python - Django REST Framework 多对多创建和更新

Question

模型.py:

class Book(models.Model):
  name = models.CharField(max_length=100)
  description = models.TextField(max_length=500)
  image = models.ImageField(height_field="height_field", width_field="width_field")
  height_field = models.IntegerField(default=255)
  width_field = models.IntegerField(default=255)
  price = models.FloatField()
  edition = models.CharField(max_length=100)
  no_of_page = models.IntegerField()
  country = models.CharField(max_length=50)
  publication = models.ForeignKey(Publication, on_delete=models.CASCADE)
  authors = models.ManyToManyField(Author, through='AuthorBook')
  ratings = GenericRelation(Rating, related_query_name='books')

class AuthorBook(models.Model):
  author = models.ForeignKey(Author, on_delete=models.CASCADE)
  book = models.ForeignKey(Book, on_delete=models.CASCADE)

class Author(models.Model):
  name = models.CharField(max_length=100)
  biography = models.TextField(max_length=500)
  image = models.ImageField(height_field="height_field", width_field="width_field")
  height_field = models.IntegerField(default=255)
  width_field = models.IntegerField(default=255)

序列化器.py

class AuthorListSerializer(ModelSerializer):
  url = author_detail_url
  class Meta:
    model = Author
    fields = [
      'url',
      'id',
      'name',
    ]

class BookCreateUpdateSerializer(ModelSerializer):
  authors = AuthorListSerializer(many=True, read_only=True)

  def create(self, validated_data):
    #code

  def update(self, instance, validated_data):
    #code

  class Meta:
    model = Book
    fields = [
      'name',
      'description',
      'price',
      'edition',
      'no_of_page',
      'country',
      'publication',
      'authors',
    ]

View .py

class BookCreateAPIView(CreateAPIView):
  queryset = Book.objects.all()
  serializer_class = BookCreateUpdateSerializer

我正在致力于实现 Django REST Framework。我有两个模型 Book 和 Author。但是 django create api view 不显示作者字段下拉列表。我检查了许多多对多领域的解决方案 DRF。请帮助我显示作者字段并编写 create() 和 update 函数。如果你看到DRF api页面，就清楚了。

Answer 1

这是因为read_only=True 。尝试删除 bookserializer 的authors 字段的此参数:

class BookCreateUpdateSerializer(ModelSerializer):
    authors = AuthorListSerializer(many=True)