Opened 10 years ago

Closed 10 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: master
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: UI/UX:

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 Changed 10 years ago by Gary Wilson

Description: modified (diff)

fixed formatting it ticket description.

comment:2 Changed 10 years ago by Gary Wilson

Resolution: invalid
Status: newclosed

But using get_latest_by will use descending ordering automatically, see

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