As written it looks like you want to get all the 0 status transactions for
a given user, and then get all the transaction details for those
transactions (.filter allows for any number of results) Since your var
transaction is a list, and you really only care about the ids to pull the
transaction details, you should have your code like this:
def get_object(self, pk):
user = User.objects.get(id=pk)
transactions = Transaction.objects.filter(user_id=user.id,
current_status=0).values_list('id', flat=True)
return Transaction_Detail.objects.filter(transaction_id__in=transactions
, status=0)
On Thursday, March 8, 2018 at 9:52:44 AM UTC-5, Angel Rojas wrote:
>
> Hello friends, I have a little problem with a relationship with 3 tables
>
> tables
> - User
> - Transaction
> - TransactionDetail
>
> my query is
>
> class TransactionInitiated(generics.ListAPIView):
> """
> List Transaction Initiated
> """
> serializer_class = TransactionSerializer
>
> def get_object(self, pk):
> user = User.objects.get(id=pk)
> transaction = Transaction.objects.filter(user_id=user.id,
> current_status=0)
> # Transactiondetail.objects.filter(transaction_id=transaction.id,
> status=0)
> return Transaction.objects.filter(user_id=user.id,
> current_status=0).order_by('-id')
>
> def get(self, request, pk, format=None):
> current_user = request.user
> list_trans_init = self.get_object(current_user.id)
> serializer = TransactionSerializer(list_trans_init, many=True)
> return JsonResponse({'data': serializer.data}, safe=False)
>
>
> with this query I recovery all user with a respective transaction, but I
> don't how to use inner join in here, I try next
>
>
> def get_object(self, pk):
> user = User.objects.get(id=pk)
> transaction = Transaction.objects.filter(user_id=user.id,
> current_status=0)
> return Transaction_Detail.objects.filter(transaction_id=transaction,
> status=0)
>
>
> in here return me the next error
>
>
> more than one row returned by a subquery used as an expression.
>
>
>
> please some help me.
>
>
> thanks for your attention.
>
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