custom_filter.py

gistfile1.py

class NumberOfImagesFilter(admin.SimpleListFilter):
    """Filter based on numbers of images.
    == 7
    > 6
    < 7
    """
    title = _('Number of Images')
    parameter_name = 'imgcount'

    def lookups(self, request, model_admin):
        return (
            ('7', _('7')),
            ('lebihdari7', _('Lebih dari 7')),
            ('kurangdari7', _('Kurang dari 7')),
        )

    def queryset(self, request, queryset):
        if self.value() == '7':
            return queryset.annotate(num_images=Count('image')).filter(num_images=7)
        elif self.value() == 'lebihdari7':
            return queryset.annotate(num_images=Count('image')).filter(num_images__gt=7)
        elif self.value() == 'kurangdari7':
            return queryset.annotate(num_images=Count('image')).filter(num_images__lt=7)