[英]How to convert JSON array from REST API to an object
From my backend I receive message like this: 我从后端收到如下消息:
[
[
{
"id": 1,
"date": "2018-12-31"
},
{
"id": 12,
"standard": null,
"capacity": 7,
"description": null,
}
],
[
{
"id": 26,
"date": "2018-12-08"
},
{
"id": 11,
"standard": null,
"capacity": 7,
"description": null,
}
]
]
I want to map this response to list of 2 objects, so I created class: 我想将此响应映射到2个对象的列表,所以我创建了类:
export class Response {
id: string;
date: string;
standard: string;
capacity: number;
description: string;
}
I my method, where I calling a service I tried different methods, and even backendData.forEach doesn't work - Angular doesn't recognize backendData as an array. 在我的方法中,我在调用服务时尝试了不同的方法,甚至backendData.forEach也无法正常工作-Angular无法将backendData识别为数组。
getData(){
this.service.getData().subscribe(backendData=>{
//how to convert backendData to an array of Response[]?
})
}
I will be very grateful for every help I have been stuck with this for couple of time. 我会很感激我在此期间所遇到的每一次帮助。
Maybe it helps 也许有帮助
getData(){
this.service.getData().subscribe(backendData=> {
//how to convert backendData to an array of Response[]?
return backendData.map(array => Object.assign(array[0], array[1]))
})
}
I'm not sure that you really can convert to Response type this array, because your id
is string, but in response you got number, also you got nullable description
and standard
in response 我不确定您是否真的可以将这个数组转换为Response类型,因为您的
id
是字符串,但是在响应中您得到了数字,在响应中您也得到了可为空的description
和standard
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