Nested router not working - django

Question

I'm new to Django and am struggling to get nested routers working. Basically, I'm trying to model the endpoint /api/v1/organizers/1/events/1, where I have Event and Organizer models as follows:
class Event(models.Model):
class Meta:
db_table = 'events'
STATUS_CHOICES = (
('scheduled', 'Scheduled'),
('completed', 'Completed'),
('cancelled', 'Cancelled')
)
name = models.TextField()
purpose = models.TextField()
date_time = models.DateTimeField()
description = models.TextField()
programme = models.TextField()
entry_fee = models.DecimalField(max_digits=6, decimal_places=2)
status = models.TextField(choices=STATUS_CHOICES)
comments = models.TextField(null=True)
people_invited = models.ManyToManyField('Contact', through='EventInvitation')
organizer = models.ForeignKey('Organizer', on_delete=models.CASCADE)
class Organizer(models.Model):
STATUS_CHOICES = (
('inactive', 'Inactive'),
('active', 'Active'),
)
class Meta:
db_table = 'organizers'
first_name = models.TextField()
middle_name = models.TextField(null=True)
last_name = models.TextField(null=True)
email = models.OneToOneField('Email', on_delete=models.CASCADE)
company_name = models.TextField(null=True)
company_description = models.TextField(null=True)
password = models.TextField()
login_token = models.TextField(null=True)
registered_on = models.DateTimeField(null=True)
status = models.TextField(choices = STATUS_CHOICES, default='inactive')
I created another app called rest_api to handle the API. The models are stored in an app called shared_stuff. Anyway, here's the project-level urls.py (don't mind the front_end app for now):
from django.conf.urls import include, url
urlpatterns = [
url(r'^api/v1/', include('rest_api.urls')),
url(r'^', include('frontend.urls')),
]
And here's the urls.py from the app rest_api:
from django.conf.urls import url, include
from rest_framework_nested import routers
from .views import *
router = routers.SimpleRouter()
# /organizers/12/events/1
router.register(r'organizers', OrganizerViewSet, base_name='organizers')
organizer_router = routers.NestedSimpleRouter(router, r'organizers', lookup='organizers')
organizer_router.register(r'events', EventViewSet, base_name='organizers-events')
urlpatterns = [
url(r'^', include(router.urls)),
url(r'^', include(organizer_router.urls)),
]
Here's the serializers.py for rest_api app:
class EventSerializer(serializers.ModelSerializer):
class Meta:
model = Event
fields = ['id', 'name', 'purpose', 'date_time', 'description', 'programme', 'entry_fee', 'status', 'comments']
class OrganizerSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Organizer
fields = ['id', 'first_name', 'middle_name', 'last_name', 'email', 'company_name', 'company_description', 'registered_on', 'status']
events = serializers.HyperlinkedIdentityField(
view_name = 'events_list',
lookup_url_kwarg = 'organizer_pk'
)
And finally, here's the views.py from the app rest_api:
from rest_framework import viewsets
from .models import *
from .serializers import *
class EventViewSet(viewsets.ModelViewSet):
def list(self, request, organizer_pk=None, name='events_list'):
events = self.queryset.filter(organizer=organizer_pk)
serializer = EventSerializer(events, many=True)
return Response(serializer.data)
class OrganizerViewSet(viewsets.ModelViewSet):
def list(self, request, name='organizers_list'):
data = Organizer.objects.all()
serializer = OrganizerSerializer(data, many=True)
return Response(serializer.data)
I'm sure there are many things broken in my code, and that's where I need help. The problem is I'm getting the following error:
TypeError: list() got an unexpected keyword argument 'organizers_pk'
I'm not sure what's wrong, and will appreciate some help!

Answer 1

I got it working by changing the EventViewSet to the following:
def list(self, request, organizers_pk=None, name='events_list'):
events = self.queryset.filter(organizer=organizers_pk)
serializer = EventSerializer(events, many=True)
return Response(serializer.data)
I'm not sure why, but the expected keyword argument name is organizers_pk, whereas I had organizer_pk. I would like to know why this is so, but other than that my problem is solved for now.