Angular 2-相当于路由器为新路由器解析数据

Question

我正在使用Angular 2.0的new router，并尝试使用类似于Angular 1.X ui路由器/ng路由解析机制的机制。

我试图使用RouteData:来实现这一点

import {Component, ViewEncapsulation} from 'angular2/core';
import {
  RouteConfig,
  ROUTER_DIRECTIVES
} from 'angular2/router';
// import {HTTP_PROVIDERS} from 'angular2/http';
import {HomeCmp} from '../home/home';
import {AboutCmp} from '../about/about';
import {NameList} from '../../services/name_list';
import {PersonalizationList} from '../../services/personalization_list';
@Component({
  selector: 'app',
  viewProviders: [NameList, PersonalizationList],
  templateUrl: './components/app/app.html',
  styleUrls: ['./components/app/app.css'],
  encapsulation: ViewEncapsulation.None,
  directives: [ROUTER_DIRECTIVES]
})
@RouteConfig([
  { path: '/', component: HomeCmp, as: 'Home', data: this.history },
  { path: '/about', component: AboutCmp, as: 'About' }
])
export class AppCmp {
  history: string[] = [];
  constructor(public list: PersonalizationList) {
    list.get('histoy', (response) => {
      this.history = response;
    });
  }
}

使用此（home）的组件：

import {Component} from 'angular2/core';
import {PersonalizationList} from '../../services/personalization_list';
import {Router, ROUTER_DIRECTIVES, routerBindings, RouteConfig, RouteData} from 'angular2/router';
@Component({
  selector: 'home',
  templateUrl: './components/home/home.html',
  styleUrls: ['./components/home/home.css'],
  directives: [ROUTER_DIRECTIVES]
})
export class HomeCmp {
  constructor(data: RouteData) {
    console.log(data);
  }
}

记录到控制台的数据不是我从服务中初始化的数据。如果我直接在@RouteConfig中初始化它，它就会工作。例如：

@RouteConfig([
  { path: '/', component: HomeCmp, as: 'Home', data: [1,2,3,4] },
  { path: '/about', component: AboutCmp, as: 'About' }
])

因此，我错过了将数据从控制器/组件传递到@RouteConfig的部分。

另一个问题——在Angular 1.X中，通过路由器的解析将数据传递到路由是一种很好的做法。使用new router/components router以这种方式将数据传递给组件，这仍然是一种好的做法吗？

编辑解决方案可以在这里找到-使用@CanActivate事件

Answer 1

您必须将@RouteConfig移动到AppCmp构造函数中：

//@RouteConfig([
//  { path: '/', component: HomeCmp, as: 'Home', data: this.history },
//  { path: '/about', component: AboutCmp, as: 'About' }
//])
export class AppCmp {
  history: string[] = [];
  constructor(public list: PersonalizationList,
              private router_: Router) {
    list.get('histoy', (response) => {
      this.history = response;
    });
    router_.config([
      { path: '/', component: HomeCmp, as: 'Home', data: this.history },
      { path: '/about', component: AboutCmp, as: 'About' }
    ]);
  }
}

在控制台输出上，我可以看到：

RouteData｛data:"测试样本"｝

希望它能有所帮助！

Answer 2

更新

@Injectable()
export class CrisisDetailResolve implements Resolve<Crisis> {
  constructor(private cs: CrisisService, private router: Router) {}
  resolve(route: ActivatedRouteSnapshot): Promise<Crisis>|boolean {
    let id = route.params['id'];
    return this.cs.getCrisis(id).then(crisis => {
      if (crisis) {
        return crisis;
      } else { // id not found
        this.router.navigate(['/crisis-center']);
        return false;
      }
    });
  }
}

  children: [
  {
    path: ':id',
    component: CrisisDetailComponent,
    canDeactivate: [CanDeactivateGuard],
    resolve: {
      crisis: CrisisDetailResolve
    }
  },

ngOnInit() {
  this.route.data
    .subscribe((data: { crisis: Crisis }) => {
      this.editName = data.crisis.name;
      this.crisis = data.crisis;
    });
}

https://angular.io/docs/ts/latest/guide/router.html##解析保护

原始

RC.4中的新路由器解决了添加的问题

resolve是用于查找数据解析器的DI令牌的映射。有关详细信息，请参阅解决。

class TeamResolver implements Resolve {
  constructor(private backend: Backend) {}
  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot):Observable<any> {
    return this.backend.fetchTeam(this.route.params.id);
  }
}
bootstrap(AppComponent, [
  TeamResolver,
  provideRouter([{
    path: 'team/:id',
    component: TeamCmp,
    resolve: {
      team: TeamResolver
    }
  }])
);

另请参阅RouterConfig