#19258: ModelAdmin customized queryset with extra option
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Reporter: honyczek | Owner: nobody
Type: Bug | Status: new
Component: contrib.admin | Version: 1.4
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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If you customize queryset in ModelAdmin:
{{{
from app.models import License, Server
from django.contrib import admin
class LicenseAdmin(admin.ModelAdmin):
def queryset(self, request):
qs = super(LicenseAdmin, self).queryset(request)
return qs.extra(select={'usage_count': "SELECT COUNT(id) FROM
app_server WHERE license_id=license.id",})
list_display = ('name','description','product_key', 'usage_count')
admin.site.register(License, LicenseAdmin)
}}}
and want to use ''extra'' field called ''usage_count'', you get an error:
{{{
ImproperlyConfigured at /admin/app/license/
LicenseAdmin.list_display[3], 'usage_count' is not a callable or an
attribute of 'LicenseAdmin' or found in the model 'License'.
}}}
Django Admin interface ignores extra field ''usage_count'' from QuerySet,
or validates columns by another way, which doesn't include QuerySet
changes.
--
Ticket URL: <https://code.djangoproject.com/ticket/19258>
Django <https://code.djangoproject.com/>
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