I'm trying to make an api call passing an array of id
in my page.ts:
this.myService.getPassingID(['1', '2'])
.subscribe((val) => console.log("val", val))
in my service:
getPassingID(id): Observable<any>{
let params = new HttpParams()
.set("id", id)
let url = apiURL
return this.http.get(url, {params});
}
I have tried in this way but I receive 500 error. How can I pass array in api call?
You can pass it in two ways.
#1 Stringify the array while passing it into params and then send it to the HTTP call
let params = new HttpParams().set("id", JSON.stringify(id));
This needs you to parse the respective param at your receiving API backend.
JSON.parse(params.id)
and use it further.
#2 Append all the elements of the array as comma(,) separated values into the id param.
let params = new HttpParams();
params = params.append('id', id.join(','));
This can be accessed and split on comma(,) at the backend.
let idArray = params.id.split(',');
and use it further.