Question

当我点击＆＃34;编辑＆＃34;我的RouteParams不能正常工作按钮。

在第一个视图中，我点击 bob行上的编辑btn 这是第二个视图

现在我点击浏览器中的后退按钮，然后返回到第一个视图。然后我点击弹出行上的编辑btn，这是第三个视图（与第二个视图相同，这是错误的）

我把一些控制台调试好了。这是控制台日志

这是第一个视图的代码，当我点击编辑按钮时，它会触发func并在console.log图片中记录1和3条记录

array = array.sort(function (x, y) {
    return days.indexOf(x.slice(0,3)) - days.indexOf(y.slice(0,3));
});

这是第二个视图的代码，在我单击编辑按钮并跳转到编辑视图后，它会触发构造函数并在console.log图片中记录2和4条记录

import {Component} from 'angular2/core';
import {CORE_DIRECTIVES} from 'angular2/common';
import { Router, RouteParams, ROUTER_DIRECTIVES } from 'angular2/router';
import {MailingListService} from'../../services/mailing-list/mailing-lists.service'
import {Subscriber} from '../../models/subscriber/subscriber';
import 'rxjs/Rx';
import {Observable} from 'rxjs/Rx';

@Component({
selector: 'subscriber-list-edit-view',
templateUrl: './app/components/subscriber-list-editor-view/subscriber-list-editor-view.html',
directives: [ROUTER_DIRECTIVES]
})

export class EditSubscriberListViewComponent {

subscribers: Subscriber[];
id: string;
constructor(private mailingListsService: MailingListService, params: RouteParams, private router: Router) {

    this.init(this.id = params.get("id"));
}


init(id: string) {
    this.mailingListsService.getSubscribers(this.id).subscribe(x => {
        this.subscribers = x;
    });
}
//this is fired when click the edit button
editSubscriber(subscriber: Subscriber) {

    this.router.navigate(['Subscribers.Edit', { id: this.id, subscriber: subscriber }]);
    console.log(subscriber);//this print the first and third record in console.log
}



deleteSubscriber(subscriber: Subscriber) {

    this.mailingListsService.deleteSubscriber(this.id, subscriber)
        .subscribe(() => { this.init(this.id) });

}


}

}

如你所见，console.log中的第四条记录不正确所以我认为这是params问题。但我不知道为什么以及如何解决问题。

这是routeconfig

import {Component} from 'angular2/core';
import { Router, RouteParams } from 'angular2/router';
import {CORE_DIRECTIVES} from 'angular2/common';  
import {Subscriber}from '../../models/subscriber/subscriber';
import {MailingListService} from'../../services/mailing-list/mailing-lists.service'

@Component({
selector: 'create-subscriber-view',
templateUrl: './app/components/subscriber-creator-view/subscriber-creator-view.html'
})

export class CreateSubscriberComponent {
subscriber: Subscriber;
id: string;
subscriberId: string;  
name: string;
phoneNumber: string;
email: string;
isActivated: boolean;
isBusy: boolean;
isEdit: boolean;
constructor(private mailingListService: MailingListService,private params: RouteParams, private router: Router) {
    this.id = params.get("id");
    this.subscriber = params.get("subscriber");

    console.log(params.get("subscriber")); //this doesn't work well,print the second and forth record in the console.log

    if (this.subscriber != null) { this.isEdit = true; this.name = this.subscriber.name; this.phoneNumber = this.subscriber.phoneNumber; this.email = this.subscriber.email; this.subscriberId = this.subscriber.id; this.isActivated = this.subscriber.isActivated;};          

}

create() {
    if (this.phoneNumber == null && this.email == null) { alert("either phone or email is required ! "); return; }
    this.isBusy = true;
    this.mailingListService.createSubscriber(this.id, {
        name: this.name,
        phoneNumber: this.phoneNumber,
        email: this.email
    })     
        .subscribe(() => { this.router.navigate(['MailingLists.View', { id: this.id }]) });  
}  

edit() {
    if (this.phoneNumber == null && this.email == null) { alert("either phone or email is required ! "); return; }
    this.isBusy = true;
    this.mailingListService.editSubscriber(this.id, {
        name: this.name,
        phoneNumber: this.phoneNumber,
        email: this.email
    })
        .subscribe(() => { this.router.navigate(['MailingLists.View', { id: this.id }]) });  
}

创建和编辑使用相同的组件，但使用不同的URL。

Answer 1

因为之前我将订阅者作为对象传递，而routeparams通过引用找到该对象。这也许是它没有刷新数据的原因。

我这里有一个有效的解决方案。只需执行JSON.stringify（订阅者），然后传递传递字符串的对象。

editSubscriber(subscriber: Subscriber) {
    this.router.navigate(['Subscribers.Edit', { id: this.id, subscriberString: JSON.stringify(subscriber) }])//here

}

现在，在第二个组件中，您将获得字符串并执行JSON.parse（）

 constructor(private mailingListService: MailingListService, private params: RouteParams, private router: Router) {
    this.id = params.get("id");
    this.subscriberString = params.get("subscriberString");            
    if (this.subscriberString != null) {
        this.isEdit = true;
        this.subscriber = JSON.parse(this.subscriberString);//Here
        this.name = this.subscriber.name;
        this.phoneNumber = this.subscriber.phoneNumber;
        this.email = this.subscriber.email;
        this.subscriberId = this.subscriber.id;
        this.isActivated = this.subscriber.isActivated;
    };          

}

永远记住你的routeparams只能是字符串数字boolean（原始类型？）

的类型

为什么我在Angle2中的RouteParams没有在angular2中刷新？

1 个答案: