import { Injectable } from '@angular/core'; import { ActivatedRouteSnapshot } from '@angular/router'; import { Observable } from 'rxjs/internal/Observable'; import { EmployeeAttendance } from './employee-attendance'; import { EmployeeAttendanceService } from './employee-attendance.service'; @Injectable({ providedIn: 'root', }) export class EmployeeAttendanceResolver { constructor(private ser: EmployeeAttendanceService) {} resolve(route: ActivatedRouteSnapshot): Observable { const id = route.paramMap.get('id'); const startDate = route.queryParamMap.get('startDate') || null; const finishDate = route.queryParamMap.get('finishDate') || null; return this.ser.get(id, startDate, finishDate); } }