Angular2:如何“重新加载"带路由器的页面(重新检查 canActivate)?

问题描述

我有带有 canActivate: [ AuthGuard ] 和 AuthGuard

如何在同一个路由器url中强制检查canActivate?

How to force check canActivate in same router url ?

例如:当前路由是 /admin 并且我有类似 session expired 的事件.我在 AuthGuard 中有会话检查，但只有当我执行 .navigate(...) 时，这个检查才会激活.如何在同一位置强制运行 canActivate?

For example: Current route is /admin and I have got event like session expired. I have session check in AuthGuard but this check activates only when I execute .navigate(...). How to force run canActivate in same location?

我已经尝试过:this.router.navigate([ this.router.url ]); 但是 angular 检查相同的位置并且什么都不做.

I've tried: this.router.navigate([ this.router.url ]); but angular checks same location and do nothing.

附言当我收到 session expired event 时，我可以定位到登录页面"或其他页面，但我在 AuthGuard 内有所有重定向，我不想在其中重复相同的重定向所有其他事件，我需要像 location.reload() 但在 Angular2 路线中.

p.s. I can locate to "login page" or other pages when I got session expired event, but I have all redirects inside AuthGuard and I do not want to repeat the same redirects in all other events, I need just like location.reload() but in Angular2 routes.

主要问题听起来像:如何在当前位置强制重新运行 canActivate 守卫?

Main question sounds like: How to force rerun canActivate guards in current location?

推荐答案

我的临时解决方案:

auth.service.ts

import { Injectable, Injector } from '@angular/core';
import { ActivatedRoute, Router, RouterStateSnapshot } from '@angular/router';

@Injectable()
export class AuthService {

  constructor(private route: ActivatedRoute,
              private router: Router,
              private injector: Injector) {
    this.forceRunAuthGuard();
  }

  // Dirty hack for angular2 routing recheck
  private forceRunAuthGuard() {
    if (this.route.root.children.length) {
      // gets current route
      const curr_route = this.route.root.children[ '0' ];
      // gets first guard class
      const AuthGuard = curr_route.snapshot.routeConfig.canActivate[ '0' ];
      // injects guard
      const authGuard = this.injector.get(AuthGuard);
      // makes custom RouterStateSnapshot object
      const routerStateSnapshot: RouterStateSnapshot = Object.assign({}, curr_route.snapshot, { url: this.router.url });
      // runs canActivate
      authGuard.canActivate(curr_route.snapshot, routerStateSnapshot);
    }
  }

}

app.routes.ts

  { path: 'faq', canActivate: [ AuthGuard ], component: FaqComponent },
  { path: 'about', canActivate: [ AuthGuard ], component: AboutUsComponent },
  { path: 'upgrade', canActivate: [ AuthGuard ], component: UpgradeComponent },

此代码再次运行 AuthGuard.

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