def save(self, commit=True):
        try:
            # instance = super(CategoryForm, self).save(commit=False)
            instance = super(CategoryForm, self).save()
            return instance
        except Exception as e:
            if isinstance(e, CategoryRootCheckError):
                self.add_error('title', '')
                self.add_error('parent', '')
                raise forms.ValidationError(e)