When first call this function, it return no thing but when i try again it return true data. idk why, My Exam:

getUserAccountInfo(token: string | null): Observable<UserAccount> {
        return this.http.get<UserAccount>(
          AUTH_API   '/get_user_account_info?token='   token
        );
      }

    public getCurrentUserAccount(): any {
        let token = this.getToken();
        let check = new UserAccount();
        this.authService.getUserAccountInfo(token).subscribe({
          next: (data) => (this.currentUserAccount = data),
          error: (err) => console.log(err),
        });
    
        return this.currentUserAccount;
      }

CodePudding user response：

  public getCurrentUserAccount(): any {
    let token = this.getToken();
    let check = new UserAccount();
    this.authService.getUserAccountInfo(token).subscribe({
      next: (data) => (this.currentUserAccount = data;
             return this.currentUserAccount;),
      error: (err) => console.log(err),
    });

you can try this change

  }

CodePudding user response：

The problem is that you are returning before the subscription finishes. You need to wait for it somehow. In the example below I wait for it using a promise:

export class MyService {
  async getCurrentUserAccount(): any {
    let token = this.getToken();
    let check = new UserAccount();
    this.currentUserAccount = await this.authService
        .getUserAccountInfo(token)
        .pipe(first()) // Import first() from rxjs
        .toPromise(); 

    return this.currentUserAccount;   
  }
}

export class App {
  async ngOnInit() {
    const userAccount = await this.myService.getCurrentUserAccount();
  }
}