. Сохранение процесса в порядке, и данные отражаются в БД, но я получаю эту ошибку. «AttributeError: Получил AttributeError при попытке получить значение для поля asset_list на сериализаторе TransactionSerializer.»
Traceback
Traceback (most recent call last):
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\views\decorators\csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\views\generic\base.py", line 71, in view
return self.dispatch(request, *args, **kwargs)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\views.py", line 505, in dispatch
response = self.handle_exception(exc)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\views.py", line 465, in handle_exception
self.raise_uncaught_exception(exc)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\views.py", line 476, in raise_uncaught_exception
raise exc
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\views.py", line 502, in dispatch
response = handler(request, *args, **kwargs)
File "C:\Users\a.wong\assetWorkspace\Asset\AIMS-BE\V1\transactions\views\transactions_view.py", line 22, in post
return Response(TransactionSerializer(transaction).data, status=status.HTTP_201_CREATED)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\serializers.py", line 562, in data
ret = super().data
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\serializers.py", line 260, in data
self._data = self.to_representation(self.instance)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\serializers.py", line 516, in to_representation
attribute = field.get_attribute(instance)
File "C:\Users\a.wong\AppData\Local\Programs\Python\Python38-32\lib\site-packages\rest_framework\fields.py", line 487, in get_attribute
raise type(exc)(msg)
AttributeError: Got AttributeError when attempting to get a value for field `asset_list` on serializer `TransactionSerializer`.
The serializer field might be named incorrectly and not match any attribute or key on the `Transaction` instance.
Original exception text was: 'Transaction' object has no attribute 'asset_list'.
Models
транзакция_основы
from V1.accounts.models.employee_main import Employee
class Transaction(CreatedModified):
transaction_id = models.BigAutoField(primary_key=True)
employee_from = models.ForeignKey(
Employee,
related_name='employee_from_transactions',
related_query_name='employee_from_transaction',
default=None,
on_delete=models.CASCADE
)
employee_to = models.ForeignKey(
Employee,
related_name='employee_to_transactions',
related_query_name='employee_to_transaction',
default=None,
on_delete=models.CASCADE
)
location_from = models.CharField(null=True, blank=True, max_length=255)
location_to = models.CharField(null=True, blank=True, max_length=255)
transaction_type = models.CharField(
max_length=3,
choices=TransactionType.choices,
default=None
)
date_issued = models.DateField(auto_now=False, auto_now_add=False)
remarks = models.CharField(null=True, blank=True, max_length=255)
транзакция_домена_ассета
from V1.transactions.models.transaction_main import Transaction
from V1.assets.models.asset_main import Asset
class TransactionAssets(CreatedModified):
transaction = models.ForeignKey(
Transaction,
related_name='tr_assets_transactions',
related_query_name='tr_assets_transaction',
default=None,
on_delete=models.CASCADE
)
asset = models.ForeignKey(
Asset,
related_name='assets_transactions',
related_query_name='assets_transaction',
default=None,
on_delete=models.CASCADE
)
created_at = models.DateTimeField(auto_now_add=True, editable=False)
created_by = models.ForeignKey(settings.AUTH_USER_MODEL,
null=True, db_index=True, editable=False,
on_delete=models.SET_NULL, related_name="tr_assets_created")
Сериализаторы
транзакции_ассет_сериализатора
from V1.transactions.models.transaction_main_assets import TransactionAssets
class Transaction_AssetsSerializer(serializers.ModelSerializer):
class Meta:
model = TransactionAssets
fields = ('asset',)
транзакции_сериализатора
from V1.transactions.models.transaction_main import Transaction
from V1.transactions.models.transaction_main_assets import TransactionAssets
from V1.transactions.serializers.transactions_asset_serializer import Transaction_AssetsSerializer
class TransactionSerializer(serializers.ModelSerializer):
asset_list = Transaction_AssetsSerializer(many=True)
class Meta:
model = Transaction
fields = (
'employee_from',
'employee_to',
'location_from',
'location_to',
'transaction_type',
'date_issued',
'remarks',
'asset_list'
)
def create(self, validated_data):
asset_data = validated_data.pop('asset_list')
transaction = Transaction.objects.create(
employee_from = validated_data['employee_from'],
employee_to = validated_data['employee_to'],
location_from = validated_data['location_from'],
location_to = validated_data['location_to'],
transaction_type = validated_data['transaction_type'],
date_issued = validated_data['date_issued'],
remarks = validated_data['remarks'],
created_by=self.context['request'].user
)
for Transaction_item in asset_data:
TransactionAssets.objects.create(
transaction=transaction,
created_by=self.context['request'].user,
**Transaction_item
)
return transaction
Просмотр
class TransactionList(APIView):
@staticmethod
def get(request):
transactions = Transaction.objects.all()
return Response(TransactionSerializer(transactions, many=True).data)
@staticmethod
def post(request):
serializer = TransactionSerializer(data=request.data, context={'request': request})
if serializer.is_valid():
transaction = serializer.save()
return Response(TransactionSerializer(transaction).data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)