#28600: Add prefetch related support to RawQuerySet -------------------------------------+------------------------------------- Reporter: Adnan Umer | Owner: Adnan | Umer Type: New feature | Status: assigned Component: Database layer | Version: master (models, ORM) | Severity: Normal | Resolution: Keywords: | Triage Stage: Accepted Has patch: 1 | Needs documentation: 1 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 0 | UI/UX: 0 -------------------------------------+------------------------------------- Changes (by Carlton Gibson):
* cc: Carlton Gibson (added) Comment: Replying to [comment:10 Adnan Umer]: > Replying to [comment:9 Simon Charette]: > > Unless `__bool__` and `__len__` support is required for `prefetch_related` to work they should be added/tracked in another PR/ticket. > > Got that. Moving that to separate PR. Did that happen? (I [https://github.com/django/django/pulls?utf8=✓&q=is%3Apr+author%3Auadnan can't see another PR by Adnan]) I ask because the warning in [https://github.com/django/django/blob/7a22d9f75125e3cfbea0979a876efe4634f6fe05/docs/topics/db/sql.txt#L88-L97 docs/db/sql.txt] about this will also need updating: `__bool__()` and `__len__()` are not defined in `RawQuerySet`, and thus all ``RawQuerySet`` instances are considered `True`. The reason these methods are not implemented in `RawQuerySet` is that implementing them without internal caching would be a performance drawback and adding such caching would be backward incompatible. -- Ticket URL: <https://code.djangoproject.com/ticket/28600#comment:20> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/064.0068e183212b2ca46a2db67e0bd542ce%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.