angular - 如何在角度数组类型的变量中设置响应？

Question

我想将响应数据存储在来自 API 响应的变量中，并将其显示在 component.html 文件中。

组件.ts 文件：

public coinsHistory = [];
this.service.getCoinsHistory().subscribe(
    (response) => {
        this.handleCoinsResponse(response);
    },
    (error) => {
        console.log(error);
    }
);
handleCoinsResponse(response: any) {
    console.log('what  ------', response);
    this.spinner.show();
    if (response.status === 1) {
        this.coinsHistory = response.responseData.data;
        console.log(' this.coinsHistory ------', typeof(this.coinsHistory));
    }
}

在 component.html 文件中：

<div *ngFor="let coinData of coinsHistory">
    <p>{{ coinData.coins_earned_for }}</p>
    <p>{{ coinData.referral_coins }}</p>
</div>

来自api的数据是这样的：

status: 1
msgCode: 224
msg: "Referrer coins history"
responseData:
    total_coins: 200
    data: Array(2)
        0:
            id: 85
            referrer_id: 4
            referee_id: null
            coins_earned_for: "Deducted for withdraw"
            referral_coins: "-100"
            created_at: "2020-02-01 12:18:21"
            updated_at: "2020-02-01 12:18:21"

        1:
            id: 85
            referrer_id: 4
            referee_id: null
            coins_earned_for: "Deducted for withdraw"
            referral_coins: "-100"
            created_at: "2020-02-01 12:18:21"
            updated_at: "2020-02-01 12:18:21"

但我得到错误说：

Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables such as Arrays.

标签： angulartypescript

Answer 1

尝试使用模型而不是任何模型来定义响应，例如：

export interface ICoinsHistory{
totalCoins: number;
data: ICoin[];
}
export interface ICoin{
//...Coin data
}