Question

我正在按姓名搜索数据正常，然后尝试获取搜索产品的详细信息（从产品数组中访问单个产品详细信息）。数据将显示在控制台中，但不会显示在我的HTML视图中。这里我的组件代码

export class SearchdetailComponent implements OnInit {
  @Input() product: Product;

    ngOnInit() {
          this.getComponent();
       }
    goBack(): void {
    this.location.back();
  }
 private componentUrl = 'HereMyRestServicePostUrlGoes';
  constructor(private http:Http, private route: ActivatedRoute,
    private location: Location) {
     }

   getComponent(): Observable<Product[]> {
    const name = this.route.snapshot.paramMap.get('name');
    let obj = { name: name }
       let body = JSON.stringify(obj);
      let headers = new HttpHeaders();
         var config = {
                    headers : {
                        'Content-Type': 'application/json'
                    }
                };
      headers = headers.append('Content-Type' : 'application/json');
      const url = `${this.componentUrl}`;
      return this.http.post<Product[]>(url, body, config).map((res:Response) => res.json()).subscribe(product => { 
            this.product = product; 
            console.log(this.Product);
              );
            }
  }
}

HTML代码

<div class="wide">
</div>
<div class="hero-bkg-animated">
<h2>Product Details</h2>
<form class="form-style-9">
<div >

  <div>
<div class="table-responsive">    
<table *ngIf="product" class="table table-striped">
  <tr><td><b>Name</b></td><td>{{product.name}}</td></tr>
   <tr><td><b>Address</b></td><td>{{product.address}}</td></tr>
  </table>
  </div>
  <button (click)="goBack()">Go Back</button>
</div>
</div>
</form>
</div>

路由器代码：

 { path: 'detail/:name', component: SearchdetailComponent }

Console

Answer 1

*ngIf="product"

除非product是布尔值，否则这并不意味着什么。

你需要在像这样的属性上使用if条件

<div >
    <table *ngFor="let p of product" class="table table-striped">
      <tr *ngIf="p.name.length>0"><td><b>Name</b></td><td>{{p.name}}</td></tr>
       <tr *ngIf="p.address.length>0"><td><b>Address</b></td><td>{{p.address}}</td></tr>
      </table>

在控制台中获取数据但不在angular4中的html视图中获取数据

1 个答案: