public IActionResult AssignTo(int projectId, string employeeId)
        {
            if (ModelState.IsValid)
            {
                if (projectDataService.IsEmployeeInProject(employeeId, projectId))
                {
                    ModelState.AddModelError("EmployeeId", "This employee is already in this project");

                    var model = new EmployeeProjectModel {
                        employeeId = employeeId
                    };

                    return(RedirectToAction("Assign", "Project", model));
                }

                projectDataService.Assign(employeeId, projectId);

                return(RedirectToAction("Index", "Home"));
            }
            return(RedirectToAction("Assign", "Project"));
        }