如何在 Angular 中使用 *ngFor 填充响应对象数组数据中的值

Question

I want to display data coming from a backend Api in Angular using *ngFor.But data is coming as an object which contains an array of size 10.This the image of the backend response that shows in console.log(hotels);

This is the angular code which i have written in component.ts file

   hotelInfo = [];
   hotelInfo2 = [];

    getTopHotelInfo() {
        const params = [];
        params.push({code: 'dateType', name: 'CHECKIN'});
        params.push({code: 'fromDate', name: '2018-01-01'});
        params.push({code: 'toDate', name: '2019-01-01'});
        params.push({code: 'topN', name: 10});
        this.dashboardServiceHandler.getTopHotelInfo([], params).subscribe(
          hotels => {
            console.log(hotels);
            this.hotelInfo.push(hotels);
            console.log(this.hotelInfo);
            for (let i = 0; i < this.hotelInfo.length; i++) {
                const hotel = this.hotelInfo[i];
                console.log(hotel);
                /// this.hotelInfo2.push(hotels[i]);
                this.hotelInfo2.push({code: hotel.code, name: hotel.name});
                console.log(this.hotelInfo2[i]);
            }
         });
      }

This is the code which i have written in component.html file

<li *ngFor="let hotel of hotelInfo">
        <div class="c-inbox-widget__item">
          <div class="c-inbox-widget__item__avatar" style="background: #A3A1FB">
            01
          </div>

            <div>
              <span class="c-inbox-widget__item__author">{{hotel.name}}</span>
              <!--<span class="c-inbox-widget__item__text">Canada</span>-->
            </div>

            <div class="c-inbox-widget__item__value">$29,193</div>

        </div>
   </li>

How could I get those data as an array to *ngFor

Answer 1

Try this way. your response is an object and it contains an array with key responseObj .

getTopHotelInfo() {
        const params = [];
        params.push({code: 'dateType', name: 'CHECKIN'});
        params.push({code: 'fromDate', name: '2018-01-01'});
        params.push({code: 'toDate', name: '2019-01-01'});
        params.push({code: 'topN', name: 10});
        this.dashboardServiceHandler.getTopHotelInfo([], params).subscribe(
          hotels => {
            console.log(hotels);
            this.hotelInfo = hotels.responseObj;
         });
      }

Now run ngFor on hotelInfo . It should work as per your response.

Example:

 let obj = { responseObj: [ { name: 'a' }, { name: 'b' }, { name: 'c' } ] }; console.log(obj.responseObj);

Answer 2

You could use keyValue pipe in angular

  <div *ngFor="let hotel of hotelInfo">
    <div *bgFor="let q of hotel | keyvalue>
           {{q.key}} - {{q.value}}
    </div>
  </div>