Executing a dual ajax request in Angular 5

I am attempting to perform two HTTP requests consecutively, with the second request depending on the result of the first. However, it seems like I am overlooking something:

getParkingSpots(date) {
 var gmt = this.getTimezone().subscribe(data=>{
   if(data=="GMT"){
     return this.http.get(url1+date+"GMT").map(res=>res);//here is where I retrieve the desired data
   }
   else{
      return this.http.get(url2+date).map(res=>res);//this is the data I need
   }
 })

}

this.parkpace.getParkingSpots(dd).subscribe(data=> {//this is how I use it
  this.ParkingSpaces = data; 
  console.log(data);
  console.log("dd="+dd);
});

Answer №1

retrieveAvailableParking(date) {
  const gmtRequest = this.http.get(url1+date+"GMT");
  const nonGmtRequest = this.http.get(url2+date);

  return this.getTimezone().pipe(
    concatMap(info => info=="GMT" ? gmtRequest : nonGmtRequest)
  );
}

Answer №2

Implement the use of switchMap to seamlessly transition from one Observable to another without interrupting the stream:

retrieveParkingData(selectedDate) {
 return this.getTimezone().pipe(switchMap(timezoneInfo=>{
   if(timezoneInfo=="GMT"){
     return this.http.get(apiUrl1+selectedDate+"GMT").pipe(map(response=>response));//retrieving desired data disregarding URLs
   }
   else{
      return this.http.get(apiUrl2+selectedDate).pipe(map(response=>response));//obtaining intended data
   }
 }))

Answer №3

webpack_require is included in the bundle that was generated. It appears that there may be a problem with webpack or an incorrect module import.

Based on the provided code snippet, it seems that there are no apparent issues that would result in this specific error being triggered.

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