我正在加载标签之间的一些div。它的波纹管。Angular2:如何从父组件传递给孩子?
这里是我的index.html
<html>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
</head>
<!-- 3. Display the application -->
<body>
<my-app>Loading...</my-app>
</body>
</html>
app.module.ts
@NgModule({
imports: [
BrowserModule,
FormsModule,
AppRoutingModule
],
declarations: [
AppComponent,
LoginComponent,
HomeComponent,
NewsfeedComponent,
TopBarComponent,
SideMenuComponent
],
providers : [
AuthGaurd
],
bootstrap: [
AppComponent
] })
export class AppComponent {}
home.component.ts
@Component({
selector: 'home',
moduleId: module.id,
templateUrl: 'home.component.html',
providers : [
LoginService
]
})
export class HomeComponent implements OnInit{
isLoggedin : boolean;
constructor (private loginService : LoginService) { }
ngOnInit(): void {
this.loginService.getLogged().subscribe((isLoggedIn: boolean) => {
this.isLoggedin = isLoggedIn;
}); }
}
home.component.html
<side-menu *ngIf='isLoggedin'></side-menu>
<top-bar *ngIf='isLoggedin'></top-bar>
<router-outlet></router-outlet>
auth.gaurd.ts
@Injectable()
export class AuthGaurd implements CanActivate{
constructor(private router : Router) {
}
canActivate(){
if (localStorage.getItem('isLogin')){
return true;
}
this.router.navigate(['/login'])
return false;
}
}
个
login.service.ts
@Injectable()
export class LoginService {
private subject: Subject<boolean> = new Subject<boolean>();
constructor(private router : Router) {
}
login(){
this.setLogged(true);
localStorage.setItem("isLogin","true");
this.router.navigate(['/news-feed']);
}
logout(){
this.setLogged(false);
localStorage.removeItem("isLogin");
this.router.navigate(['/login']);
}
getLogged(): Observable<boolean> {
return this.subject.asObservable();
}
setLogged(val : boolean): void {
this.subject.next(val);
}
}
login.component.ts
@Component({
selector: 'login',
moduleId: module.id,
templateUrl: 'login.component.html'
})
export class LoginComponent {
constructor (private loginService : LoginService) {
}
login(){
this.loginService.login()
}
}
login.component.html
<input type="number” #mobileNumber />
<input type="password" #password />
<input type="button" (click)="login()">
newsfeed.component.ts
@Component({
selector: 'newsfeed',
moduleId: module.id,
templateUrl: 'newsfeed.component.html',
})
export class NewsfeedComponent {
}
newsfeed.component.html
一些HTML文本.... !!!!
APP-routing.module.ts
@NgModule({
imports: [
RouterModule.forRoot([
{
path : 'login',
component : LoginComponent
},
{
path : 'news-feed',
component : NewsfeedComponent,
canActivate : [AuthGaurd]
},
{
path : '',
redirectTo : '/news-feed',
pathMatch : 'full'
}
{
path: '**',
component: LoginComponent
}
])
],
exports: [
RouterModule
]
})
export class AppRoutingModule {}
其实它的正常工作,当我与点击去。像它的发射完美比点击登录按钮它转发给新闻源并显示预期的结果。但是当我从浏览器url,它没有加载侧栏和顶部的酒吧组件从我遇到这个问题的home.html
您需要使用共享服务与路由器https://angular.io/docs/ts/latest/cookbook/component-communication.html#!#bidirectional-service添加组件通信 –
我试过这个。它在点击时工作正常,但在浏览器网址时无法正常工作。 –
您需要提供更多信息。我不知道你想要完成什么,或者你尝试了什么,或者问题可能出在哪里。 –