获取 angular primeng 中多个复选框的值

Question

想从多个复选框中获取值。
每一行都包含用户名和授予用户的权限，即读、写。
在下面的代码中，我试图将权限授予用户，即读、写。
因为 UI 我正在使用 primeng 复选框。
检查需要将读取的值添加到用户数组中。

app.component.ts

import { Component, OnInit } from '@angular/core';
import { supportsWebAnimations } from '@angular/animations/browser/src/render/web_animations/web_animations_driver';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {

  users: Array<any>;
  permissions: Array<any> = [];


  ngOnInit(){

    this.users = [
      {id: 1, name: 'Sam', permission: []},
      {id: 2, name: 'Adam', permission: []},
      {id: 3, name: 'Chris', permission: []}
    ]


  }
}

app.component.html

<h3 class="first">Permission</h3>
<div class="ui-g" style="margin-bottom:10px; ">
    <div  class="ui-g-2"><b>Name</b></div>
    <div  class="ui-g-2"><b>Read</b></div>
    <div  class="ui-g-2"><b>Write</b></div>
</div>
<div class="ui-g" style="margin-bottom:10px;" *ngFor ="let user of users; let i = index">
    <div  class="ui-g-2">{{user.name}}</div>
    <div  class="ui-g-2"><p-checkbox name="group[i]" value="Read"  [(ngModel)]="permissions[i]" inputId="R"></p-checkbox></div> 
    <div  class="ui-g-2"><p-checkbox name="group[i]" value="Write"  [(ngModel)]="permissions[i]" inputId="W"></p-checkbox></div>
</div>

Answer 1

您必须在模型中包含这些 read/write 标志并将它们连接到正确的复选框。例如

this.users = [
  {id: 1, name: 'Sam', permission: {read:false,write:false}},
  {id: 2, name: 'Adam', permission: {read:false,write:false}},
  {id: 3, name: 'Chris', permission: {read:false,write:false}}
]

和

<div class="ui-g" style="margin-bottom:10px;" *ngFor ="let user of users; let i = index">
    <div  class="ui-g-2">{{user.name}}</div>
    <div  class="ui-g-2"><p-checkbox  [(ngModel)]="user.permissions.read" inputId="R"></p-checkbox></div> 
    <div  class="ui-g-2"><p-checkbox  [(ngModel)]="user.permissions.write" inputId="W"></p-checkbox></div>
</div>

模型中的值将根据复选框状态相应地切换为 true/false。至少我会这样做。

Answer 2

您可以维护一个 permission 对象并将其绑定到您的复选框，而不是维护一个 permission 数组。

在那种情况下就不需要维护索引了。

您的代码将是这样的：

import { Component, OnInit } from '@angular/core';
import { supportsWebAnimations } from '@angular/animations/browser/src/render/web_animations/web_animations_driver';

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {

  users: Array<any>;
  permissions: Array<any> = [];


  ngOnInit(){

    this.users = [
      {id: 1, name: 'Sam', permission: { read: true, write: true}},
      {id: 2, name: 'Adam', permission: { read: false, write: true}},
      {id: 3, name: 'Chris', permission: { write: true, read: false}}
    ]
  }

}

还有你的HTML：

<h3 class="first">Permission</h3>
<div class="ui-g" style="margin-bottom:10px; ">
    <div  class="ui-g-2"><b>Name</b></div>
    <div  class="ui-g-2"><b>Read</b></div>
    <div  class="ui-g-2"><b>Write</b></div>
</div>
<div class="ui-g" style="margin-bottom:10px;" *ngFor ="let user of users; let i = index">
    <div  class="ui-g-2">{{user.name}}</div>
    <div  class="ui-g-2"><p-checkbox type="checkbox" name="group[i]" value="Read"  [(ngModel)]="user.permission.read" inputId="R"></p-checkbox></div> 
    <div  class="ui-g-2"><p-checkbox type="checkbox" name="group[i]" value="Write"  [(ngModel)]="user.permission.write" inputId="W"></p-checkbox></div>
</div>

与 PrimeNG

您需要添加

binary="true"

属性到您的复选框

你可以在这里看到demo

获取 angular primeng 中多个复选框的值

Get value of multiple checkbox in angular primeng

primeng

angular