... を強制的に設定する際に使用できます。 読み込むフィールドのセットを強制的に設定するには fields 引数を使用できます。 たとえば、 update() の呼び出しによって期待する更新が行われたかをテストするため、以下のようなテストを書くことができます。 def test_update_res ... ult ( self ): obj = MyModel . objects . create ( val = 1 ) MyModel . objects . filter ( pk = obj . pk ) . update ( val = F ( "val" ) + 1 ) # At this point obj.val is still 1, but the value in the database # was updated to 2. The object ... 's updated value needs to be reloaded # from the database. obj . refresh_from_db () self . assertEqual ( obj . val , 2 ) When a defe ... ... を強制的に設定する際に使用できます。 読み込むフィールドのセットを強制的に設定するには fields 引数を使用できます。 たとえば、 update() の呼び出しによって期待する更新が行われたかをテストするため、以下のようなテストを書くことができます。 def test_update_res ... ult ( self ): obj = MyModel . objects . create ( val = 1 ) MyModel . objects . filter ( pk = obj . pk ) . update ( val = F ( "val" ) + 1 ) # At this point obj.val is still 1, but the value in the database # was updated to 2. The object ... 's updated value needs to be reloaded # from the database. obj . refresh_from_db () self . assertEqual ( obj . val , 2 ) When a defe ... ... . filter ( entries__gt = 5 ) alias() can be used in conjunction with annotate() , exclude() , filter() , order_by() , and update() . To use an aliased expression with other methods (e.g. aggregate() ), you must promote it to an annotation: Blog . obje ... ntry . objects . all () # queries the database with the 'backup' alias >>> Entry . objects . using ( "backup" ) select_for_update() ¶ select_for_update ( nowait = False , skip_locked = False , of = () , no_key = False ) ¶ トランザクションが終了するまで ... 行をロックし、サポートされているデータベース上で SELECT ... FOR UPDATE SQL 文を生成する QuerySet を返します。 例: from django.db import transaction entries = Entry . objects . select_for_update ... ... . filter ( entries__gt = 5 ) alias() can be used in conjunction with annotate() , exclude() , filter() , order_by() , and update() . To use an aliased expression with other methods (e.g. aggregate() ), you must promote it to an annotation: Blog . obje ... ntry . objects . all () # queries the database with the 'backup' alias >>> Entry . objects . using ( "backup" ) select_for_update() ¶ select_for_update ( nowait = False , skip_locked = False , of = () , no_key = False ) ¶ トランザクションが終了するまで ... 行をロックし、サポートされているデータベース上で SELECT ... FOR UPDATE SQL 文を生成する QuerySet を返します。 例: from django.db import transaction entries = Entry . objects . select_for_update ... ... 4.0.x, and, depending on timing, perhaps a 4.1.x. Regular version releases: either a final release (e.g. 4.1) or a bugfix update (e.g. 4.1.1). Pre-releases: e.g. 4.2 alpha, beta, or rc. The short version of the steps involved is: If this is a security ... lease. Proofread the release notes, looking for organization and writing errors. Draft a blog post and email announcement. Update version numbers and create the release artifacts. Create the new Release in the admin on djangoproject.com . Set the prope ... active flag for each release in the admin on djangoproject.com . Post the blog entry and send out the email announcements. Update version numbers post-release in stable branch(es). Add stub release notes for the next patch release in main and backport. ... ... 4.0.x, and, depending on timing, perhaps a 4.1.x. Regular version releases: either a final release (e.g. 4.1) or a bugfix update (e.g. 4.1.1). Pre-releases: e.g. 4.2 alpha, beta, or rc. The short version of the steps involved is: If this is a security ... lease. Proofread the release notes, looking for organization and writing errors. Draft a blog post and email announcement. Update version numbers and create the release artifacts. Create the new Release in the admin on djangoproject.com . Set the prope ... active flag for each release in the admin on djangoproject.com . Post the blog entry and send out the email announcements. Update version numbers post-release in stable branch(es). Add stub release notes for the next patch release in main and backport. ... ... did not correctly convert their arguments: FilePathField GenericIPAddressField IPAddressField These three fields have been updated to convert their arguments to the correct types before querying. Additionally, developers of custom model fields are now ... ments -- will be advised to ensure they perform appropriate manual type conversions prior to executing queries. select_for_update() requires a transaction ¶ Historically, queries that use select_for_update() could be executed in autocommit mode, outsid ... n. Django 1.6 introduced database-level autocommit; since then, execution in such a context voids the effect of select_for_update() . It is, therefore, assumed now to be an error and raises an exception. This change was made because such errors can be ... ... オブジェクトを必要としませんが、クエリセットを使用します: def make_published ( modeladmin , request , queryset ): queryset . update ( status = "p" ) 注釈 最高のパフォーマンスを得るために、クエリセットの update メソッド を使用しています。他のタイプのアクシ ... ( description = "Mark selected stories as published" ) def make_published ( modeladmin , request , queryset ): queryset . update ( status = "p" ) 注釈 これには見覚えがあるかもしれません。admin の list_display オプションも、登録されたコールバック関数に ... ( description = "Mark selected stories as published" ) def make_published ( modeladmin , request , queryset ): queryset . update ( status = "p" ) class ArticleAdmin ( admin . ModelAdmin ): list_display = [ "title" , "status" ] ordering = [ "title" ] a ... ... オブジェクトを必要としませんが、クエリセットを使用します: def make_published ( modeladmin , request , queryset ): queryset . update ( status = "p" ) 注釈 最高のパフォーマンスを得るために、クエリセットの update メソッド を使用しています。他のタイプのアクシ ... ( description = "Mark selected stories as published" ) def make_published ( modeladmin , request , queryset ): queryset . update ( status = "p" ) 注釈 これには見覚えがあるかもしれません。admin の list_display オプションも、登録されたコールバック関数に ... ( description = "Mark selected stories as published" ) def make_published ( modeladmin , request , queryset ): queryset . update ( status = "p" ) class ArticleAdmin ( admin . ModelAdmin ): list_display = [ "title" , "status" ] ordering = [ "title" ] a ... ... がる可能性がある QuerySet.update_or_create() の競合状態を修正しました ( #29499 )。 目次 Django 1.11.16 リリースノート バグ修正 前のトピックへ Django 1.11.1 ... ースノート 次のトピックへ Django 1.11.15 リリースノート 関連キーワード 修正 損失 バグ リリースノート October 可能性 QuerySet update create 競合 クイック検索 Last update: 2026年10月09日 « previous | up | next » ... 2026年10月08日