Hello,
With your stuff, it still shows me (None).
You are right, Ordi means Ordinateur (computer)
Florian
On 1 fév, 13:40, Tom Evans <tevans...@googlemail.com> wrote:
> On Tue, Feb 1, 2011 at 10:32 AM, makayabou <makaya...@gmail.com> wrote:
> > Hello,
> > I'm trying to modify my admin.py from my app "ordis":
>
> > from ordis.models import Ordi, Maintenance, OperatingSystem
> > from django.contrib import admin
>
> > #class MaintenanceAdmin(admin.ModelAdmin):
> > #list_display = (???) here I would like to see my Computer id, and
> > the OS installed on it
>
> > def renvoi_os(Ordi):
> > #return ("%d" % (Ordi.id)).upper()
> > return ("%d %d" % (Ordi.id, Ordi.operatingsystemused)).upper()
> > class MaintenanceAdmin(admin.ModelAdmin):
> > list_display = (renvoi_os,)
>
> The function renvoi_os seems to take an 'Ordi' (ordinateur?) object,
> but you have associated it with MaintenanceAdmin, which is associated
> with Maintenance, not an Ordi, so the renvoi_os function will raise an
> exception when you attempt to access the 'operatingsystemused'
> attribute, which exists on Ordi instances, not Maintenance instances.
>
> Further more, 'operatingsystemused' is not a simple attribute of Ordi,
> its a ManyToMany, which you are trying to display as a decimal number
> ('%d' in your format string).
>
> This should work:
>
> def renvoi_os(maintenance):
> oses_installed = u',
> '.join(maintenance.ordi.operationsystemused_set.all().values('operatingsystem',
> flat=True))
> return ("%d %s" % (maintenance.ordi.id, oses_installed)).upper()
>
> class MaintenanceAdmin(admin.ModelAdmin):
> list_display = (renvoi_os,)
>
> Cheers
>
> Tom
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