Hello,
my backend call is fired twice when I call the post method.
What is wrong here?
private post(url: string, body: any, options: RequestOptionsArgs) {
const getRequest = () => this.http.post(url, body, options);
// First try backend call
const response = getRequest();
const result = response
.filter(res => res.status === 200 && !this.isSessionExpired(res))
.map(res => res.json());
//Session expired
const sessionExpired = response
.filter(res => (res.status === 200) && this.isSessionExpired(res))
.mergeMap((res) => {
let message = new MyMessage();
message.text = 'Session expired';
return Observable.throw(message);
});
return Observable
.merge(
result,
sessionExpired
).catch((err) => {
if (!(err instanceof MyMessage)) {
let message = new MyMessage();
message.text = 'Other failure';
return Observable.throw(message);
}
return Observable.throw(err);
});
}