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我有 3 个组件： 1. 客户列表 2. 客户（姓名） 3. 客户的完整信息（姓名、年龄、地址），当我单击用户项时必须出现这些信息。

而且我不明白，当我在客户端列表中单击此客户端时，如何获取有关特定客户端的信息（如何显示第三个组件）。

这是我的代码：

1) 客户列表.component.ts：

import { Component, OnInit, Input } from '@angular/core';
import { ClientsService } from '../clients.service';
import { Client } from '../../models/client.model';  

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

  public clients: Client[] = [];
  public selectedClient;
  constructor(private _clientsService: ClientsService) {}
  ngOnInit() {
    this._clientsService.getClient()
      .subscribe(data => this.clients = data);
  }

}

客户列表.component.html：

<app-client-detail *ngFor="let client of clients" [clients]="client" (clientSelected)="selectedClient=client"></app-client-detail>
<app-selected-client-details></app-selected-client-details>

2）客户端细节.component.ts：

import { Component, OnInit, Input, Output, EventEmitter } from '@angular/core';
@Component({
  selector: 'app-client-detail',
  templateUrl: './client-detail.component.html',
  styleUrls: ['./client-detail.component.css']
})
export class ClientDetailComponent implements OnInit {
  @Input() clients;
  @Output() clientSelected: EventEmitter<any> = new EventEmitter;
  constructor() {}
  ngOnInit() {}
  selectClient() {
    this.clientSelected.emit();
  }
}

客户端详细信息.component.html：

<div (click)="selectClient()">
  <p>{{clients.name}}</p>
</div>

3) selected-client-details.component.ts:

import {Component, OnInit, Input} from '@angular/core';
@Component({
  selector: 'app-selected-client-details',
  templateUrl: './selected-client-details.component.html',
  styleUrls: ['./selected-client-details.component.css']
})
export class SelectedClientDetailsComponent implements OnInit {
  @Input() selectedClient;

  constructor() {}
  ngOnInit() {}
}

selected-client-details.component.html:

<div>
  <p>{{selectedClient?.firstName}}</p>
  <p>{{selectedClient?.age}}</p>
  <p>{{selectedClient?.address}}</p>
</div>

如果我的 clients-list.component.html 看起来像这样 -

<app-client-detail *ngFor="let client of clients" [clients]="client" (clientSelected)="selectedClient=client"></app-client-detail>

<div>
  <p>{{selectedClient?.firstName}}</p>
  <p>{{selectedClient?.age}}</p>
  <p>{{selectedClient?.address}}</p>
</div>
  • 有用。当我点击用户时，阻止出现用户信息。但是用户的信息必须是另一个组件。还有一个问题。

我想我必须做这样的事情：

（在 clients-list.component.html 中）

<app-client-detail *ngFor="let client of clients" class="client-item" [clients]="client" (clientSelected)="selectedClient=client"></app-client-detail>

<app-selected-client-details [???]></app-selected-client-details>

但我无法理解我该怎么做。请帮我...

4

1 回答 1

0

我对您的代码做了一些更改，但首先在客户端详细信息selectClient方法上发出未定义我已修复

this.clientSelected.emit(this.client); // client was clients

clients-list.component.html 看起来像这样

<app-client-detail *ngFor="let client of clients" [client]="client" 
(clientSelected)="selectedClientComponent.selectedClient=$event"></app-client-detail>


<app-selected-client-details #selectedClientComponent></app-selected-client-details>

这就是我如何通过模板引用将选定的客户端发送到选定的客户端组件#selectedClientComponent并将 $event 分配给 selectedClientComponent 的 selectedClient

selectedClientComponent.selectedClient=$事件

$event 是发出的客户对象

堆栈闪电战示例

于 2018-07-21T08:33:11.103 回答