I need to extract the ServiceProvider number from a REST call response and use it in my code. This is the current output of the call:
{"mitId": 18,
"ServiceProvider": "2"}
This is my current function:
GetServiceProviderId() {
var spid = this.http.get<Info>(this.rooturl + 'info', { headers: this.reqHeader})
return spid;
}
How can I specifically retrieve only the ServiceProvideNumber, which is "2", for use in another call?
Obtain an observable by calling the method GetServiceProviderId like so:
GetServiceProviderId() {
return this.http.get<Info>(this.rooturl + 'info', { headers: this.reqHeader});
}
To receive and process the response value, you can subscribe to it at any desired location in your code:
GetServiceProviderId.subscribe(res => {
console.log(res);
//The id will be displayed here
})
After some consideration, I came up with the following solution:
fetchServiceProviderId(): Observable<Info> {
return this.http.get<Info>(this.rooturl + 'info', { headers: this.reqHeader })
}
This method simply retrieves the JSON request which I then manipulate using pipe and flatMap to extract the '2'.
fetchInstallation(): Observable<Installation[]> {
return this.fetchServiceProviderId().pipe(
flatMap(info => {
return this.http.get<Installation[]>
(this.rooturl +
"url/?serviceproviderid=" +
info.ServiceProviderId
})
)
}
As a result, an API call will be made to api/url/?serviceproviderid=2
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