[英]djongo query_set with filter on boolean field
I have a django application with djongo as a database driver.我有一个 django 应用程序,将 djongo 作为数据库驱动程序。 My model is simple:我的 model 很简单:
from django.db import models
from djongo.models import ObjectIdField
class TmpModel(models.Model):
_id = ObjectIdField()
is_deleted = models.BooleanField(default=False)
When I run in shell simple filter command:当我在 shell 中运行简单的过滤器命令时:
>>> TmpModel().save()
>>> TmpModel(is_deleted=True).save()
>>> TmpModel.objects.filter(is_deleted=False).all()
I got an error:我收到一个错误:
(0.000) QUERY = 'SELECT "solutions_tmpmodel"."_id", "solutions_tmpmodel"."is_deleted" FROM "solutions_tmpmodel" WHERE NOT "solutions_tmpmodel"."is_deleted" LIMIT 21' - PARAMS = (); args=(); alias=default
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\query.py", line 857, in parse
return handler(self, statement)
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\query.py", line 933, in _select
return SelectQuery(self.db, self.connection_properties, sm, self._params)
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\query.py", line 116, in __init__
super().__init__(*args)
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\query.py", line 62, in __init__
self.parse()
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\query.py", line 152, in parse
self.where = WhereConverter(self, statement)
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\converters.py", line 27, in __init__
self.parse()
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\converters.py", line 119, in parse
self.op = WhereOp(
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\operators.py", line 476, in __init__
self.evaluate()
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\operators.py", line 465, in evaluate
op.evaluate()
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\operators.py", line 258, in evaluate
self.rhs.negate()
AttributeError: 'NoneType' object has no attribute 'negate'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\cursor.py", line 51, in execute
self.result = Query(
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\query.py", line 784, in __init__
self._query = self.parse()
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\sql2mongo\query.py", line 885, in parse
raise exe from e
djongo.exceptions.SQLDecodeError:
Keyword: None
Sub SQL: None
FAILED SQL: SELECT "solutions_tmpmodel"."_id", "solutions_tmpmodel"."is_deleted" FROM "solutions_tmpmodel" WHERE NOT "solutions_tmpmodel"."is_deleted" LIMIT 21
Params: ()
Version: 1.3.6
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\django\db\backends\utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\cursor.py", line 59, in execute
raise db_exe from e
djongo.database.DatabaseError
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\django\db\models\query.py", line 370, in __repr__
data = list(self[: REPR_OUTPUT_SIZE + 1])
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\django\db\models\query.py", line 394, in __iter__
self._fetch_all()
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\django\db\models\query.py", line 1866, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\django\db\models\query.py", line 87, in __iter__
results = compiler.execute_sql(
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\django\db\models\sql\compiler.py", line 1398, in execute_sql
cursor.execute(sql, params)
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\django\db\backends\utils.py", line 103, in execute
return super().execute(sql, params)
s.py", line 89, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\user\AppData\Local\pypoetry\Cache\virtualenvs\test-task-YJIxAxLW-py3.10\lib\site-packages\djongo\cursor.py", line 59, in execute
raise db_exe from e
django.db.utils.DatabaseError
How to find out what is wrong?如何找出问题所在?
Use djongo
's model fields for all fields you have instead of django
fields将djongo
的 model 字段用于您拥有的所有字段,而不是django
字段
from djongo import models
class TmpModel(models.Model):
_id = models.ObjectIdField()
is_deleted = models.BooleanField(default=False)
It seems like an issue with Djongo's Boolean SQL condition parsing (GitHub issue #562) .这似乎是 Djongo 的Boolean SQL 条件解析的问题(GitHub 问题 #562) 。 For now, the solution is to use __in
query:目前,解决方案是使用__in
查询:
TmpModel.objects.filter(is_deleted__in=[False]).all()
This has been fixed in djongo@8587ea7 (as of Dec 2022, there's no planned release ).这已在djongo@8587ea7中修复(截至 2022 年 12 月, 没有计划发布)。
pip install git+https://github.com/doableware/djongo.git@8587ea766e4610da5f31112f7b134699e2d603ee
Workaround for Djongo <= 1.3.6 from doableware/djongo#562 (comment 892486144) : Djongo <= 1.3.6 的解决方法来自doableware/djongo#562(评论 892486144) :
from djongo.base import DatabaseWrapper from djongo.operations import DatabaseOperations class PatchedDatabaseOperations(DatabaseOperations): def conditional_expression_supported_in_where_clause(self, expression): return False DatabaseWrapper.ops_class = PatchedDatabaseOperations
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