models.py 文件源码

def get_related_objects_for_create(user_id, book_form):
        """
        Selects related objects to book instance when create new book; creates author object if needed.

        :param int user_id: The id of user.
        :param app.forms.AddBookForm book_form: The form with received data.

        :return: A dict of objects related to book.
        """
        try:
            author = Author.objects.get(author_name__iexact=book_form.cleaned_data['author'])
        except ObjectDoesNotExist:
            author = Author.objects.create(author_name=book_form.cleaned_data['author'])

            logger.info("Created new author with name: '{}' and id: '{}'."
                        .format(author.author_name, author.id))

        category = Category.objects.get(category_name=book_form.cleaned_data['category'])
        lang = Language.objects.get(language=book_form.cleaned_data['language'])
        user = TheUser.objects.get(id_user=user_id)

        return {'author': author, 'category': category, 'lang': lang, 'user': user}

    # ------------------------------------------------------------------------------------------------------------------