Something

class add_server(models.Model):
    location = models.CharField(maxlength=11)
    hostname = models.CharField(maxlength=256)
    date = models.DateTimeField('Date_instal')
    bare_server = models.CharField(maxlength=7)
    dvb_board = models.CharField(maxlength=12)
    mpeg_board = models.CharField(maxlength=8)
    pci_modem = models.CharField(maxlength=16)
    cpu = models.CharField(maxlength=16)
    converter = models.IntegerField()
    class Admin:
        fields = (
            ('<u>Configurer le nouveau serveur</u>', {'fields': ('location', 'hostname', 'date')}),
            ('Ajouter des pieces au serveur', {'fields': ('bare_server', 'dvb_board', 'mpeg_board', 'pci_modem', 'cpu', 'converter'), 'classes': 'collapse'}),
            )
        list_display = ('location', 'hostname', 'date')
        list_filter = ['hostname', 'location', 'dvb_board', 'mpeg_board', 'pci_modem', 'cpu', 'converter']
        search_fields = ['hostname', 'location', 'date', 'bare_server', 'dvb_board', 'mpeg_board', 'pci_modem', 'cpu', 'converter']
        date_hierarchy = 'date'