Question

class Book(models.Model):
    title = models.CharField(max_length=200)
    author = models.ForeignKey('Author', on_delete=models.SET_NULL, null=True)
    summary = models.TextField(max_length=1000, help_text="Enter a brief description of the book")

class Author(models.Model):
    first_name = models.CharField(max_length=100)
    last_name = models.CharField(max_length=100)
    date_of_birth = models.DateField(null=True, blank=True)
    date_of_death = models.DateField('died', null=True, blank=True)

class BookSerializer(serializers.ModelSerializer):
    class Meta:
        model = Book
        fields = ('title', 'author', 'summary')

class BookAPIListView(ListAPIView):
    serializer_class = BookSerializer
    queryset = Book.objects.all()

urlpatterns += [
    path('api/books/', views.BookAPIListView.as_view(), name='api_books')
]

我正在尝试编写一个API以返回书名，作者和书摘。但是，由于这本书的作者是外键，因此它返回的是id而不是作者的名字。修复它的简单方法是什么？提前致谢。

Answer 1

您也可以编辑BookSerializer来序列化Author，从而将其表示为“ 嵌套”数据。因此，我们首先为Author模型定义一个序列化器：

class AuthorSerializer(serializers.ModelSerializer):

    class Meta:
        model = Author
        fields = ('first_name', 'last_name', 'date_of_birth', 'date_of_birth')

，然后指定此序列化器作为序列化author模型的Book字段的方式：

class BookSerializer(serializers.ModelSerializer):

    author = AuthorSerializer(read_only=True)

    class Meta:
        model = Book
        fields = ('title', 'author', 'summary')

有关更多信息，请参见documentation on nested relationships [Django-rest-doc]。

APIListView返回id而不是值

1 个答案: