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Pada tanggal Sen, 26 Okt 2020 14:48, <[email protected]> menulis: > היי חן > > > > אני עשיתי EXPORT לכל DB, שמתי בתיקי בפרוייקט. > > > > מצרפת את התיקיה הזו. > > > > תודה > > > > קטיה > > > > *From:* [email protected] <[email protected]> *On Behalf Of > *[email protected] > *Sent:* Saturday, October 24, 2020 10:55 PM > *To:* Angular and AngularJS discussion <[email protected]> > *Subject:* Re: [Angular] Re: How to call two method sequential > > > > Hi Arnaud, > > Thanks for your reply but this appears to be very complex for me . I am > unable to chain my request. > > > > my first call - > > getsession() in below format > > { > > "error": *null*, > > "sessionID": "XXXXXXXX" > > } > > I need to pick the session ID and then call othe function > > getInformation ( sessionID from above response). > > > > I tried to do the following thing but does not work as I get compile time > error > > > > this.service.getSession().pipe( > > switchMap(data =>{ > > let session = data.sessionID; > > this.serice.getinformation(session ); > > }) > > ) > > I really need correct syntax for it. I struggled with all video from > YouTube but no understanding. > > Regards > > Sandeep Shukla > > > > On Wednesday, October 21, 2020 at 2:17:53 PM UTC+2 Arnaud Deman wrote: > > Hi Sandeep, > > > > The calls to the backend are actually returning Observables. This is > asynchronous, so the second call is probably done before the first > Observable has emitted a value. You can combine the two observables like I > said in my previous answer. Another solution could be to perform the second > call in the subscribe of the first one. If this diagnostic is not correct > perhaps could you provide an minimalist stackblitz or equivalent. > > Regards, > Arnaud. > > > > On Tuesday, 20 October 2020 at 19:28:15 UTC+2 [email protected] wrote: > > Hi Arnaud, > > Thanks for your response. > > I did not understand it completely. The moment I call method in subsequent > request session becomes undefined. Here is the code I am attaching. > > > > sessionId : string = ""; > > this.loginService.getSession(t) > .subscribe(data => { > this.result=JSON.parse(JSON.stringify(data)); > sessionId = this.result; > }, error => { > this.result = JSON.stringify(error).toString(); > }); > // I only want to return result from below method to consumer while > session is created in each request. I cannot store sessionId from > //getSession. I am not sure how to combine them > this.loginService.searchDocument(this.sessionId , bodymsg) > .subscribe(data => { > this.result=JSON.parse(JSON.stringify(data)); > }, error => { > this.result = JSON.stringify(error).toString(); > }); > > > > > > > > Regards > > Sandeep Sjhukla > > > > On Tue, Oct 20, 2020 at 11:40 AM Arnaud Deman <[email protected]> wrote: > > Hello Sandeep, > Assuming the backend calls return Observables, you could do something like > this (untested): > getSession (). pipe ( > mergeMap (sessions => getInformation (session)) > ); > > This would return an Observable of the same type as getInformation > (session). > > > > Regards, > > Arnaud. > > > > > > On Monday, 19 October 2020 at 11:35:49 UTC+2 [email protected] wrote: > > Hi, > > > > I would like to call an service in which I need a session value. I dont > want customer to enter the login details to create the session rather on > page load itself I would like to provide the details. > > > > 1) var session = getSession(); // rest call from backend > > > > 2) var info = getInformation (session) ; //rest call from backend > > > > 3) return infor to cleint > > > > I would like to know how I can do it with one call. It does not work for > me. > > -- > You received this message because you are subscribed to the Google Groups > "Angular and AngularJS discussion" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/angular/d2ffc870-f1cd-4f18-96ca-357bccb163ccn%40googlegroups.com > <https://groups.google.com/d/msgid/angular/d2ffc870-f1cd-4f18-96ca-357bccb163ccn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > > -- > > Regards > Sandeep Shukla, > Mobile# +31647969951 <+31%206%2047969951> > > -- > You received this message because you are subscribed to the Google Groups > "Angular and AngularJS discussion" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/angular/1dd27fe0-8a7e-41b1-9cc5-5a79a09a492fn%40googlegroups.com > <https://groups.google.com/d/msgid/angular/1dd27fe0-8a7e-41b1-9cc5-5a79a09a492fn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "Angular and AngularJS discussion" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/angular/072301d6aae7%242d85d080%2488917180%24%40gmail.com > <https://groups.google.com/d/msgid/angular/072301d6aae7%242d85d080%2488917180%24%40gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Angular and AngularJS discussion" group. 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