Angular 6:如何识别forkJoin响应

Question

Angular 6:如何用forkJoin识别api的响应

reqs = [];
if (shouldUpdatePhone) {
   reqs.push(this.customerService.updatePhone(phoneUpdateRequest))
}
if (shouldUpdateAddress) {
   reqs.push(this.customerService.updateAddress(addressUpdateRequest))
}

forkJoin(reqs).subscribe(result => {
   console.log('result :', result);
  //How to know response is from updatePhone and response from updateAddress?
});

如何识别收到的响应属于updatePhone和updateAddress？基于身份识别我需要向用户显示消息.

这两个api返回 Array(2)>

{model:true,code:200,message:null},

{model:true,code:200,message:null}

Answer 1

您可以map在每个请求后使用管道将您的响应包装在另一个标识其类型的对象中.像这样:

reqs = [];
if (shouldUpdatePhone) {
    reqs.push(this.customerService.updatePhone(phoneUpdateRequest)
        .pipe(map(value => ({type: 'phone', value: value})))
        .pipe(catchError(value => of({type: 'phone', failed: true}))))
}
if (shouldUpdateAddress) {
    reqs.push(this.customerService.updateAddress(addressUpdateRequest)
        .pipe(map(value => ({type: 'address', value: value})))
        .pipe(catchError(value => of({type: 'address', failed: true}))))
}

forkJoin(reqs).subscribe(results => {
    console.log('result :', results);

    for(let result of results){
        if(result.type == 'phone'){
            if(result.failed)
                console.log("Phone failed");
            else
                console.log("Phone: " + result.value);
        }

        else if(result.type == 'address'){
            if(result.failed)
                console.log("Address failed");
            else
                console.log("Address: " + result.value);
        }
    }
});