Re: using return upper

Hello,
I found a solution for the simplified version of my problem.
In models.py, I use:

def __unicode__(self):
oses_installed =
u','.join(self.operatingsystemused.all().values_list('operatingsystem',
flat=True))
return ("%s" % (oses_installed))

However, it doesn't works in admin.py
Following lines give me (None):

def renvoi_os(maintenance):
oses_installed =
u','.join(maintenance.ordi.operationsystemused_set.all().values_list('operatingsystem',flat=True))
return ("%s" % (oses_installed))

class MaintenanceAdmin(admin.ModelAdmin):
list_display = (renvoi_os,)

Thanks for your help

On 2 fév, 03:31, Rainy <andrei....@gmail.com> wrote:
> On Feb 1, 6:12 pm, makayabou <makaya...@gmail.com> wrote:
>
>
>
> > Hello,
> > I try to simplify the problem.
>
> > This model gives me a (None) result:
>
> > class OperatingSystem (models.Model):
> >         operatingsystem = CharField (max_length=30, blank=True, null=True)
> >         def __unicode__(self):
> >                 return "%s" % (self.operatingsystem)
> > class Ordi(models.Model):
> >         architecture = CharField (max_length=30, blank=True, null=True)
> >         operatingsystemused = ManyToManyField(OperatingSystem, null=True,
> > blank=True)
>
> >         def __unicode__(self):
> >                 oses_installed =
> > u','.join(self.operationsystemused_set.all().values('operatingsystem',flat= True))
> >                 return ("%s" % (oses_installed)).upper()
>
> > Or also the same with that last line:
>
> >                  return models.join(list(self.operatingsystemused))
>
> > What can I do??
>
> > thanks
>
> How about
> self.operatingsystemused.all().values('operatingsystem',flat= True)
>
>  -ak

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