Django test: Residence() got an unexpected keyword argument 'hotel_id' - django

Question

class Hotel (models.Model):
name = models.CharField()
country = models.CharField()
city = models.CharField()
street = models.CharField()
class Residence(models.Model):
hotel_id = models.ForeignKey(Hotel, on_delete=models.DO_NOTHING, related_name='hotel')
house_number = models.CharField()
I want to join two models (Hotel and Residence) and then post it. I wrote the folowing code:
serializers.py
class HotelSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Hotel
fields = ['name', 'country', 'city', 'street']
class ResidenceSerializer(serializers.HyperlinkedModelSerializer):
hotel_id = HotelSerializer()
class Meta:
model = Residence
fields = ['house_number', 'hotel_id']
def create(self, validated_data):
return Residence.objects.create(**validated_data)
views.py
class ResidenceViewSet(viewsets.ModelViewSet):
serializer_class = ResidenceSerializer
queryset = Residence.objects.all()
When I try to post data in my api I got the following error: Residence() got an unexpected keyword argument 'hotel_id'. Can someone help me?

Answer 1

Replacing hotel_id with hotel. And still, you can pass hotel from view
class ResidenceSerializer(serializers.HyperlinkedModelSerializer):
hotel = HotelSerializer()
class Meta:
model = Residence
fields = ['house_number', 'hotel']
Also if you are not interested in hyper links(urls) then replace
`serializers.HyperlinkedModelSerializer` with `serializers.ModelSerializer`.
Difference between HyperlinkedModelSerializer and ModelSerializer is serializer is posted here by Serjik
A simple example:
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'groups')
class GroupSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Group
fields = ('url', 'name')
bash> http -a admin:yourpassword http://127.0.0.1:8000/users/
"results": [
{
"email": "admin#min.com",
"groups": [
"http://127.0.0.1:8000/groups/1/",
"http://127.0.0.1:8000/groups/2/"
],
"url": "http://127.0.0.1:8000/users/1/",
"username": "admin"
}
]
But if you change
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'groups')
The result will be:
"results": [
{
"email": "admin#min.com",
"groups": [
1,
2
],
"url": "http://127.0.0.1:8000/users/1/",
"username": "admin"
}
]