Angular2从Odata Controller 获取数据

Question

第一次提问...长期读者/潜伏者... 我正在尝试学习 angular2，但从 odata Controller 获取数据时遇到一些问题。我有一个简单的 Angular 2 应用程序，我试图将从 odata Controller 返回的一些数据加载到 html 中的列表元素中。
这是我的 angular2 界面:

interface Menu {
    id: number;
    name: string;
    route: string;
    decorator: string;
    description: string;
    OldTableId: string;
    TableName: string;
}

这是我的 typescript /Angular 2 组件文件:

    import {
    ROUTER_DIRECTIVES,
    Http,
    Observable,
    MenuService,
    Component, OnInit
} from './index.ts';

@Component({
    selector: 'sidebar-menu',
    template: require('./sidebar-menu.html'),
    directives: [...ROUTER_DIRECTIVES],
    providers: [MenuService]
})
export class SidebarMenu {
    public menus: Menu[];
    public menu2s: Menu[];
    constructor(private _menuService: MenuService) {
    }
    ngOnInit() {
        this._menuService.getMenus()
            .subscribe((menus) => {
                this.menus = menus;
                console.log(val);
               },
            (err) => {
                console.log(err);
                }
            );
   }
}

这是我在 Angular 2 组件的 init 中调用的 Angular2 服务(menuService):

import { Http, Response, Observable, Injectable} from './index.ts'

@Injectable()
export class MenuService {

    constructor(private _http: Http) { }

    getMenus() {
        //return this._http.get('/api/Menu/Menus') - api works fine
        return this._http.get('http://localhost:64157/odata/OldTables')
            .map((response: Response) => response.json())

            .catch(this._handleError);

    } _handleError(err: any) {
        //TODO - Give user a nice error message.
        console.log(err);
        return Observable.throw(err);
    };
    }

}

还有我的 HTML:

<ul class='nav navbar-sidebar'>
    <li>test</li>
    <li>
        <a [routerLink]="['/home']" class="router-link" [routerLinkActive]="['active']">
            <span class='glyphicon glyphicon-home'></span> Home
        </a>
    </li>
    <li *ngFor="let menu of menus" >
        <a [routerLink]="menu.name" class="router-link" [routerLinkActive]="['active']">
            <span class='glyphicon glyphicon-th-list {{menu.decorator}}'></span> {{menu.name}}
        </a>
    </li>
</ul>

我的问题是，当我使用 API Controller 时，它可以工作。现在我已经创建了一个 odata Controller 。当数据记录到控制台 console.log(val); 时，我可以在浏览器中看到数据。从我的组件的 init.但我无法将其显示在屏幕上。最终我想使用 <li *ngFor="let menu of menus" > 中的数据html 页面的。如何获取呈现的 odata Controller 数据？我读过的所有内容都引用了 Web api。

编辑:我正在添加我的 odata Controller 返回的数据示例。

   {
      "odata.metadata":"http://localhost:64157/odata/$metadata#OldTables","value":[
        {
          "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="d699bab295b9baa3bbb8a596b9b2b7a2b7f8b8b7a0bfb1b7a2bfb9b89abfb8bd83a4ba" rel="noreferrer noopener nofollow">[email protected]</a>":"http://localhost:64157/odata/OldTables(15252)/OldColumns","OldTableId":15252,"TableName":"addbook"
        },{
          "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="83ccefe7c0eceff6eeedf0c3ece7e2f7e2adede2f5eae4e2f7eaecedcfeaede8d6f1ef" rel="noreferrer noopener nofollow">[email protected]</a>":"http://localhost:64157/odata/OldTables(15253)/OldColumns","OldTableId":15253,"TableName":"adj01"
        },{
          "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="26694a4265494a534b4855664942475247084847504f4147524f49486a4f484d73544a" rel="noreferrer noopener nofollow">[email protected]</a>":"http://localhost:64157/odata/OldTables(15254)/OldColumns","OldTableId":15254,"TableName":"allcmy201"
        },{
          "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="fdb29199be92918890938ebd92999c899cd3939c8b949a9c89949293b1949396a88f91" rel="noreferrer noopener nofollow">[email protected]</a>":"http://localhost:64157/odata/OldTables(15255)/OldColumns","OldTableId":15255,"TableName":"allfut"
        }
      ]
    }

Answer 1

上面的代码有效，我只是忘记引用返回数据的“值”。 更新了 TS/组件代码:

export class SidebarMenu {
    public menus: Menu[];

    constructor(private _menuService: MenuService) {
    }
    ngOnInit() {
        this._menuService.getMenus()
            .subscribe((menus) => {
                this.menus = menus.value;
                console.log(val.value[0]);
               },
            (err) => {
                console.log(err);
                }
            );
   }
}

然后将我的 html 修改为以下内容:

<ul>
    <li *ngFor="let menu of menus">
        <a [routerLink]="menu.OldTableId" class="router-link" [routerLinkActive]="['active']">
            <span class='glyphicon glyphicon-th-list {{menu.OldTableId}}'></span> {{menu.TableName}}
        </a>
    </li>
</ul>