Question

我正在开发django电子商务项目。将任何其他网址添加到我的html页面single.html（由特定的面包师或制造商显示产品）会产生错误HTTP404。因此，在此single.html页面上会显示产品。我添加了添加到购物车按钮。当我没有在按钮标记中提及add_to_cart的链接时，它会显示页面，当我提到它时给出HTTP404错误

views.py用于展示制造商（在我的情况下是面包师）

def BakerDetail(request, slug):
try:
    baker = Baker.objects.get(slug=slug)
    products = Product.objects.filter(baker=baker)
    context = {
    'baker': baker,
    'products': products
    }
    template = 'bakers/single.html'
    return render(request, template, context)
except:
    raise Http404

single.html

<table class='table'>
<thead>
<th></th>
<th>Products</th>
</thead>
<tbody>
{% for items in products %} 
<tr>
<td></td>
<td>
<a href="{{ items }}">
{{ items }}</a>
{{ items.price }}
<button class="btn btn-primary" href="{% url 'add_to_cart' %}">Add To Cart</button>
</td>
<td></td>
</tr>
{% endfor %}
</tbody>
</table>

查看add_to_cart

def Add_To_Cart(request, slug):
request.session.set_expiry(120000)
try:
    the_id = request.session['cart_id']
except:
    new_cart = Cart()
    new_cart.save()
    request.session['cart_id'] = new_cart.id
    the_id = new_cart.id

cart = Cart.objects.get(id=the_id)

try:
    product = Product.objects.get(slug=slug)
except Product.DoesNotExist:
    pass
except:
    pass

urls.py

url(r'^cart/(?P<slug>[\w-]+)/$', views.Add_To_Cart, name='add_to_cart'),

Answer 1

您需要将slug传递到url标记，告诉它要添加哪个元素。

{% url 'add_to_cart' slug=items.slug %}

（注意如果你调用变量＆＃34; item＆＃34;，而不是＆＃34; items＆＃34;）会更清楚。

Answer 2

这不是回答你的问题，但这些都在困扰我！更严重的是，这些小细节加起来会让你的工作更加努力。

def BakerDetail(...) =＆gt; def baker_detail(...)

def Add_To_Cart(...) =＆gt; def add_to_car(...)

try: baker = Baker.objects.get(slug=slug) ... except ... =＆gt; baker = get_object_or_404(Baker, slug=slug) 见：https://docs.djangoproject.com/en/1.8/topics/http/shortcuts/#get-object-or-404

{% for items in products %} =＆gt; {% for item in products %}

为了清楚你的观点看起来像这样（行为是一样的）：

def baker_detail(request, slug):
    baker = get_object_or_404(Baker, slug=slug)
    products = Product.objects.filter(baker=baker)
    return render(request, 'bakers/single.html', {
        'baker': baker,
        'products': products
    })

Django错误与get_absolute_url

2 个答案: