... eturn values can change (e.g. datetime.now or uuid.uuid4 ): >>> import uuid >>> class UUIDCommentForm ( CommentForm ): ... identifier = forms . UUIDField ( initial = uuid . uuid4 ) ... >>> f = UUIDCommentForm () >>> f . get_initial_for_field ( f . fields [ ... "identifier" ], "identifier" ) UUID('972ca9e4-7bfe-4f5b-af7d-07b3aa306334') >>> f . get_initial_for_field ( f . fields [ "identifier" ... ], "identifier" ) UUID('1b411fab-844e-4dec-bd4f-e9b0495f04d0') >>> # Using BoundField.initial, for comparison >>> f [ "identifier" ] . in ... ... eturn values can change (e.g. datetime.now or uuid.uuid4 ): >>> import uuid >>> class UUIDCommentForm ( CommentForm ): ... identifier = forms . UUIDField ( initial = uuid . uuid4 ) ... >>> f = UUIDCommentForm () >>> f . get_initial_for_field ( f . fields [ ... "identifier" ], "identifier" ) UUID('972ca9e4-7bfe-4f5b-af7d-07b3aa306334') >>> f . get_initial_for_field ( f . fields [ "identifier" ... ], "identifier" ) UUID('1b411fab-844e-4dec-bd4f-e9b0495f04d0') >>> # Using BoundField.initial, for comparison >>> f [ "identifier" ] . in ... ... and column_name_converter() are removed. Third party database backends may need to instead implement DatabaseIntrospection.identifier_converter() . In that case, the constraint names that DatabaseIntrospection.get_constraints() returns must be normalized b ... y identifier_converter() . SQL generation for indexes is moved from Index to SchemaEditor and these SchemaEditor methods are added: _cr ... ... and column_name_converter() are removed. Third party database backends may need to instead implement DatabaseIntrospection.identifier_converter() . In that case, the constraint names that DatabaseIntrospection.get_constraints() returns must be normalized b ... y identifier_converter() . SQL generation for indexes is moved from Index to SchemaEditor and these SchemaEditor methods are added: _cr ... ... When using a bound method as a receiver, multiple registrations can be prevented by supplying a unique dispatch_uid . This identifier will usually be a string, although any hashable object will suffice. The receiver will only be bound to the signal once fo ... lue: from django.core.signals import request_finished request_finished . connect ( my_receiver , dispatch_uid = "my_unique_identifier" ) シグナルの定義と送信 ¶ アプリケーションは信号インフラを利用し、独自の信号を提供できます。 カスタムシグナルを使うべきタイ ... ... When using a bound method as a receiver, multiple registrations can be prevented by supplying a unique dispatch_uid . This identifier will usually be a string, although any hashable object will suffice. The receiver will only be bound to the signal once fo ... lue: from django.core.signals import request_finished request_finished . connect ( my_receiver , dispatch_uid = "my_unique_identifier" ) シグナルの定義と送信 ¶ アプリケーションは信号インフラを利用し、独自の信号を提供できます。 カスタムシグナルを使うべきタイ ... ... ユニークである (たとえば、 unique=True を定義内で設定する) 必要があります。 以下の例では、フィールドを一意に指定するために、 identifier フィールドが使われています。 class MyUser ( AbstractBaseUser ): identifier = models . CharField ( max_length = 40 , unique ... = True ) ... USERNAME_FIELD = "identifier" EMAIL_FIELD ¶ ユーザーモデルにあるメールのフィールド名を文字列で記述します。この値は get_email_field_name() で返されます。 ... ... s and Spatial Reference Systems). [ 3 ] Typically, SRID integer corresponds to an EPSG ( European Petroleum Survey Group ) identifier. However, it may also be associated with custom projections defined in spatial database's spatial reference systems table. ... ... cution of a Task . Attributes of TaskResult cannot be modified. task ¶ The Task the result was enqueued for. id ¶ A unique identifier for the result, which can be passed to Task.get_result() . The format of the id will depend on the backend being used. Tas ... ... ユニークである (たとえば、 unique=True を定義内で設定する) 必要があります。 以下の例では、フィールドを一意に指定するために、 identifier フィールドが使われています。 class MyUser ( AbstractBaseUser ): identifier = models . CharField ( max_length = 40 , unique ... = True ) ... USERNAME_FIELD = "identifier" EMAIL_FIELD ¶ ユーザーモデルにあるメールのフィールド名を文字列で記述します。この値は get_email_field_name() で返されます。 ... 2026年10月08日