public ActionResult DeletePatient(int id)
{
var patient = patientRepository.GetPatientById(id);
var exercises = exerciseRepository.GetAllPatientExercises(patient.Id);
//Usuwanie wszystkich cwiczeń dla pacjenta
exerciseRepository.DeleteExercises(exercises);
exerciseRepository.Complete();
patientRepository.DeletePatient(patient);
patientRepository.Complete();
return(RedirectToAction("PatientList"));
}