#23940: ORM should allow model fields named "exact" -------------------------------------+------------------------------------- Reporter: zhiyajun11 | Owner: Type: Bug | Status: new Component: Database layer | Version: master (models, ORM) | Severity: Normal | Resolution: Keywords: | Triage Stage: Accepted Has patch: 0 | Needs documentation: 0 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 0 | UI/UX: 0 -------------------------------------+-------------------------------------
Comment (by jarshwah): After doing some investigation with user phood on IRC, the problem seems local to fields called `exact` only. We traced the problem to: https://github.com/django/django/blob/d450af8a2687ca2e90a8790eb567f9a25ebce85b/django/db/models/fields/related.py#L684 The related manager adds a filter called `model__exact` to fetch the correct related record. Unfortunately, other parts of the code interpret this as targeting the field exact rather than an exact match for the model (usually pk). Changing: {{{ self.core_filters = {'%s__exact' % rel_field.name: instance} # old self.core_filters = {'%s__pk' % rel_field.name: instance.pk} # new }}} Fixes the this problem, but breaks the test: foreign_object.tests.MultiColumnFKTests.test_reverse_query_returns_correct_result So, still some work to do here. If there are any multi column fk experts around, it'd be good to hear from you. -- Ticket URL: <https://code.djangoproject.com/ticket/23940#comment:19> 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/068.bce5144c8ecae5472772bce3172ed296%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.