At the following code I get the 'ImproperlyConfigured' error, while with the uncommented line and won't. Why?

class EigenBankRekeningSerializer(serializers.ModelSerializer):

    class Meta:
        model = EigenBankRekening
        fields = (
            'id'
            'userid',
            'aangemaakt',
            'gewijzigd',
            'naam',
            'informatie',
            'iban_prefix',
            'bankrekening',
            'valuta',
            'eigen_gbr',
            'zakelijke_rekening',
            'oudedagsreserve',
        )
        # fields = '__all__'

Exception Value: Field name iduser is not valid for model EigenBankRekening.

In views.py I've got a filter by userid, but why is it prefixed with id in the API?

class EigenBankRekeningView(viewsets.ModelViewSet):
    permission_classes = [AllowAny]
    serializer_class = EigenBankRekeningSerializer
    queryset = EigenBankRekening.objects.all()

    def get_queryset(self, **kwargs):
        user_bank = EigenBankRekening.objects.filter(userid=self.request.user.id)
        return user_bank

CodePudding user response：

Because you forgot to add comma after id field. Python assumes that id and userid is one string and concatenates both values. To fix just add comma after id:

class EigenBankRekeningSerializer(serializers.ModelSerializer):

    class Meta:
        model = EigenBankRekening
        fields = (
            'id', # here
            'userid',
            'aangemaakt',
            'gewijzigd',
            'naam',
            'informatie',
            'iban_prefix',
            'bankrekening',
            'valuta',
            'eigen_gbr',
            'zakelijke_rekening',
            'oudedagsreserve',
        )

To reproduce the error you can try following:

print(
    'id'
    'user'
) # output >'iduser'