Refs #28370 -- Removed support for the context arg of Field.from_db_value() and Expression.convert_value().
Per deprecation timeline.
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@ -6,7 +6,6 @@ from django.contrib.postgres.validators import ArrayMaxLengthValidator
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from django.core import checks, exceptions
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from django.db.models import Field, IntegerField, Transform
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from django.db.models.lookups import Exact, In
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from django.utils.inspect import func_supports_parameter
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from django.utils.translation import gettext_lazy as _
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from ..utils import prefix_validation_error
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@ -112,9 +111,7 @@ class ArrayField(CheckFieldDefaultMixin, Field):
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if value is None:
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return value
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return [
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self.base_field.from_db_value(item, expression, connection, {})
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if func_supports_parameter(self.base_field.from_db_value, 'context') # RemovedInDjango30Warning
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else self.base_field.from_db_value(item, expression, connection)
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self.base_field.from_db_value(item, expression, connection)
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for item in value
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]
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@ -7,7 +7,6 @@ from django.conf import settings
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from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache
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from django.db import DatabaseError, connections, models, router, transaction
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from django.utils import timezone
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from django.utils.inspect import func_supports_parameter
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class Options:
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@ -85,9 +84,6 @@ class DatabaseCache(BaseDatabaseCache):
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converters = (connection.ops.get_db_converters(expression) + expression.get_db_converters(connection))
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for key, value, expires in rows:
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for converter in converters:
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if func_supports_parameter(converter, 'context'): # RemovedInDjango30Warning
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expires = converter(expires, expression, connection, {})
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else:
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expires = converter(expires, expression, connection)
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if expires < timezone.now():
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expired_keys.append(key)
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@ -160,9 +156,6 @@ class DatabaseCache(BaseDatabaseCache):
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expression = models.Expression(output_field=models.DateTimeField())
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for converter in (connection.ops.get_db_converters(expression) +
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expression.get_db_converters(connection)):
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if func_supports_parameter(converter, 'context'): # RemovedInDjango30Warning
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current_expires = converter(current_expires, expression, connection, {})
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else:
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current_expires = converter(current_expires, expression, connection)
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exp = connection.ops.adapt_datetimefield_value(exp)
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@ -1,5 +1,4 @@
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import collections
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import functools
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import re
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import warnings
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from itertools import chain
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@ -14,10 +13,7 @@ from django.db.models.sql.constants import (
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from django.db.models.sql.query import Query, get_order_dir
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from django.db.transaction import TransactionManagementError
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from django.db.utils import DatabaseError, NotSupportedError
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from django.utils.deprecation import (
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RemovedInDjango30Warning, RemovedInDjango31Warning,
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)
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from django.utils.inspect import func_supports_parameter
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from django.utils.deprecation import RemovedInDjango31Warning
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FORCE = object()
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@ -1015,20 +1011,7 @@ class SQLCompiler:
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backend_converters = self.connection.ops.get_db_converters(expression)
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field_converters = expression.get_db_converters(self.connection)
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if backend_converters or field_converters:
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convs = []
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for conv in (backend_converters + field_converters):
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if func_supports_parameter(conv, 'context'):
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warnings.warn(
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'Remove the context parameter from %s.%s(). Support for it '
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'will be removed in Django 3.0.' % (
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conv.__self__.__class__.__name__,
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conv.__name__,
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),
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RemovedInDjango30Warning,
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)
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conv = functools.partial(conv, context={})
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convs.append(conv)
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converters[i] = (convs, expression)
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converters[i] = (backend_converters + field_converters, expression)
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return converters
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def apply_converters(self, rows, converters):
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@ -244,6 +244,9 @@ to remove usage of these features.
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* ``HttpRequest.xreadlines()`` is removed.
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* Support for the ``context`` argument of ``Field.from_db_value()`` and
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``Expression.convert_value()`` is removed.
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See :ref:`deprecated-features-2.1` for details on these changes, including how
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to remove usage of these features.
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@ -28,12 +28,3 @@ class CashModel(models.Model):
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def __str__(self):
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return str(self.cash)
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class CashFieldDeprecated(CashField):
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def from_db_value(self, value, expression, connection, context):
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return super().from_db_value(value, expression, connection)
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class CashModelDeprecated(models.Model):
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cash = CashFieldDeprecated()
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@ -1,17 +0,0 @@
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from django.test import TestCase
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from django.utils.deprecation import RemovedInDjango30Warning
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from .models import Cash, CashModelDeprecated
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class FromDBValueDeprecationTests(TestCase):
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def test_deprecation(self):
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msg = (
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'Remove the context parameter from CashFieldDeprecated.from_db_value(). '
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'Support for it will be removed in Django 3.0.'
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)
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CashModelDeprecated.objects.create(cash='12.50')
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with self.assertWarnsMessage(RemovedInDjango30Warning, msg):
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instance = CashModelDeprecated.objects.get()
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self.assertIsInstance(instance.cash, Cash)
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