Django项目总结：错误日志【xxx-detail 和 lookup_field】

环境版本

Django Version: 3.0.8

Python Version: 3.7.5

Django REST framework  3.11.0

 

报错信息

Could not resolve URL for hyperlinked relationship using view name "game-detail".

You may have failed to include the related model in your API,

or incorrectly configured the `lookup_field` attribute on this field.

 

出现场景

models.py

from django.db import models


class Game(models.Model):
    g_name = models.CharField(max_length=32)
    g_price = models.FloatField(default=0)

 

serializers.py

from rest_framework import serializers
from App.models import Game


class GameSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Game
        fields = ('url', 'id', 'g_name', 'g_price')

 

App/views.py

from rest_framework.generics import ListCreateAPIView, RetrieveUpdateDestroyAPIView
from App.models import Game
from App.serializers import GameSerializer


# 使用ListCreateAPIView可以完成一个接口处理get/post两种请求
class GamesView(ListCreateAPIView):
    queryset = Game.objects.all()
    serializer_class = GameSerializer


# 查询单个数据 进行数据操作
class GameView(RetrieveUpdateDestroyAPIView):
    queryset = Game.objects.all()
    serializer_class = GameSerializer

 

App/urls.py

from django.urls import path
from App import views

app_name = 'App'
urlpatterns = [
    path('games/', views.GamesView.as_view()),
    path('games/<int:pk>/', views.GameView.as_view(), name="game-detail"),
]

 

根/urls.py

from django.urls import path, include

urlpatterns = [
    path('app/', include('App.urls')),
]

 

 

解决方法有两种

方法一：根路由和App路由中不添加 namespace 和 app_name

方法二：换一种路由写法

https://docs.djangoproject.com/zh-hans/3.1/topics/http/urls/

 

不使用 App/urls.py，将路由写在根路由中。

 

根/urls.py

from django.urls import path, include
from App import views

extra_patterns = [
    path('games/', views.GamesView.as_view()),
    path('games/<int:pk>/', views.GameView.as_view(), name="game-detail"),
]

urlpatterns = [
    path('app/', include(extra_patterns)),
]