Javascript Angular2将组件方法导入到另一个组件中
我有一个home组件,它需要调用LoginComponent方法isLoggedIn()来检查用户是否按如下方式在@CanActivate中登录 仅当用户登录并通过身份验证时,主组件才应激活 HomeComponent.tsJavascript Angular2将组件方法导入到另一个组件中,javascript,angularjs,angular,auth0,Javascript,Angularjs,Angular,Auth0,我有一个home组件,它需要调用LoginComponent方法isLoggedIn()来检查用户是否按如下方式在@CanActivate中登录 仅当用户登录并通过身份验证时,主组件才应激活 HomeComponent.ts import {Component, OnInit} from 'angular2/core'; import {AboutComponent} from "../about/AboutComponent"; import {ROUTER_DIRECTIVES} from
import {Component, OnInit} from 'angular2/core';
import {AboutComponent} from "../about/AboutComponent";
import {ROUTER_DIRECTIVES} from "angular2/router";
import {LoginComponent} from '../login/LoginComponent'
@Component({
selector: 'home',
/* template: `
<div>
<div class="input">
<label for="Name">Name</label>
<input type="text" id="name" #name>
</div>
<button (click)="onGetAll(name.value)">GET Request
</button>
<p>Response: {{response}}</p>
</div>
<a [routerLink]="['../About']">link to About component</a>
`,*/
templateUrl: '../app/templates/dashboard.html',
styleUrls: ['../app/assets/light-bootstrap-dashboard.css','../app/assets/demo.css','../app/assets/pe-icon-7-stroke. css','../app/assets/bootstrap.min.css'],
directives : [ROUTER_DIRECTIVES]
})
@CanActivate(() => LoginComponent.loggedIn()) //<-- This is not working
export class HomeComponent implements OnInit {
response: string;
constructor() {}
ngOnInit() {}
onGetAll(name: string){
console.log("Button clicked.. more code goes here " + name);
}
}
从'angular2/core'导入{Component,OnInit};
从“./about/AboutComponent”导入{AboutComponent};
从“angular2/ROUTER”导入{ROUTER_指令};
从“../login/LoginComponent”导入{LoginComponent}
@组成部分({
选择器:“主页”,
/*模板:`
名称
获取请求
响应:{{Response}
链接到关于组件
`,*/
templateUrl:“../app/templates/dashboard.html”,
样式URL:['../app/assets/light bootstrap dashboard.css'、'../app/assets/demo.css'、'../app/assets/pe-icon-7-stroke.css'、'../app/assets/bootstrap.min.css'],
指令:[路由器指令]
})
@CanActivate(()=>LoginComponent.loggedIn())/loggedIn
方法不是静态方法,因此不会调用它
话虽如此,理想情况下,要检查用户是否登录了状态,您应该调用服务
服务应告知用户是否已登录,并且应在服务上使用静态方法。是,我有一个服务AuthService。它已导入LoginComponent。您可以将loggedin设置为静态方法并重试吗?返回的tokennotexpired方法是什么?它是来自auth0的某个方法吗?谢谢,它成功了。tokenexpired()是来自Auth0的布尔值。在登录和主组件的父组件中添加AuthService作为提供程序。通常是应用程序组件。从登录中删除它。现在将其注入home和login组件,并检查您需要的任何内容。由于您只提供了一次身份验证服务,因此将只为该服务创建一个副本
import {Component} from 'angular2/core';
import {Router, RouteConfig, ROUTER_DIRECTIVES} from 'angular2/router';
import {AuthHttp,AuthConfig, tokenNotExpired, AUTH_PROVIDERS} from 'angular2-jwt';
import {HomeComponent} from '../home/HomeComponent'
import {AboutComponent} from '../about/AboutComponent'
import {AuthService} from '../../services/AuthService'
declare var Auth0Lock;
@Component({
selector: 'protected',
template: '<router-outlet></router-outlet>',
directives: [ROUTER_DIRECTIVES],
providers: [AUTH_PROVIDERS,AuthService]
})
export class LoginComponent {
constructor(private auth: AuthService) {
this.auth.login();
}
login() {
this.auth.login();
}
logout() {
this.auth.logout();
}
loggedIn() {
return tokenNotExpired();
}
}