5.Serializer，ModelSerializer区别

Serializer示例代码：

# 使用Serializer
class BookSerializer(serializers.Serializer):id = serializers.IntegerField(read_only=True)title = serializers.CharField(max_length=100)author = serializers.CharField(max_length=100)publication_date = serializers.DateField()def create(self, validated_data):return Book.objects.create(validated_data)def update(self, instance, validated_data):instance.title = validated_data.get(\'title\', instance.title)instance.author = validated_data.get(\'author\', instance.author)instance.publication_date = validated_data.get(\'publication_date\', instance.publication_date)instance.save()return instance

ModelSerializer示例代码：