Python Django Rest框架-嵌套序列化而非嵌套
我想要一个多级嵌套序列化程序。基本上每个学校都有一份学生名单,每个学生都有一份成绩表。它正在输出这个Python Django Rest框架-嵌套序列化而非嵌套,python,django,serialization,django-rest-framework,Python,Django,Serialization,Django Rest Framework,我想要一个多级嵌套序列化程序。基本上每个学校都有一份学生名单,每个学生都有一份成绩表。它正在输出这个 {"id":1,"name":"Sierra Grande Elem/Junior High"} 看起来它不包括我创建的任何鸟巢 这是我的模特 class School(models.Model): name = models.TextField(max_length = 150, blank=True) class Student(models.Model): curren
{"id":1,"name":"Sierra Grande Elem/Junior High"}
看起来它不包括我创建的任何鸟巢
这是我的模特
class School(models.Model):
name = models.TextField(max_length = 150, blank=True)
class Student(models.Model):
current_school = models.ForeignKey(
"School",
null = True,
on_delete = models.PROTECT,
)
first_name = models.CharField(max_length = 35, blank=True)
last_name = models.CharField(max_length = 35, blank=True)
class Grade(models.Model):
student = models.ForeignKey(
"Student",
null = True,
on_delete = models.PROTECT,
)
course = models.ForeignKey(
"Course",
null = True,
on_delete = models.PROTECT,
)
grade = models.FloatField(null = True)
这是我的serializers.py
class NestedSchoolSerializer(serializers.ModelSerializer):
class Meta:
model = School
fields = ("id","name")
class NestedStudentSerializer(serializers.ModelSerializer):
school_set = NestedSchoolSerializer(many = True, read_only = True)
class Meta:
model = Student
fields = ("school_set","id","first_name","last_name")
class NestedGradeSerializer(serializers.ModelSerializer):
student_set = NestedStudentSerializer(many = True, read_only = True)
class Meta:
model = Grade
fields = ("student_set","id","course","grade")
这是我的views.py文件:
class SchoolInfo(generics.RetrieveAPIView):
queryset = School.objects.all()
serializer_class = NestedSchoolSerializer
这是我的url.py文件:
urlpatterns = [
path('school/grade/<int:pk>/', views.SchoolInfo.as_view()),
]
urlpatterns=[
路径('school/grade/',views.SchoolInfo.as_view()),
]
非常感谢您的帮助!刚到Django,已经解决这个问题有一段时间了。我需要更改代码的哪一部分?欢迎使用堆栈溢出!看起来你在正确的轨道上,但是你的巢被颠倒了。您的
nestedschool序列化程序
不知道任何有关学生的信息,NestedStudentSerializer
也不知道成绩。可能还有其他问题,但这是第一个跳出来对我。请尝试以下方法:
class NestedGradeSerializer(serializers.ModelSerializer):
class Meta:
model = Grade
fields = ("id","course","grade")
class NestedStudentSerializer(serializers.ModelSerializer):
grade_set = NestedGradeSerializer(many = True, read_only = True)
class Meta:
model = Student
fields = ("grade_set","id","first_name","last_name")
class NestedSchoolSerializer(serializers.ModelSerializer):
student_set = NestedStudentSerializer(many = True, read_only = True)
class Meta:
model = School
fields = ("id", "name", "student_set")
了解如何设置这些内容的一种方法是,在大多数情况下,序列化程序中的字段应该映射到同一模型中的字段(如果您使用的是ModelSerializer
)