public async Task <ResponseDto <int> > ChangeName(int id, string name)
{
var departmentFromDb = await _departmentsRepository.GetDepartmentById(id);
var departmentWithName = await _departmentsRepository.GetDepartmentByName(name);
ResponseDto <int> response = DepartmentsValidator.ValidateChangeName(departmentFromDb, departmentWithName, name);
if (response.HasErrors)
{
return(response);
}
response.Value = await _departmentsRepository.ChangeName(id, name);
return(response);
}