JavaScript and Angular are used to define class level variables

Hello, I'm currently diving into Angular and have encountered an issue with a class level variable called moratoriumID in my component. I have a method that makes a POST request and assigns the returned number to moratoriumID. Everything seems to work fine as I can see the number in the chrome debugger console. However, when I try to access the variable later in the code, it shows up as undefined. What am I missing here? How can I properly utilize the moratoriumID later on? Any insights or explanations would be greatly appreciated. --Jason

export class AddMoratoriumsComponent implements OnInit {
   moratoriumID: number;

   //The PostMoratorium method is supposed to assign the moratoriumID 
   PostMoratorium(moratoriumtopost: Moratorium):void {    
     this.moratoriumService.PostMoratorium(moratoriumtopost)
    .pipe(takeUntil(this.ngUnsubscribe))
    .subscribe((data) => (this.moratoriumID) = (data),
    (error) => (console.log(error)),
    () => console.log('Post moratorium is complete', this.moratoriumID), 
  );}

    //...The PostMoratorium method is being invoked here
      this.PostMoratorium(moratoriumtopost);

    //Later on, trying to use moratoriumID but receiving undefined error - why?
       if (this.selectzipvalues.length>0){
         const res = this.isoLocs.filter(i => this.selectzipvalues.includes(i.zipCode));
         res.forEach(myFunction);
         function myFunction(item) {
            const moratoriumlocationstopost = {
              county:item.county,
              city:item.city,
              zip:item.zipCode,
              moratoriumId:this.moratoriumID, //IT SAYS ITS UNDEFINED ..WHY ?
    } as MoratoriumLocation;   

}}

Answer №1

It appears that the solution lies in utilizing switchMap() function.

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