class Photo(models.Model):
    equipment=models.ForeignKey(Equipment, blank=True, null=True, on_delete=models.SET_NULL)
    photo=models.ImageField(upload_to='/path')
    
    class Meta:
        db_table='equipment_photos'
        verbose_name_plural = 'equipment_photos'

class CreateEquipmentPhotoView(CreateView):
    form_class=EquipmentPhotoFormSet
    template_name='equipment/add_photo.html'
    
    def get_form_kwargs(self, *args,  **kwargs):
        kwargs = super(CreateEquipmentPhotoView, self).get_form_kwargs()
        kwargs['pk'] = self.kwargs['pk']
        kwargs['request'] = self.request
        return kwargs
    
    def get_queryset(self):
        return Photo.objects.filter(equipment__owner=self.request.user)
    
    def get_success_url(self):
        return reverse_lazy('galary')

EquipmentPhotoFormSet=modelformset_factory(Photo, extra=5)