@Override
@Transactional
@PreAuthorize("hasRole('ROLE_ADMIN')")
public void remove(Long id) throws IllegalArgumentException {
Category category = categoryRepository.findOne(id);
if (category == null) {
throw new IllegalArgumentException(String.format("Category with id=%d does not exist.", id));
}
/*List<Question> questions = questionRepository.findByCategory(category);
for (Question question : questions) {
question.setCategory(null);
questionRepository.save(question);
}*/
categoryRepository.delete(id);
}
@Override
public Category findOne(Long id) {
return categoryRepository.findOne(id);
}