如何在Ionic中打印JSON中的数据

[    {
      "teachers": [
          {
            "img":"assets/inst/J.png",
            "name":"Janine ",
            "bio":"lorem"
          },{
            "img":"assets/insta/I.png",
            "name":"Itzhak",
            "bio":"lorem"
          }
      ]
    }
]

    homeds: Home[];
  constructor( public dataService: DataProvider) {
    this.dataService.fetchData().subscribe(
           (data) => {
             this.homeds = data}  
         )
  }

最后,我的模板文件是

<ion-row class="home" *ngFor="let home of homeds">
 <img src="{{ home.teachers?.img }}" alt="">
</ion-row>