filter in queryset

Hi

need a help with this queryset problem
i got into my models.


models.py
---------

class Classi(models.Model):
    classi = models.CharField('Class Name', max_length='20', unique=True)
    internet = models.BooleanField(default=None)

using Calssi can do:
create: A, B. C

class Prof(models.Model):
    prof = models.ForeignKey(User)
    classi = models.ManyToManyField(Classi)

i can create a simple User: teacher, and can belong to A, C  Classi

class MAC(models.Model):
    classi = models.ForeignKey(Classi)
    name = models.CharField('dev_name', max_length=64, default='unnamed', null=True, blank=True)
    mac = MACAddressField('MAC', blank=False, unique=True)
    internet = models.BooleanField(default=None)

i create simple macs objects where those belongs to Classi

after that i got

admin.py
--------

class ClassAdmin(admin.ModelAdmin):
 def get_queryset(self, request):
        qs = super(ClassAdmin, self).get_queryset(request)
        if request.user.is_staff and request.user.is_superuser:
            return qs
        return qs.filter(prof__prof=request.user) 

with this I can see only Classi A and B if I logged as User with A and B classrooms set it and that's ok

but:

--------------------------------------------
i'm testing 4 macs:  Class A: 1mac ,   Class B: 2mac,   Class C: 1mac

when i define:

class MacAdmin(admin.ModelAdmin):
    def get_queryset(self, request):
        qs = super(MACAdmin, self).get_queryset(request)
        if request.user.is_staff and request.user.is_superuser:
            return qs
        return qs.filter(classi_id__mac=request.user)

for make a test I create an user belogs to Class A and B so would be see 3 macs on list_display
but only got 1

on debug mode, qs variable i can see the 4 macs,   i need to know filter it to get only that A and B because is filtered by user wich only belogs to A and B class

thanxs

--

Antonio Peña
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