从json我得到了这个:
{
"name": "Leonardo",
"weapon": "sword"
},
{
"name": "Donatello",
"weapon": "stick"
},
{
"name": "Michelangelo",
"weapon": "nunchucks"
},
{
"name": "Raphael",
"weapon": "sai"
}
但是对于模板我想动态插入一个额外的字段:
{
"name": "Leonardo",
"weapon": "sword"
"is_leader": "true"
},
{
"name": "Donatello",
"weapon": "stick"
"is_leader": "false"
},
{
"name": "Michelangelo",
"weapon": "nunchucks"
"is_leader": "false"
},
{
"name": "Raphael",
"weapon": "sai"
"is_leader": "false"
}
但我甚至无法获得组件来返回observable(表示它未定义,但在模板中呈现正常)。到目前为止,我已经在我的组件中有这个。
constructor(private dataService: DataService) {
this.dataSubscription = this.dataService.getTestData().subscribe(res => this.allData = res);
}
答案 0 :(得分:2)
您应该修改 fetch(url, headers)
.then(response => response.text())
.then(text => {
resolve(this._parseResponse(text, url));
})
.catch(error => reject({ error }));
以下是您将如何实现当前给定代码的逻辑:
.map()
答案 1 :(得分:0)
使用Angular 4.3+附带的HttpClient
,您可以使用拦截器(HttpIntercept
)来拦截,过滤和/或修改传入的JSON Feed。一些谷歌搜索显示如何设置拦截器并使用它们,例如here。