No, 1.11. This project is still on Python 2.7 but I do think we'll have it on Python 3(.5) before the year is over.
On Fri, 1 Mar 2019 at 21:16, Simon Charette <[email protected]> wrote: > > Hello HM, > > I know that some changes have been made to avoid unnecessary foreign key > rebuilds on some option changes. > > Are you experiencing this on 2.1 and 2.2 pre release? > > Simon > > Le vendredi 1 mars 2019 02:40:01 UTC-5, HM a écrit : >> >> I added "related_name" to an exiting ForeignKey and checked with >> "django-admin sqlmigrate" what would be done. >> >> It seems that the foreign key constraint is dropped, then the exact >> same constraint is added back. Why? >> >> Example: If we have the classes: >> >> class Wall(models.Model): >> .. >> >> class Door(models.Model): >> ..wall = models.ForeignKey(Wall) >> >> and change Door.wall to models.ForeignKey(Wall, related_name='walls'), then: >> >> Prior to this, there exist (postgres) the constraint: >> >> "app_door_wall_id_45647_fk_app_wall" FOREIGN KEY (wall_id) REFERENCES >> app_wall(id) DEFERRABLE INITIALLY DEFERRED. >> >> "django_admin sqlmigrate" reports: >> >> SET CONSTRAINTS "app_door_wall_id_45647_fk_app_wall" IMMEDIATE; ALTER >> TABLE "app_door" DROP CONSTRAINT >> "app_door_wall_id_45647_fk_app_wall"; >> ALTER TABLE "app_door" ADD CONSTRAINT >> "app_door_wall_id_45647_fk_app_wall" FOREIGN KEY ("wall_id") >> REFERENCES "app_wall" ("id") DEFERRABLE INITIALLY DEFERRED; >> >> After running the migration, which is run as there's stuff in the log, >> there exists seemingly the same constraint as before: >> >> "app_door_wall_id_45647_fk_app_wall" FOREIGN KEY (wall_id) REFERENCES >> app_wall(id) DEFERRABLE INITIALLY DEFERRED. >> >> Why waste a connection this way? >> >> -- >> HM > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/a1d9f7a9-be2a-41d5-8a43-4b468ad4a547%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CACQ%3DrrcnDAs%2BK59__zo0aMp0Xfk_aOz5okq-Hn6aacSYM8Mntg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
