[英]NotImplementedError: Operator 'getitem' is not supported on this expression
[英]Python. SQL Alchemy NotImplementedError: Operator 'getitem' is not supported on this expression
我通過sql alchemy在DB中創建記錄。 下一步是嘗試將創建的對象的ID捕獲到另一個在創建的對象上具有fk的表中(assign_resource_to_user)。 這是我的代碼:
from dev_tools.models.user import User
from dev_tools.models.resource Resource
resource = Resource(
code=self.message_body['code'],
description=self.message_body['description'],
crew_id=None,
catalog_resource_type_id=self.message_body['catalog_resource_type_id'],
catalog_resource_status_id=self.message_body['catalog_resource_status_id'],
created_at=datetime.utcnow(),
created_by=None,
is_available=self.message_body['is_available'],
)
self.db_session.add(resource)
self.db_session.flush()
assign_resource_to_user = self.db_session.query(
User
).filter(
User.id == self.user_info.id
).update(
User.resource_id == resource.id
)
self.db_session.add(assign_resource_to_user)
我有錯誤:
Traceback (most recent call last):
File "/home/Документы/project/ResourseManagment/rm-private-application-server/apps/controller/helpers/data_processing/action/custom/resource_from_a_user.py", line 227, in <module>
resources.create_record_in_db()
File "/home/Документы/project/ResourseManagment/rm-private-application-server/apps/controller/helpers/data_processing/action/custom/resource_from_a_user.py", line 211, in create_record_in_db
User.resource_id == resource.id
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/orm/query.py", line 3486, in update
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/orm/persistence.py", line 1334, in exec_
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/orm/persistence.py", line 1405, in _do_pre_synchronize
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/orm/persistence.py", line 1540, in _additional_evaluators
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/orm/persistence.py", line 1473, in _resolved_values_keys_as_propnames
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/orm/persistence.py", line 1457, in _resolved_values
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/sql/operators.py", line 411, in __getitem__
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/sql/elements.py", line 694, in operate
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/sql/operators.py", line 411, in __getitem__
File "<string>", line 1, in <lambda>
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/sql/type_api.py", line 63, in operate
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/sql/default_comparator.py", line 192, in _getitem_impl
File "/home/Документы/project/venv/lib/python3.7/site-packages/SQLAlchemy-1.2.14-py3.7-linux-x86_64.egg/sqlalchemy/sql/default_comparator.py", line 197, in _unsupported_impl
NotImplementedError: Operator 'getitem' is not supported on this expression
該字符串錯誤:
).update(
User.resource_id == resource.id
)
也許有人知道如何解決或有相同的問題,可以幫助我解決。 謝謝。
Query.update()
希望將屬性到值的映射作為第一個位置參數,但是您已將其傳遞給SQL表達式語言對象。 請注意, Query.update()
是批量操作,不返回模型實例等,而是返回匹配的行數。 所以改為:
self.db_session.query(
User
).filter(
User.id == self.user_info.id
).update(
{User.resource_id: resource.id},
synchronize_session=False # Change this according to your needs
)
# No add
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