I am trying to build an app using the DRF's quickstart guide. The app has the following setup
/school/
/school/<pk>
/school/<pk>/courses/
/school/<pk>/courses/<pk>
/school/<pk>/courses/<pk>/members/
When I follow the quickstart I get the following error
ImproperlyConfigured at /api/v1/school/1/courses/1/members/
Could not resolve URL for hyperlinked relationship using view name "courses-detail". You may have failed to include the related model in your API, or incorrectly configured the `lookup_field` attribute on this field.
when vising
/school/<pk>/courses/<pk>/members/
I don't really understand the error message I am getting as I have the view name "courses-detail" readily available. Could anybody help me clear out what I have done wrong?
This is the code I have in the example application.
views.py
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.shortcuts import render, get_object_or_404
from rest_framework import viewsets, permissions
from rest_framework.response import Response
from .serializers import SchoolSerializer, SchoolActivitySerializer, SchoolCourseSerializer, CourseSerializer, ActivitySerializer, SchoolCourseMemberSerializer, MemberSerializer
from .models import School, Course, Activity, Member
# Create your views here.
class SchoolViewset(viewsets.ModelViewSet):
serializer_class = SchoolSerializer
queryset = School.objects.all()
class CourseViewset(viewsets.ModelViewSet):
serializer_class = CourseSerializer
queryset = Course.objects.all()
def get_school(self, school_pk):
school = get_object_or_404(School.objects.all(), pk=school_pk)
return school
def list(self, request, *args, **kwargs):
queryset = Course.objects.all()
serializer = CourseSerializer(queryset, many=True)
return Response(serializer.data)
class MemberViewset(viewsets.ModelViewSet):
serializer_class = MemberSerializer
queryset = Member.objects.all()
class ActivityViewset(viewsets.ModelViewSet):
serializer_class = ActivitySerializer
queryset = Activity.objects.all()
def list(self, request, *args, **kwargs):
queryset = Activity.objects.filter()
serializer = ActivitySerializer(queryset, many=True)
return Response(serializer.data)
class SchoolCourseMemberViewset(viewsets.ModelViewSet):
serializer_class = SchoolCourseMemberSerializer
queryset = Member.objects.all()
serializers.py
from rest_framework import serializers
from rest_framework_nested import serializers as nested_serializers
from rest_framework_nested import relations
from .models import School, Course, Activity, Member
class CourseSerializer(serializers.ModelSerializer):
class Meta:
model = Course
fields = ('course_name', 'course_date', 'course_school',)
class ActivitySerializer(serializers.ModelSerializer):
class Meta:
model = Activity
fields = ('activity_name', 'activity_location', 'activity_school', 'activity_date', 'activity_price',)
class MemberSerializer(serializers.ModelSerializer):
class Meta:
model = Member
fields = ('user', 'ranking',)
class SchoolCourseSerializer(nested_serializers.NestedHyperlinkedModelSerializer):
parent_lookup_kwargs = {
'school_pk': 'course_school',
}
class Meta:
model = Course
fields = ('id', 'course_name', 'course_date',)
class SchoolCourseMemberSerializer(nested_serializers.NestedHyperlinkedModelSerializer):
courses_lookup_kwargs = {
'school_pk': 'school__pk',
'course_pk': 'course__pk',
}
courses = relations.NestedHyperlinkedRelatedField(parent_lookup_kwargs={'course_school_pk': 'course_school__pk'}, view_name='courses-detail', queryset=Course.objects.all())
class Meta:
model = Member
fields = ('url', 'user', 'ranking', 'courses', )
class SchoolActivitySerializer(nested_serializers.NestedHyperlinkedModelSerializer):
class Meta:
model = Activity
fields = ('activity_name', 'activity_location', 'activity_date', 'activity_price',)
class SchoolMemberSerializer(nested_serializers.NestedHyperlinkedModelSerializer):
class Meta:
model = Member
fields = ('user', 'ranking',)
class SchoolSerializer(serializers.ModelSerializer):
class Meta:
model = School
fields = ('id', 'url', 'school_name', 'school_address', 'courses', 'activities', 'members', )
courses = SchoolCourseSerializer(many=True, read_only=True)
activities = SchoolActivitySerializer(many=True, read_only=True)
members = SchoolMemberSerializer(many=True, read_only=True)
models.py
from __future__ import unicode_literals
from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver
# Create your models here.
class School(models.Model):
school_name = models.CharField(max_length=30, verbose_name='Name', help_text="The name of the school.")
school_address = models.CharField(max_length=30, verbose_name='Address', help_text="The location of the school.")
class Course(models.Model):
course_name = models.CharField(max_length=30)
course_date = models.DateTimeField(auto_now_add=True)
course_school = models.ForeignKey(School, related_name='courses')
class Activity(models.Model):
activity_name = models.CharField(max_length=30)
activity_location = models.CharField(max_length=30)
activity_school = models.ForeignKey(School, related_name='activities')
activity_date = models.DateTimeField(auto_now_add=True)
activity_price = models.DecimalField(decimal_places=2, max_digits=11, verbose_name='price')
class Member(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
ranking = models.IntegerField(verbose_name='ranking', blank=False)
#users = User.objects.all().select_related('profile')
@receiver(post_save, sender=User)
def create_user_member(sender, instance, created, **kwargs):
if created:
Member.objects.create(user=instance)
@receiver(post_save, sender=User)
def save_user_member(sender, instance, **kwargs):
instance.member.save
urls.py
from django.conf.urls import url, include
from rest_framework_nested import routers
from .views import SchoolViewset, CourseViewset, ActivityViewset, MemberViewset, SchoolCourseMemberViewset
router_1 = routers.SimpleRouter()
router_1.register('school', SchoolViewset, base_name='school')
school_router = routers.NestedSimpleRouter(router_1, r'school', lookup='school')
school_router.register(r'activities', ActivityViewset, base_name='activities')
school_router.register(r'courses', CourseViewset, base_name='courses')
school_router.register(r'members', MemberViewset, base_name='members')
school_member_router = routers.NestedSimpleRouter(school_router, r'courses', lookup='courses')
school_member_router.register('members', SchoolCourseMemberViewset, base_name='members')
urlpatterns = [
url(r'', include(router_1.urls)),
url(r'', include(school_router.urls)),
url(r'', include(school_member_router.urls)),
]
If i have failed to include any information needed to resolve the error please do tell me. I will gladly supply any additional information.
Thanks in advance.
