueryList
@ViewChildren（MatPaginator）paginator=new QueryList（）；
@ViewChildren（MatSort）sort=newquerylist（）；
//columnsToDisplay=[“名称”、“重量”、“符号”、“位置”]；
//expandedElement:PeriodiceElement | null；
//数据源：MatTableDataSource；
//我们的循环在此基础上运行
表：any=[]；
构造函数（）{}
恩戈尼尼特（）{
//填写表1、2和3的各表数据
//你想怎么用就怎么用
[1,2,3].forEach（tableNumber=>{
这个。桌子。推({
列显示：[“名称”、“重量”、“符号”、“位置”]，
expandedElement:null，
数据源：新MatTableDataSource（元素数据），
分页器：空，
排序：空
});
});
}
ngAfterViewInit（）：void{
//this.dataSource.paginator=this.paginator；
//this.dataSource.sort=this.sort；
for（设i=0；i<mat-form-field>
<mat-label>Filter</mat-label>
<input matInput (keyup)="applyFilter($event)" placeholder="Ex. Mia">
</mat-form-field>
<table mat-table [dataSource]="dataSource" multiTemplateDataRows matSort>
<ng-container matColumnDef="{{column}}" *ngFor="let column of columnsToDisplay">
<th mat-header-cell *matHeaderCellDef mat-sort-header> {{column}} </th>
<td mat-cell *matCellDef="let element"> {{element[column]}} </td>
</ng-container>
<ng-container matColumnDef="expandedDetail">
<td mat-cell *matCellDef="let element" [attr.colspan]="columnsToDisplay.length">
<div class="table-element-detail" [@detailExpand]="element == expandedElement ? 'expanded' : 'collapsed'">
<div class="table-element-diagram">
<div class="table-element-position"> {{element.position}} </div>
<div class="table-element-symbol"> {{element.symbol}} </div>
<div class="table-element-name"> {{element.name}} </div>
<div class="table-element-weight"> {{element.weight}} </div>
</div>
<div class="table-element-description">
{{element.description}}
<span class="table-element-description-attribution"> -- Wikipedia </span>
</div>
</div>
</td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="columnsToDisplay"></tr>
<tr mat-row *matRowDef="let element; columns: columnsToDisplay;" class="table-element-row"
[class.table-expanded-row]="expandedElement === element"
(click)="expandedElement = expandedElement === element ? null : element">
</tr>
<tr mat-row *matRowDef="let row; columns: ['expandedDetail']" class="table-detail-row"></tr>
</table>
<mat-paginator [pageSizeOptions]="[5, 10, 25, 100]"></mat-paginator>
import { Component, ViewChild, OnInit, AfterViewInit } from '@angular/core';
import { MatPaginator } from '@angular/material/paginator';
import { MatSort } from '@angular/material/sort';
import { MatTableDataSource } from '@angular/material/table';
import { animate, state, style, transition, trigger } from '@angular/animations';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css'],
animations: [
trigger('detailExpand', [
state('collapsed', style({ height: '0px', minHeight: '0' })),
state('expanded', style({ height: '*' })),
transition('expanded <=> collapsed', animate('225ms cubic-bezier(0.4, 0.0, 0.2, 1)')),
]),
]
})
export class AppComponent implements OnInit, AfterViewInit {
@ViewChild(MatPaginator, { static: true }) paginator: MatPaginator;
@ViewChild(MatSort, { static: true }) sort: MatSort;
columnsToDisplay = ['name', 'weight', 'symbol', 'position'];
expandedElement: PeriodicElement | null;
dataSource: MatTableDataSource<PeriodicElement>;
constructor() { }
ngOnInit() {
this.dataSource = new MatTableDataSource(ELEMENT_DATA);
}
ngAfterViewInit(): void {
this.dataSource.paginator = this.paginator;
this.dataSource.sort = this.sort;
}
applyFilter(event: Event) {
const filterValue = (event.target as HTMLInputElement).value;
this.dataSource.filter = filterValue.trim().toLowerCase();
if (this.dataSource.paginator) {
this.dataSource.paginator.firstPage();
}
}
}
export interface PeriodicElement {
name: string;
position: number;
weight: number;
symbol: string;
description: string;
}
const ELEMENT_DATA: PeriodicElement[] = [
{
position: 1,
name: 'Hydrogen',
weight: 1.0079,
symbol: 'H',
description: `Hydrogen is a chemical element with symbol H and atomic number 1. With a standard
atomic weight of 1.008, hydrogen is the lightest element on the periodic table.`
}, {
position: 2,
name: 'Helium',
weight: 4.0026,
symbol: 'He',
description: `Helium is a chemical element with symbol He and atomic number 2. It is a
colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas
group in the periodic table. Its boiling point is the lowest among all the elements.`
}, {
position: 3,
name: 'Lithium',
weight: 6.941,
symbol: 'Li',
description: `Lithium is a chemical element with symbol Li and atomic number 3. It is a soft,
silvery-white alkali metal. Under standard conditions, it is the lightest metal and the
lightest solid element.`
}, {
position: 4,
name: 'Beryllium',
weight: 9.0122,
symbol: 'Be',
description: `Beryllium is a chemical element with symbol Be and atomic number 4. It is a
relatively rare element in the universe, usually occurring as a product of the spallation of
larger atomic nuclei that have collided with cosmic rays.`
}, {
position: 5,
name: 'Boron',
weight: 10.811,
symbol: 'B',
description: `Boron is a chemical element with symbol B and atomic number 5. Produced entirely
by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a
low-abundance element in the Solar system and in the Earth's crust.`
}, {
position: 6,
name: 'Carbon',
weight: 12.0107,
symbol: 'C',
description: `Carbon is a chemical element with symbol C and atomic number 6. It is nonmetallic
and tetravalent—making four electrons available to form covalent chemical bonds. It belongs
to group 14 of the periodic table.`
}, {
position: 7,
name: 'Nitrogen',
weight: 14.0067,
symbol: 'N',
description: `Nitrogen is a chemical element with symbol N and atomic number 7. It was first
discovered and isolated by Scottish physician Daniel Rutherford in 1772.`
}, {
position: 8,
name: 'Oxygen',
weight: 15.9994,
symbol: 'O',
description: `Oxygen is a chemical element with symbol O and atomic number 8. It is a member of
the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing
agent that readily forms oxides with most elements as well as with other compounds.`
}, {
position: 9,
name: 'Fluorine',
weight: 18.9984,
symbol: 'F',
description: `Fluorine is a chemical element with symbol F and atomic number 9. It is the
lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard
conditions.`
}, {
position: 10,
name: 'Neon',
weight: 20.1797,
symbol: 'Ne',
description: `Neon is a chemical element with symbol Ne and atomic number 10. It is a noble gas.
Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about
two-thirds the density of air.`
},
];
table {
width: 100%;
}
tr.table-detail-row {
height: 0;
}
tr.table-element-row:not(.table-expanded-row):hover {
background: whitesmoke;
}
tr.table-element-row:not(.table-expanded-row):active {
background: #efefef;
}
.table-element-row td {
border-bottom-width: 0;
}
.table-element-detail {
overflow: hidden;
display: flex;
}
.table-element-diagram {
min-width: 80px;
border: 2px solid black;
padding: 8px;
font-weight: lighter;
margin: 8px 0;
height: 104px;
}
.table-element-symbol {
font-weight: bold;
font-size: 40px;
line-height: normal;
}
.table-element-description {
padding: 16px;
}
.table-element-description-attribution {
opacity: 0.5;
}
import { Component, ViewChild, OnInit, AfterViewInit, QueryList, ViewChildren } from '@angular/core';
import { MatPaginator } from '@angular/material/paginator';
import { MatSort } from '@angular/material/sort';
import { MatTableDataSource } from '@angular/material/table';
import { animate, state, style, transition, trigger } from '@angular/animations';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css'],
animations: [
trigger('detailExpand', [
state('collapsed', style({ height: '0px', minHeight: '0' })),
state('expanded', style({ height: '*' })),
transition('expanded <=> collapsed', animate('225ms cubic-bezier(0.4, 0.0, 0.2, 1)')),
]),
]
})
export class AppComponent implements OnInit, AfterViewInit {
// @ViewChild(MatPaginator, { static: true }) paginator: MatPaginator;
// @ViewChild(MatSort, { static: true }) sort: MatSort;
// using ViewChildren and QueryList
@ViewChildren(MatPaginator) paginator = new QueryList<MatPaginator>();
@ViewChildren(MatSort) sort = new QueryList<MatSort>();
// columnsToDisplay = ['name', 'weight', 'symbol', 'position'];
// expandedElement: PeriodicElement | null;
// dataSource: MatTableDataSource<PeriodicElement>;
// our loop runs on this
tables: any = [];
constructor() { }
ngOnInit() {
// filling in each table data for table 1, 2, and 3
// use it however you'd like to
[1, 2, 3].forEach(tableNumber => {
this.tables.push({
columnsToDisplay: ['name', 'weight', 'symbol', 'position'],
expandedElement: null,
dataSource: new MatTableDataSource(ELEMENT_DATA),
paginator: null,
sort: null
});
});
}
ngAfterViewInit(): void {
// this.dataSource.paginator = this.paginator;
// this.dataSource.sort = this.sort;
for (let i = 0; i < this.tables.length; i++) {
this.tables[i].dataSource.paginator = this.paginator.toArray()[i];
this.tables[i].dataSource.sort = this.sort.toArray()[i];
}
}
// dataSource is a parameter here
applyFilter(event: Event, dataSource: any) {
const filterValue = (event.target as HTMLInputElement).value;
dataSource.filter = filterValue.trim().toLowerCase();
if (dataSource.paginator) {
dataSource.paginator.firstPage();
}
}
}
export interface PeriodicElement {
name: string;
position: number;
weight: number;
symbol: string;
description: string;
}
const ELEMENT_DATA: PeriodicElement[] = [
{
position: 1,
name: 'Hydrogen',
weight: 1.0079,
symbol: 'H',
description: `Hydrogen is a chemical element with symbol H and atomic number 1. With a standard
atomic weight of 1.008, hydrogen is the lightest element on the periodic table.`
}, {
position: 2,
name: 'Helium',
weight: 4.0026,
symbol: 'He',
description: `Helium is a chemical element with symbol He and atomic number 2. It is a
colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas
group in the periodic table. Its boiling point is the lowest among all the elements.`
}, {
position: 3,
name: 'Lithium',
weight: 6.941,
symbol: 'Li',
description: `Lithium is a chemical element with symbol Li and atomic number 3. It is a soft,
silvery-white alkali metal. Under standard conditions, it is the lightest metal and the
lightest solid element.`
}, {
position: 4,
name: 'Beryllium',
weight: 9.0122,
symbol: 'Be',
description: `Beryllium is a chemical element with symbol Be and atomic number 4. It is a
relatively rare element in the universe, usually occurring as a product of the spallation of
larger atomic nuclei that have collided with cosmic rays.`
}, {
position: 5,
name: 'Boron',
weight: 10.811,
symbol: 'B',
description: `Boron is a chemical element with symbol B and atomic number 5. Produced entirely
by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a
low-abundance element in the Solar system and in the Earth's crust.`
}, {
position: 6,
name: 'Carbon',
weight: 12.0107,
symbol: 'C',
description: `Carbon is a chemical element with symbol C and atomic number 6. It is nonmetallic
and tetravalent—making four electrons available to form covalent chemical bonds. It belongs
to group 14 of the periodic table.`
}, {
position: 7,
name: 'Nitrogen',
weight: 14.0067,
symbol: 'N',
description: `Nitrogen is a chemical element with symbol N and atomic number 7. It was first
discovered and isolated by Scottish physician Daniel Rutherford in 1772.`
}, {
position: 8,
name: 'Oxygen',
weight: 15.9994,
symbol: 'O',
description: `Oxygen is a chemical element with symbol O and atomic number 8. It is a member of
the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing
agent that readily forms oxides with most elements as well as with other compounds.`
}, {
position: 9,
name: 'Fluorine',
weight: 18.9984,
symbol: 'F',
description: `Fluorine is a chemical element with symbol F and atomic number 9. It is the
lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard
conditions.`
}, {
position: 10,
name: 'Neon',
weight: 20.1797,
symbol: 'Ne',
description: `Neon is a chemical element with symbol Ne and atomic number 10. It is a noble gas.
Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about
two-thirds the density of air.`
},
];
<!-- adding loop -->
<ng-container *ngFor="let table of tables; index as tableIndex;">
<mat-form-field>
<mat-label>Filter</mat-label>
<!-- updating applyFilter with current table's dataSource parameter -->
<input matInput (keyup)="applyFilter($event, table.dataSource)" placeholder="Ex. Mia">
</mat-form-field>
<!-- using current table's dataSource -->
<table mat-table [dataSource]="table.dataSource" multiTemplateDataRows matSort>
<!-- using current table's columnsToDisplay -->
<ng-container matColumnDef="{{column}}" *ngFor="let column of table.columnsToDisplay">
<th mat-header-cell *matHeaderCellDef mat-sort-header> {{column}} </th>
<td mat-cell *matCellDef="let element"> {{element[column]}} </td>
</ng-container>
<ng-container matColumnDef="expandedDetail">
<!-- using current table's columnsToDisplay -->
<td mat-cell *matCellDef="let element" [attr.colspan]="table.columnsToDisplay.length">
<!-- using current table's expandedElement -->
<div class="table-element-detail" [@detailExpand]="element == table.expandedElement ? 'expanded' : 'collapsed'">
<div class="table-element-diagram">
<div class="table-element-position"> {{element.position}} </div>
<div class="table-element-symbol"> {{element.symbol}} </div>
<div class="table-element-name"> {{element.name}} </div>
<div class="table-element-weight"> {{element.weight}} </div>
</div>
<div class="table-element-description">
{{element.description}}
<span class="table-element-description-attribution"> -- Wikipedia </span>
</div>
</div>
</td>
</ng-container>
<!-- using current table's columnsToDisplay -->
<tr mat-header-row *matHeaderRowDef="table.columnsToDisplay"></tr>
<!-- using current table's columnsToDisplay and expandedElement -->
<tr mat-row *matRowDef="let element; columns: table.columnsToDisplay;" class="table-element-row"
[class.table-expanded-row]="table.expandedElement === element"
(click)="table.expandedElement = table.expandedElement === element ? null : element">
</tr>
<tr mat-row *matRowDef="let row; columns: ['expandedDetail']" class="table-detail-row"></tr>
</table>
<mat-paginator [pageSizeOptions]="[5, 10, 25, 100]"></mat-paginator>
</ng-container>