2

我正在从后端（api）获取 json 数据。我想用 ngFor 显示这个。我从控制台收到一条错误消息，例如： “找不到不同的支持对象 '[object Object]'” 。

后来我试过这个：

@Pipe({
    name: 'mapToIterable'
})
export class MapToIterable implements PipeTransform{
    transform(map: {}, args: any[] = null): any {
        if (!map)
            return null;
        return Object.keys(map)
            .map((key) => ({ 'key': key, 'value': map[key] }));
    }
}

然后在我看来：

 <li *ngFor="let detail of getEventDetails | mapToIterable">
            Creator Email: {{detail.creator.email}}
     </li>

这次我没有收到错误，但没有显示值{{detail.creator.email}}

来自后端的数据

 {
        "banner_image": null, 
        "categories": [], 
        "creator": {
            "email": "email@email.com", 
            "first_name": "Prince", 
            "gender": true, 
            "id": 15, 
            "last_name": "Odame", 
            "subscribed_categories": [], 
            "watchlist": []
        }, 
        "creator_id": 15, 
        "description": "Learn how to install solar panels in 3 days and make real money all your lifetime", 
        "faqs": [], 
        "id": 6, 
        "is_verified": true, 
        "max_tickets_per_user": 1, 
        "shows": [
            {
                "address": "Engineering Auditorium, College of Engineering, KNUST, Kumasi", 
                "city": "Kumasi", 
                "country": "Ghana", 
                "end_time": "2016-08-03T14:30:00+00:00", 
                "event_id": 6, 
                "id": 5, 
                "is_online": false, 
                "start_time": "2016-08-01T08:30:00+00:00", 
                "state": "Ashanti", 
                "ticket_types": [], 
                "venue": "Engineering Auditorium"
            }
        ], 
        "tags": [], 
        "title": "Solar Panels Installation Workshop"
    }

提前致谢

4

1 回答 1

5

您可能只想这样做：

<li>Creator Email: {{getEventDetails.creator.email}}</li>

对于数组：

<li *ngFor="let show of getEventDetails?.shows">
   Show ID: {{show.id}}
</li>
于 2016-07-12T08:45:38.187 回答