serializers.py

class InvoiceList(ManyRelatedField):
    def __init__(self):
    child = InvoiceSerializer()
    super(InvoiceList, self).__init__()
  
    def to_representation(self, iterable):
        request = self.parent.context['request']
        return [
            self.child_relation.to_representation(value)
            for value in iterable.filter(user=request.user)
        ]