... e (either '80s' or '90s') # to decide how to filter the queryset. if self . value () == "80s" : return queryset . filter ( birthday__gte = date ( 1980 , 1 , 1 ), birthday__lte = date ( 1989 , 12 , 31 ), ) if self . value () == "90s" : return queryset . f ... ilter ( birthday__gte = date ( 1990 , 1 , 1 ), birthday__lte = date ( 1999 , 12 , 31 ), ) class PersonAdmin ( admin . ModelAdmin ): list_fi ... ere actually is anyone born in the corresponding decades. """ qs = model_admin . get_queryset ( request ) if qs . filter ( birthday__gte = date ( 1980 , 1 , 1 ), birthday__lte = date ( 1989 , 12 , 31 ), ) . exists (): yield ( "80s" , _ ( "in the eighties ... ... e (either '80s' or '90s') # to decide how to filter the queryset. if self . value () == "80s" : return queryset . filter ( birthday__gte = date ( 1980 , 1 , 1 ), birthday__lte = date ( 1989 , 12 , 31 ), ) if self . value () == "90s" : return queryset . f ... ilter ( birthday__gte = date ( 1990 , 1 , 1 ), birthday__lte = date ( 1999 , 12 , 31 ), ) class PersonAdmin ( admin . ModelAdmin ): list_fi ... ere actually is anyone born in the corresponding decades. """ qs = model_admin . get_queryset ( request ) if qs . filter ( birthday__gte = date ( 1980 , 1 , 1 ), birthday__lte = date ( 1989 , 12 , 31 ), ) . exists (): yield ( "80s" , _ ( "in the eighties ... ... b import admin from django.db import models class Person ( models . Model ): name = models . CharField ( max_length = 50 ) birthday = models . DateField () @admin . display ( description = "Birth decade" ) def decade_born_in ( self ): decade = self . bir ... rt admin from django.db import models class Person ( models . Model ): first_name = models . CharField ( max_length = 50 ) birthday = models . DateField () @admin . display ( boolean = True ) def born_in_fifties ( self ): return 1950 <= self . birthday . ... ンジリストページでリンクされます。 class PersonAdmin ( admin . ModelAdmin ): list_display = [ "first_name" , "last_name" , "birthday" ] list_display_links = [ "first_name" , "last_name" ] 以下の例では、チェンジリストページのグリッドにはリンクがなくなります ... ... b import admin from django.db import models class Person ( models . Model ): name = models . CharField ( max_length = 50 ) birthday = models . DateField () @admin . display ( description = "Birth decade" ) def decade_born_in ( self ): decade = self . bir ... rt admin from django.db import models class Person ( models . Model ): first_name = models . CharField ( max_length = 50 ) birthday = models . DateField () @admin . display ( boolean = True ) def born_in_fifties ( self ): return 1950 <= self . birthday . ... ンジリストページでリンクされます。 class PersonAdmin ( admin . ModelAdmin ): list_display = [ "first_name" , "last_name" , "birthday" ] list_display_links = [ "first_name" , "last_name" ] 以下の例では、チェンジリストページのグリッドにはリンクがなくなります ... ... "John" , last_name = "Lennon" ) except Person . DoesNotExist : obj = Person ( first_name = "John" , last_name = "Lennon" , birthday = date ( 1940 , 10 , 9 )) obj . save () ここで、同時リクエストにより、同じパラメータで Person を保存しようとする試みが複数 ... とができます: obj , created = Person . objects . get_or_create ( first_name = "John" , last_name = "Lennon" , defaults = { "birthday" : date ( 1940 , 10 , 9 )}, ) Any keyword arguments passed to get_or_create() — except an optional one called defaults — w ... ートカットです。たとえば次のようなものです: defaults = { "first_name" : "Bob" } create_defaults = { "first_name" : "Bob" , "birthday" : date ( 1940 , 10 , 9 )} try : obj = Person . objects . get ( first_name = "John" , last_name = "Lennon" ) for key , val ... ... "John" , last_name = "Lennon" ) except Person . DoesNotExist : obj = Person ( first_name = "John" , last_name = "Lennon" , birthday = date ( 1940 , 10 , 9 )) obj . save () ここで、同時リクエストにより、同じパラメータで Person を保存しようとする試みが複数 ... とができます: obj , created = Person . objects . get_or_create ( first_name = "John" , last_name = "Lennon" , defaults = { "birthday" : date ( 1940 , 10 , 9 )}, ) Any keyword arguments passed to get_or_create() — except an optional one called defaults — w ... ートカットです。たとえば次のようなものです: defaults = { "first_name" : "Bob" } create_defaults = { "first_name" : "Bob" , "birthday" : date ( 1940 , 10 , 9 )} try : obj = Person . objects . get ( first_name = "John" , last_name = "Lennon" ) for key , val ... 2026年10月08日