Angular 5并没有找到类型为'object'的另一个支持对象'[object Object]'. NgFor仅支持绑定到数组等Iterables [英] Angular 5 annot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables such as Arrays
问题描述
我正在尝试从我的后端api返回产品并将其显示在我的前端页面上.当我执行* ngFor循环时,它给了我一个错误.这是我的代码.
i am trying to return products from my backend api and display it on my frontend page. When i execute the *ngFor loop it gives me an error. Here are my codes.
我的后端API
data
0
name "perferendis"
totalPrice 323.76
rating 5
discount 43
href
link "http://localhost:8000/api/products/1"
1
name "non"
totalPrice 92.34
rating 3.5
discount 19
href
link "http://localhost:8000/api/products/2"
2
name "a"
totalPrice 246.76
rating 3
discount 38
href
"http://localhost:8000/api/products/3"
3
name "vitae"
totalPrice 537.57
rating "No rating yet"
discount 1
href
link "http://localhost:8000/api/products/4"
links
first "http://localhost:8000/api/products?page=1"
last "http://localhost:8000/api/products?page=3"
prev null
next "http://localhost:8000/api/products?page=2"
meta
current_page 1
from 1
last_page 3
path "http://localhost:8000/api/products"
per_page 20
to 20
total 60
我的服务
getProducts(): Observable<any> {
return this.http.get('http://localhost:8000/api/products')
.map(res => {
return res;
});
我的组件
products: Products[];
constructor(private productservice: ProductService) { }
ngOnInit() {
this.productservice.getProducts()
.subscribe(res => this.products = res);
}
}
当我使用products属性在html文件中执行for循环时,它将返回此错误. 错误:找不到类型为'object'的其他支持对象'[object Object]'.NgFor仅支持绑定到Iterables,例如数组."我需要纠正什么?以及如何正确显示产品对象?
when i do a for loop in my html file with the products property it returns this error. "Error: Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables such as Arrays." What do i need to correct? And how do i get the products object properly displayed?
修改
<li class="span4" *ngFor="let product of products">
那是我的ngFor循环.
that is my ngFor loop.
推荐答案
在您的服务中,您将返回仅具有一个属性data
的对象,该属性仍然是对象,而不是数组.
In your service, you are returning an object with only one property data
, which is still an object, not an array.
尝试返回res.data
:
getProducts(): Observable<Products[]> {
return this.http.get('http://localhost:8000/api/products')
.map(res => {
return res.data;
})
这篇关于Angular 5并没有找到类型为'object'的另一个支持对象'[object Object]'. NgFor仅支持绑定到数组等Iterables的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!