Python DiscountBase.add_to_class示例

示例#1

文件： models.py 项目： pyarun/django-shop-discounts

                amount,
            )

    class Meta:
        verbose_name = _('Bulk discount')
        verbose_name_plural = _('Bulk discounts')


# filter function
def category_product_filter(discount, queryset):
    """
    Allow discount type to be filtered by category.
    """
    if not discount.categories.count():
        return queryset
    ids = [c.id for c in discount.categories.all()]
    return queryset.filter(models.Q(Book___categories__id__in=ids))


DiscountBase.register_product_filter(category_product_filter)

#add categories field to BulkDiscount
DiscountBase.add_to_class(
    'categories',
    models.ManyToManyField(
        Category,
        verbose_name=_('Categories'),
        blank=True,
        null=True,
        help_text=_('Limit discount to selected categories')))

示例#2

文件： models.py 项目： eserge/django-shop-discounts

            to_append = (self.get_name(), amount)
            cart_item.extra_price_fields.append(to_append)

    class Meta:
        verbose_name = _('Bulk discount')
        verbose_name_plural = _('Bulk discounts')


# filter function
def category_product_filter(discount, queryset):
    """
    Allow discount type to be filtered by category.
    """
    if not discount.categories.count():
        return queryset
    ids = [c.id for c in discount.categories.all()]
    return queryset.filter(models.Q( Book___categories__id__in=ids))

DiscountBase.register_product_filter(category_product_filter)

#add categories field to BulkDiscount
DiscountBase.add_to_class('categories', 
        models.ManyToManyField(Category, 
            verbose_name=_('Categories'),
            blank=True,
            null=True,
            help_text=_('Limit discount to selected categories')
            ))