Opened 16 years ago

Closed 16 years ago

#6366 closed (invalid)

Meta field get_latest_by does not support fields with a - (Do get decending order)

Reported by: Shabda Owned by: nobody
Component: Core (Other) Version: dev
Severity: Keywords: Models, Meta
Cc: shabda.raaj@… Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description (last modified by Gary Wilson)

Model objects have a order_by method to order, which can take arguments of the form '-attribute_name' to get descending order ordering. This syntax is not supported by get_latest_by in Meta.

Code to validate this,

class FeaturedPage(models.Model):
    ordering = models.IntegerField(default = 0, unique = True)

featured_pages = FeaturedPage.objects.all().order_by('-ordering')

This works, but if you add 

    class Meta:
        get_latest_by = '-ordering'

and do FeaturedPage.objects.latest(),
It raises OperationalError.

Change History (2)

comment:1 by Gary Wilson, 16 years ago

Description: modified (diff)

fixed formatting it ticket description.

comment:2 by Gary Wilson, 16 years ago

Resolution: → invalid
Status: new → closed

But using get_latest_by will use descending ordering automatically, see ​http://www.djangoproject.com/documentation/models/get_latest/.

Note: See TracTickets for help on using tickets.
Back to Top