Question

我已经检查了几十个例子，我认为我正在以正确的方式进行，但是我收到此错误消息'City'对象没有属性'store'，请帮忙，看看我附带的序列化器。

class CitySerializer(serializers.HyperlinkedModelSerializer):
    store = serializers.HyperlinkedRelatedField(view_name = 'store:listStoreByCity',read_only=True)

    class Meta:
        model = City
        read_only_fields = ['location']
        fields = [
                "city", 
                "latitude", 
                "longitude",
                "store",
                "state", 
                "img", 
                "location",
            ]

Models.py

from django.contrib.gis.db import models
from localflavor.us.us_states import STATE_CHOICES


class City(models.Model):
    city = models.CharField(max_length=120)
    latitude = models.CharField(blank=True, max_length=11, default=0)
    longitude = models.CharField(blank=True, max_length=11, default=0)
    state = models.CharField(max_length=2, choices=STATE_CHOICES, null=True, blank=True)
    img = models.ImageField(upload_to='img', blank=True)
    location = models.PointField(null=True, blank=True)

    def __str__(self):
        return str(self.city)

Answer 1

默认情况下，DRF会通过您在模型中没有的#include "stdafx.h" #include <iostream> #include <string.h> #include <string> // Required headers using namespace std; //Class movie starts class Movie { public: void SetMovieName(string moviename); // Function to set the name of the movie // moviename = movie; later on string GetMPAAR(); //function to return the MPAA rating int amountofratingsof1() const; //function to return the number of people that rated the movie as a 1 int amountofratingsof2() const; //function to return the number of people that rated the movie as a 2 int amountofratingsof3() const; //function to return the number of people that rated the movie as a 3 int amountofratingsof4() const; //function to return the number of people that rated the movie as a 4 int amountofratingsof5() const; //function to return the number of people that rated the movie as a 5 int average() const; //function to return the average value of all ratings std::string Movies(string moviename = "Gavecube: The Movie"); //constructor to set the movie private: string Movie; //variable to store the name of the movie int peoplethatrated1; // variable to store the number of people that rated 1 int peoplethatrated2; // variable to store the number of people that rated 2 int peoplethatrated3; // variable to store the number of people that rated 3 int peoplethatrated4; // variable to store the number of people that rated 4 int peoplethatrated5; // variable to store the number of people that rated 5 }; //implementation file: void Movie::SetMovieName(const string moviename) { //function below checks if it is a string or not if (!cin) { cout << "Not a valid input. Please restart." << endl; } } int Movie::amountofratingsof1()const { } int Movie::amountofratingsof2()const { } int Movie::amountofratingsof3()const { } int Movie::amountofratingsof4()const { } int Movie::amountofratingsof5()const { } //constructor std::string Movie(string moviename) { SetMovieName(moviesname) } int main() { Movie Movies("Hello"); return 0; }名称查看相关对象。

将related_name设置为“store”或在序列化程序的store中使用源序列化程序的字段的参数源，并将其设置为store。

如果您仍不清楚，请查看教程http://www.django-rest-framework.org/tutorial/4-authentication-and-permissions/#adding-information-to-our-model中描述的这些案例

模型对象没有属性HyperlinkedRelatedField

1 个答案: