如何在NgRx中选择多个状态

Posted 2023-01-05

@Injectable()
export class UsersResolver implements Resolve<any> 

loading = false;

constructor(private store: Store<AppState>)  
resolve(route: ActivatedRouteSnapshot,
  state: RouterStateSnapshot): Observable<any> 
    return this.store
    .pipe(
      select(isUserLoaded),
      tap(userLoaded => 
        if (!this.loading && !userLoaded) 
          this.loading = true;
          this.store.dispatch(loadingUsers(
            pagination:  // **Here i want to get my pagination details from selectUserPagination state**
          ));
        
      ),
      filter(userLoaded => userLoaded), // only proceed further only in case of coursesLoaded is true
      first(), // Wait for first observable to get values or error
      finalize(() => this.loading = false) // Runs in last
  );
 

因此要选择我的userPagination状态并将其分派到loadUsers动作中。

如何将多个选择添加到此解析器，然后分派该操作？

答案

您可以使用withLatestFrom来获取状态的另一部分：

另一答案

您可以尝试combineLatest