如何为垫卡添加垫分页器? [英] How to add mat-paginator for mat-cards?

问题描述

我是 Angular 的新手，我正在寻找 mat-cards 上的分页.我见过的例子只有表格的分页.

我有数百个代码，希望将其限制为每页 8-10 张卡片.如何实现这一目标?这是我的 html 和 ts 代码.

.html 文件

<div class="flip-right" [ngClass]="mobileQuery.matches ? 'card-wrapper-mobile' : 'card-wrapper'" *ngFor="let items of datasource"><div class="card"><div class="front"><mat-card [ngClass]="mobileQuery.matches ? 'mobile-card' : 'desktop-card'"><a routerLink="/viewPage"><mat-card-header class="header"><mat-card-title>{{items.name}} <mat-icon class="verified title" [inline]="true" >lock</mat-icon></mat-card-title></mat-card-header><mat-card-subtitle class="first-subtitle">上次更新时间:{{items.Last_updated_on}}</mat-card-subtitle><mat-card-subtitle>最后更新者:{{items.Last_updated_by}}</mat-card-subtitle><mat-card-subtitle>{{items.created_by}}</mat-card-subtitle></a></mat-card>

<div class="back"><mat-card [ngClass]="mobileQuery.matches ? 'mobile-card': 'desktop-card'"><a routerLink="/viewPage"><mat-card-header><mat-card-title>{{items.name}}<mat-icon class="verified" [inline]="true" >lock</mat-icon></mat-card-title></mat-card-header></a></mat-card>

.ts 文件

 import { Component, OnInit,ViewChild } from '@angular/core';从'rxjs'导入{订阅}；从'../cards-info.service'导入{ CardsInfoService}；从@angular/cdk/layout"导入 {MediaMatcher}；从@angular/core"导入 {ChangeDetectorRef, OnDestroy}；@成分({选择器:'app-private',templateUrl: './private.component.html',styleUrls: ['./private.component.scss']})导出类 PrivateComponent 实现 OnInit,OnDestroy {数据源=[];订阅:订阅；mobileQuery: MediaQueryList;私人 _mobileQueryListener: () =>空白;构造函数(媒体:MediaMatcher，changeDetectorRef: ChangeDetectorRef,私人卡信息:卡信息服务){this.mobileQuery = media.matchMedia('(max-width: 600px)');this._mobileQueryListener = () =>changeDetectorRef.detectChanges();this.mobileQuery.addListener(this._mobileQueryListener);}ngOnDestroy(): 无效 {this.mobileQuery.removeListener(this._mobileQueryListener);}ngOnInit(){this.cardsInfo.getCardsInfo().订阅(数据 =>{this.datasource = 数据；});}}

如果需要，我会在 stackblitz 中添加我的代码.

解决方案

这个答案总结了如何解决的关键点让 mat-paginator 在没有 mat-table 的情况下工作.以下是您或其他任何人在将 mat-paginator 与其他元素/组件一起使用时需要进行的详细更改.

您需要在模板底部添加一个 mat-paginator，如下所示:

<mat-paginator [pageSizeOptions]="[5, 10, 25, 100]"></mat-paginator>

然后在您的组件中使用 ViewChild 访问它:

@ViewChild(MatPaginator) 分页器:MatPaginator;

在 ngOnInit 中将其链接到您的数据源:

this.dataSource.paginator = this.paginator;

并重写您绑定数据源的方式:

obs: Observable;//Card 是您用于数据源的任何类型，DATA 是您的数据数据源:MatTableDataSource<卡片>= new MatTableDataSource(DATA);ngOnInit() {this.obs = this.dataSource.connect();}

然后像这样使用模板中的数据源:

<!-- 在此处显示您的数据--></mat-card>

<块引用>

可以找到 mat-card 与 mat-paginator 的工作堆栈闪电战此处.

I'm new to Angular and I'm looking for pagination on mat-cards. The examples I've seen has only pagination for tables.

I have hundreds of code and would like to restrict it to 8-10 cards per page. How to acheive this? This is my html and ts code.

.html file

<div  class="flip-right" [ngClass]="mobileQuery.matches ? 'card-wrapper-mobile' : 'card-wrapper'" *ngFor="let items of datasource">
   <div class="card">
      <div class="front">
          <mat-card [ngClass]="mobileQuery.matches ? 'mobile-card' : 'desktop-card'">
                    <a routerLink="/viewPage">
                      <mat-card-header class="header">
                          <mat-card-title>{{items.name}} <mat-icon class="verified title" [inline]="true" >lock</mat-icon></mat-card-title>
                        </mat-card-header>
                            <mat-card-subtitle class="first-subtitle">Last updated on:{{items.Last_updated_on}}</mat-card-subtitle>
                            <mat-card-subtitle>Last updated by:{{items.Last_updated_by}}</mat-card-subtitle>
                        <mat-card-subtitle>{{items.created_by}}</mat-card-subtitle>

                    </a>
            </mat-card>
  </div>
  <div class="back">
      <mat-card [ngClass]="mobileQuery.matches ? 'mobile-card' : 'desktop-card'">
                <a routerLink="/viewPage">
                  <mat-card-header>
                      <mat-card-title>{{items.name}}<mat-icon class="verified" [inline]="true" >lock</mat-icon></mat-card-title>
                    </mat-card-header>

                </a>
        </mat-card>
      </div>
     </div>
    </div>

.ts file

  import { Component, OnInit,ViewChild } from '@angular/core';
  import { Subscription } from 'rxjs';
  import { CardsInfoService } from '../cards-info.service';
  import {MediaMatcher} from '@angular/cdk/layout';
  import {ChangeDetectorRef, OnDestroy} from '@angular/core';


  @Component({
  selector: 'app-private',
  templateUrl: './private.component.html',
  styleUrls: ['./private.component.scss']
  })
  export class PrivateComponent implements OnInit,OnDestroy {
  datasource=[];
  subscription: Subscription;
  mobileQuery: MediaQueryList;

  private _mobileQueryListener: () => void;

  constructor( media: MediaMatcher,
  changeDetectorRef: ChangeDetectorRef,
  private cardsInfo :CardsInfoService) { 

  this.mobileQuery = media.matchMedia('(max-width: 600px)');
  this._mobileQueryListener = () => changeDetectorRef.detectChanges();
  this.mobileQuery.addListener(this._mobileQueryListener);
  }

  ngOnDestroy(): void {
  this.mobileQuery.removeListener(this._mobileQueryListener);
  }
  ngOnInit(){
   this.cardsInfo.getCardsInfo()
   .subscribe(
    data => {
    this.datasource = data;
    });  
    }
  }

I will add my code in stackblitz if needed.

解决方案

This answer sums up the key points on how to make mat-paginator work without a mat-table. Below are the detailed changes you or anyone else would need to make to use mat-paginator with other elements/components.

You would need to add a mat-paginator at the bottom of your template like this:

<mat-paginator [pageSizeOptions]="[5, 10, 25, 100]"></mat-paginator>

Then access it in your component with ViewChild:

@ViewChild(MatPaginator) paginator: MatPaginator;

Link it to your datasource in ngOnInit:

this.dataSource.paginator = this.paginator;

And rewrite how you bind your datasource:

obs: Observable<any>;
// Card is whatever type you use for your datasource, DATA is your data
dataSource: MatTableDataSource<Card> = new MatTableDataSource<Card>(DATA);

ngOnInit() {
  this.obs = this.dataSource.connect();
}

And then use the datasource in your template like this:

<mat-card *ngFor="let card of obs | async">
  <!-- display your data here -->
</mat-card>

Working stackblitz for mat-card with mat-paginator can be found here.

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