Question

如果要选择某种产品，我正在尝试规定一个条件。我正在尝试在模板中规定一个条件if。但是我做错了。请帮助我。

views.py

def product_list(request, category=None, subcategory=None, kind=None):
    if category:
        categories = Category.objects.all()
        category = Category.objects.get(slug=category)
        subcategories = Subcategory.objects.filter(category=category)
        products = Product.objects.filter(category=category, available=True)
        products_quantity = len(Product.objects.filter(category=category, available=True))

        kinds = None
        if subcategory:
            subcategory = Subcategory.objects.get(slug=subcategory)
            kinds = Kind.objects.filter(kind=subcategory)
            products = Product.objects.filter(category=category, subcategory=subcategory, available=True)

            if kind:
                kind = Kind.objects.filter(slug=kind)
                products = Product.objects.filter(category=category, subcategory=subcategory, kind__in=kind, available=True)

        if products:
            paginator = Paginator(products, 8)
            page = request.GET.get('page')
            products = paginator.get_page(page)

        context = {
            'categories':categories,
            'category':category,
            'subcategories':subcategories,
            'subcategory':subcategory,
            'products':products,
            'products_quantity':products_quantity,
            'kinds':kinds
        }

        return render(request, 'shop/product/product_list.html', context)

product_list.html

# Not works
{% if kind %}
    Hello
{% endif %}

但是，如果我规定了这样的条件。这项工作很好

{% if category %}
    Hello
{% endif %}

或者尝试一下。但是不一样

{% if category and subcategory and kind %}
    Hello
{% endif %}

我该如何设置条件？谢谢！

Answer 1

替换您的if语句

{% if kind %}
Hello
{% endif %}

使用

{% if kinds %}
Hello
{% endif %}

在上下文词典中，您以种类的名称声明了键值，但在if语句中，您使用的是种类

为什么这种情况不起作用？ -如果在模板中

1 个答案: