Angular2.如何在检查访问后隐藏(无渲染)菜单中的链接？

检查ACL访问后,需要根据“routerLink”隐藏菜单中的链接.我不想在app中的每个元素链接上使用angular指令“* ngIf”(需要在routerConfig定义上做全局)

内容可以在组件上使用注释@CanActivate进行控制,但需要隐藏菜单中的链接

我试着用覆盖“routerLink”指令来做,但是在这个指令中,覆盖后无法访问我在routerConfig中定义的扩展参数(资源和特权)

例：

@Component({})
@RouteConfig([{   
    path: '/dashboard',name: 'Dashboard',component: DashboardComponent,data: {'resource':'account','privilage':'show'} 
}])

但无法访问“routerLink”中的此配置数据(routerData).

有些想法怎么做？

第二版

多级菜单和stiil在从routerConfig定义访问(扩展数据配置)时遇到问题.

主要部分

@RouteConfig([
    { path:'/dashboard',name: 'DashboardLink',data: { res: 'dasboard',priv: 'show'},useAsDefault: true },{ path:'/user/...',name: 'UserLink',component: UserComponent,data: { res: 'user',priv: 'show'} },])

@Component({
    selector: 'main-app',template: `
            <ul class="left-menu">
                <li><a secured [routerLink]="['UserLink']">User</a>
                    <ul>
                        <li><a secured [routerLink]="['ProfileLink']">Profile</a></li>
                    </ul>
                </li>
                <li><a secured [routerLink]="['HomeLink']">Home</a></li>
                <li><a secured [routerLink]="['DashboardLink']">Dashboard</a></li>
            </ul>

            <router-outlet></router-outlet>
    `
})
export class MainComponent {

}

用户组件

@RouteConfig([
    { path: '/profile',name: 'ProfileLink',component: ProfileComponent,data: {res: 'user',priv: 'details'} },])
@Component({ ... })
export class UserComponent {
}

档案组件

@Component({ ... })
export class ProfileComponent {

}

我的安全指令

@Directive({
    selector: '[secured]'
})
export class SecuredDirective {

    @Input('routerLink')
    routeParams: any[];

    /**
     * 
     */
    constructor(private _viewContainer: ViewContainerRef,private _elementRef: ElementRef,private router:Router) {
    }

    ngAfterViewInit(){
        //Get access to the directives element router instructions (with parent instructions)
        let instruction = this.router.generate(this.routeParams);
            //Find last child element od instruction - I thing thats my component but I am not sure (work good with two levels of menu)
            this.getRouterChild(instruction);
    }

    private getRouterChild(obj: any){
        var obj1 = obj;
        while(true) {
            if( typeof obj1.child !== 'undefined' && obj1.child !== null ){
                obj1 = obj1.child;
            } else {
                break;
            }  
        }
        this.checkResPrivAcl(obj1.component.routeData.data)
    }
    private checkResPrivAcl(aclResAndPriv: any){

        let hasAccess = CommonAclService.getInstance().hasAccess(aclResAndPriv['res'],aclResAndPriv['priv']);

        if (!hasAccess) {
            let el : HTMLElement = this._elementRef.nativeElement;
            el.parentNode.removeChild(el);   
        }

        console.log("CHECK ACL: " + aclResAndPriv['res'] + " | " + aclResAndPriv['priv']);
    }
}

此解决方案仅适用于菜单的子项不适用于主菜单级别,并且不确定这在多级菜单上是否正常工作.

我尝试了不同的方法来解决这个问题我尝试在指令中访问RouterConfig定义(和我的routerData扩展配置)并使用@Input(‘routerLink’)通过链接的别名来检查元素,但是没有找到怎样才能我可以访问RouterConfig.

@Directive({
  selector: '[secured]'
})
export class Secured {
  constructor(private routerLink:RouterLink,private eltRef:ElementRef) {
    (...)
  }
}

@Component({
  selector: 'app',template: `
    <router-outlet></router-outlet>
    <a secured [routerLink]="['./Home']">Home</a>
  `,providers: [ ROUTER_PROVIDERS ],directives: [ ROUTER_DIRECTIVES,Secured ],pipes: []
})
@RouteConfig([
  {
    path: '/home',name: 'Home',component: HomeComponent,useAsDefault: true,data: {'resources':'account','privilages':'show'} 
  },(...)
])
export class ...

export class Secured {
  @HostBinding('hidden')
  hideRouterLink:boolean;

  constructor(private routerLink:RouterLink) {
  }

  ngAfterViewInit()
    var data = this.routerLink._navigationInstruction.component.routeData.data;
    this.hideRouterLink = this.shouldBeHidden(data);
  }

  (...)
}

export class Secured {
  @HostBinding('hidden')
  hideRouterLink:boolean;

  @Input('routerLink')
  routeParams:string;

  constructor(private router:Router) {
  }

  ngAfterViewInit() {
    var instruction = this.router.generate(this.routeParams);
    var data = instruction.component.routeData.data;
    this.hideRouterLink = this.shouldBeHidden(data);
  }

  (...)
}