this.router.navigate 在 Guard 中,将来会阻止路由
this.router.navigate in Guard blocks routes in future
我在 Angular 4 中设置了两个守卫 -- 一个在用户尝试到达受保护的路由时将用户重定向到登录页面,另一个将用户从 [=30 重定向到欢迎页面=] 如果他们还没有去过那里。
守卫本身工作得很好......但我注意到一些非常奇怪的行为。通过 this.router.navigate
在 WelcomeTraveler 守卫中添加重定向使应用程序处于无法从 first 守卫访问受保护路由的状态,即使在登录后也是如此。我只是保持被送回主页。
这是我的守卫:
export class AuthGuardLoggedInUser implements CanActivate {
private isLoggedIn: boolean;
private working: boolean;
constructor (@Inject(Store) private _store:Store<AppStore>, @Inject(Router) private _router: Router)
{
_store.select(state => state.AuthNState).subscribe(auth =>
{
this.isLoggedIn = auth.connected
this.working = auth.working
})
}
canActivate() {
if (this.working)
{
let promise: Promise<boolean> = new Promise((resolve, reject) => {
let sub = this._store.select(state => state.AuthNState).subscribe(auth =>
{
if (!auth.working) {
resolve(auth.connected)
sub.unsubscribe()
if (!auth.connected) this._router.navigate(['/i/login']);
}
})
});
return promise
}
else if (this.isLoggedIn){
return true
}
else {
this._router.navigate(['/i/login']);
}
export class WelcomeTraveler implements CanActivate {
private hasAlreadyVisitedWelcomePage: boolean;
private isLoggedIn: boolean;
private working: boolean;
constructor (@Inject(Store) private _store:Store<AppStore>, @Inject(Router) private _router: Router)
{
_store.select(state => state.AuthNState).subscribe(auth =>
{
this.isLoggedIn = auth.connected
this.working = auth.working
})
}
canActivate() {
if (this.working)
{
let promise: Promise<boolean> = new Promise((resolve, reject) => {
let sub = this._store.select(state => state.AuthNState).subscribe(auth =>
{
if (!auth.working) {
resolve(auth.connected)
sub.unsubscribe()
this.hasAlreadyVisitedWelcomePage = true
this._router.navigate(['/i/welcome']);
}
})
});
return promise
}
else if (this.isLoggedIn){
return true
}
else if (!this.hasAlreadyVisitedWelcomePage){
this.hasAlreadyVisitedWelcomePage = true
this._router.navigate(['/i/welcome']);
}
else return true
}
}
这是路由的片段 table:
export var AppRoutes = RouterModule.forRoot([
{
path: '',
component: HomeComponent,
canActivate: [WelcomeTraveler]
}, {
path: 'i/getstarted',
component: GetStartedPageComponent,
canActivate: [AuthGuardLoggedInUser]
}, {
path: 'i/login',
component: LoginPageComponent
}, {
path: 'i/profile',
component: ProfilePageComponent,
canActivate: [AuthGuardLoggedInUser]
}, {
path: 'i/welcome',
component: WelcomePageComponent
}])
this.router.navigate
在 WelcomeTraveler
守卫中的存在似乎导致了问题,即使这些线从未被击中!登录后,我在尝试路由到个人资料(成功通过第一个守卫之后)后立即被送回 'Home'。如果我删除导航线 - 问题就会消失。
有什么想法吗?
正如经常发生的那样,我走错了路。对于那些可能已加注星标或对此投赞成票的人,我建议您检查您可能拥有的任何调用 router.navigate
的订阅——就我而言,我未能在我的 [=16 上清理这些订阅=] 组件...所以一旦订阅被初始化,任何时候状态更新我都会被重定向到主页。
固定如下:
export class LoginPageComponent implements OnDestroy {
private _redirectSubscription: Subscription;
constructor (private _store:Store<AppStore>, private router: Router) {
this._redirectSubscription = _store.select((state) => state.AuthNState).subscribe((auth) =>
{
if (auth.connected) this.router.navigate(['']);
})
}
ngOnDestroy() {
//Called once, before the instance is destroyed.
//Add 'implements OnDestroy' to the class.
this._redirectSubscription.unsubscribe();
}
}
我在 Angular 4 中设置了两个守卫 -- 一个在用户尝试到达受保护的路由时将用户重定向到登录页面,另一个将用户从 [=30 重定向到欢迎页面=] 如果他们还没有去过那里。
守卫本身工作得很好......但我注意到一些非常奇怪的行为。通过 this.router.navigate
在 WelcomeTraveler 守卫中添加重定向使应用程序处于无法从 first 守卫访问受保护路由的状态,即使在登录后也是如此。我只是保持被送回主页。
这是我的守卫:
export class AuthGuardLoggedInUser implements CanActivate {
private isLoggedIn: boolean;
private working: boolean;
constructor (@Inject(Store) private _store:Store<AppStore>, @Inject(Router) private _router: Router)
{
_store.select(state => state.AuthNState).subscribe(auth =>
{
this.isLoggedIn = auth.connected
this.working = auth.working
})
}
canActivate() {
if (this.working)
{
let promise: Promise<boolean> = new Promise((resolve, reject) => {
let sub = this._store.select(state => state.AuthNState).subscribe(auth =>
{
if (!auth.working) {
resolve(auth.connected)
sub.unsubscribe()
if (!auth.connected) this._router.navigate(['/i/login']);
}
})
});
return promise
}
else if (this.isLoggedIn){
return true
}
else {
this._router.navigate(['/i/login']);
}
export class WelcomeTraveler implements CanActivate {
private hasAlreadyVisitedWelcomePage: boolean;
private isLoggedIn: boolean;
private working: boolean;
constructor (@Inject(Store) private _store:Store<AppStore>, @Inject(Router) private _router: Router)
{
_store.select(state => state.AuthNState).subscribe(auth =>
{
this.isLoggedIn = auth.connected
this.working = auth.working
})
}
canActivate() {
if (this.working)
{
let promise: Promise<boolean> = new Promise((resolve, reject) => {
let sub = this._store.select(state => state.AuthNState).subscribe(auth =>
{
if (!auth.working) {
resolve(auth.connected)
sub.unsubscribe()
this.hasAlreadyVisitedWelcomePage = true
this._router.navigate(['/i/welcome']);
}
})
});
return promise
}
else if (this.isLoggedIn){
return true
}
else if (!this.hasAlreadyVisitedWelcomePage){
this.hasAlreadyVisitedWelcomePage = true
this._router.navigate(['/i/welcome']);
}
else return true
}
}
这是路由的片段 table:
export var AppRoutes = RouterModule.forRoot([
{
path: '',
component: HomeComponent,
canActivate: [WelcomeTraveler]
}, {
path: 'i/getstarted',
component: GetStartedPageComponent,
canActivate: [AuthGuardLoggedInUser]
}, {
path: 'i/login',
component: LoginPageComponent
}, {
path: 'i/profile',
component: ProfilePageComponent,
canActivate: [AuthGuardLoggedInUser]
}, {
path: 'i/welcome',
component: WelcomePageComponent
}])
this.router.navigate
在 WelcomeTraveler
守卫中的存在似乎导致了问题,即使这些线从未被击中!登录后,我在尝试路由到个人资料(成功通过第一个守卫之后)后立即被送回 'Home'。如果我删除导航线 - 问题就会消失。
有什么想法吗?
正如经常发生的那样,我走错了路。对于那些可能已加注星标或对此投赞成票的人,我建议您检查您可能拥有的任何调用 router.navigate
的订阅——就我而言,我未能在我的 [=16 上清理这些订阅=] 组件...所以一旦订阅被初始化,任何时候状态更新我都会被重定向到主页。
固定如下:
export class LoginPageComponent implements OnDestroy {
private _redirectSubscription: Subscription;
constructor (private _store:Store<AppStore>, private router: Router) {
this._redirectSubscription = _store.select((state) => state.AuthNState).subscribe((auth) =>
{
if (auth.connected) this.router.navigate(['']);
})
}
ngOnDestroy() {
//Called once, before the instance is destroyed.
//Add 'implements OnDestroy' to the class.
this._redirectSubscription.unsubscribe();
}
}