圆环中的角2路链路

Question

尝试使用下面的代码创建菜单

​

<aside id="left-panel">
	<span class="minifyme"> <i class="fa fa-arrow-circle-left hit"></i>
	</span>
	<nav>
		<ul>
			<li *ngFor="#menu of menus" [class.open]="menu === selectedMenu"
				(click)="onSelect(menu)"><a [routerLink]="[menu.action]"> <i
					class={{menu.icon}}></i> <span class="menu-item-parent">{{menu.displayname}}</span>
					<b *ngIf="menu.childrens.length>0"> <em class="fa"
						[ngClass]="{'fa-minus-square-o': menu === selectedMenu, 'fa-plus-square-o': menu !== selectedMenu}"></em>
				</b>
			</a>

				<ul *ngIf="menu.childrens" [class.show]="menu === selectedMenu">
					<li *ngFor="#submenu of menu.childrens" (click)="onSelect(menu)">
						<a> {{submenu.displayname}} </a>
					</li>
				</ul></li>
		</ul>
	</nav>
</aside>

​

​

import {Component, OnInit} from 'angular2/core';
import {Router} from 'angular2/router';
import {RouteConfig,RouterLink, ROUTER_DIRECTIVES} from 'angular2/router';
import {MenuService} from './menu.service';
import {Menu} from './menu';


@Component({
  selector: 'my-menu',
  templateUrl: 'app/menu/menu.component.html',
  directives: [ROUTER_DIRECTIVES,RouterLink,RouteConfig]
})
export class MenuComponent implements OnInit {
  public menus: Menu[];
    public selectedMenu: Menu;
   
    constructor(private _menuService: MenuService) { }
    getMenus() {
        this._menuService.getMenus().then(menus => this.menus = menus);
    }
    ngOnInit() {
        this.getMenus();
    }
     onSelect(menu: Menu) { this.selectedMenu = menu; }
}

Getting following error, please suggest

​

例外情况:在RuntimeMetadataResolver.getViewDirectivesMetadata的DecoratorFactoryBrowserDomAdapter.logError @ angular2.dev.js:23083 angular2.dev.js:23083 STACKTRACE:BrowserDomAdapter.logError @ angular2.dev.js:23083 angular2.dev.js:23083错误上没有发现指令注释:在DecoratorFactory at new BaseException (https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:7351:21) at DirectiveResolver.resolve (https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:6654:13) at RuntimeMetadataResolver.getDirectiveMetadata (https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:22303:47) at https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:22371:22 at https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:22371:22 at Array.map ( Array.map ) at Array.map(https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:22371:22)at Array.map(https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:22371:22)在C7https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:24329:63) at https://code.angularjs.org/2.0.0-beta.7/angular2.dev.js:24314:26 at Array.forEach (原生)

Answer 1

您不应该在组件的指令属性中使用RouteConfig，因为它不是指令，而是修饰器。

您可以注意到，RouterLink指令包含在ROUTER_DIRECTIVES中。

使用这个应该就足够了：

directives: [ ROUTER_DIRECTIVES ]

此外，您需要使用@RouteConfig装饰器在组件上配置路由：

@Component({
  selector: 'my-menu',
  templateUrl: 'app/menu/menu.component.html',
  directives: [ROUTER_DIRECTIVES,RouterLink,RouteConfig]
})
@RouteConfig({
  (...)
})
export class MenuComponent implements OnInit {
  (...)
}

请查看此链接，以了解如何配置该链接：

• https://angular.io/docs/ts/latest/guide/router.html