如何动态地绑定一个复选框Angular 2的值

发布时间：2020-12-17 09:26:52 所属栏目：安全来源：网络整理

导读：嗨所有：我有一个组件.组件视图有一个表： div class="container"h2Recipients List/h2brtable class="table table-striped" thead tr thId/th thName/th thPhone/th thStatus/th thSelect/th /tr /thead tbody tr *ngFor="#rp of arrAll" td{{rp.id}}/td td

嗨所有：我有一个组件.组件视图有一个表：

<div class="container">
<h2>Recipients List</h2>
<br>
<table class="table table-striped">
    <thead>
        <tr>
            <th>Id</th>
            <th>Name</th>
            <th>Phone</th>
            <th>Status</th>
            <th>Select</th>
        </tr>
    </thead>
    <tbody>
        <tr *ngFor="#rp of arrAll">   
            <td>{{rp.id}}</td>             
            <td>{{rp.name}}</td>
            <td>{{rp.phone}}</td>                
            <td>{{rp.isActivated?'Active':'Inactive'}}</td>             
            <td>
                <input #{{rp.id}}  type="checkbox" (change)="checkbox(value)">
            </td>
        </tr>          
    </tbody>
</table>

<button class="btn btn-success" (click)="newRecipient()">New Recipient</button>
<button class="btn btn-danger pull-right" (click) ="deleteRecipients()">Delete Recipients</button>

以下是使用* ngFor生成的table view图像的链接.

业务逻辑是“当删除按钮被点击时,必须删除所有被检查的收件人”.我想传递一个参数到我的删除函数(我认为应该是一个包含检查的收件人ID的数组)

这是我的组件代码：

import {Component} from 'angular2/core';
import {CORE_DIRECTIVES} from 'angular2/common';
import { Router,RouteParams } from 'angular2/router';
import {RecipientsService}    from'../../services/recipients/recipients.service';
import {Recipient} from '../../models/recipient/recipient';

@Component({
selector: 'recipient-list-view',templateUrl: './app/components/recipient-list-view/recipient-list-view.html',styleUrls: ["./app/components/recipient-list-view/style.css"]
})

export class RecipientListViewComponent {

arrAll: Recipient[];

constructor(private recipientsService: RecipientsService,params:    RouteParams,private router: Router) {
    this.arrAll = recipientsService.getAll();        
}

newRecipient() {
    this.router.navigate(['../NewRecipient']);
}

deleteRecipients() {  //need to know which recipients are checked

    console.log("delete");
}


}

我想知道如何实现这一点.

干杯

将选定的属性添加到收件人.在复选框更改,将其设置为true.

一旦用户点击删除所有收件人,只需筛选所选的列表.

这样的事情

<div class="container">
    <h2>Recipients List</h2>
    <br>
    <table class="table table-striped">
        <thead>
            <tr>
                <th>Id</th>
                <th>Name</th>
                <th>Phone</th>
                <th>Status</th>
                <th>Select</th>
            </tr>
        </thead>
        <tbody>
            <tr *ngFor="#rp of arrAll">   
                <td>{{rp.id}}</td>             
                <td>{{rp.name}}</td>
                <td>{{rp.phone}}</td>                
                <td>{{rp.isActivated?'Active':'Inactive'}}</td>             
                <td>
                    <input #{{rp.id}}  [(ngModel)]="rp.selected" type="checkbox" (change)="checkbox(rp)">
                </td>
            </tr>          
        </tbody>
    </table>

    <button class="btn btn-success" (click)="newRecipient()">New Recipient</button>
    <button class="btn btn-danger pull-right" (click) ="deleteRecipients()">Delete Recipients</button>
</div>

而组件：

export class RecipientListViewComponent {

     arrAll: Recipient[];

     constructor(private recipientsService: RecipientsService,params: RouteParams,private router: Router) {
        this.arrAll = recipientsService.getAll();        
    }

    newRecipient() {
        this.router.navigate(['../NewRecipient']);
    }

    deleteRecipients() {  //need to know which recipients are checked
        let selected = this.arrAll.filter((x) => x.selected)
        console.log(selected);
    }

    checkbox(recipient) {
        recipient.selected = (recipient.selected) ? false : true;
    }
}

（编辑：李大同）

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