Python Django在url>视图中缺少参数

我当前在尝试转到url…/polls/products/

TypeError at /polls/products/

productindex() takes exactly 2 arguments (1 given)

我已经测试了附加在视图上的url，我确信它可以正常工作，所以我猜我的视图有问题

models.py

class Product(models.Model):
    product_name = models.CharField(max_length=200)
    product_description = models.TextField()
    def __unicode__(self):
        return self.product_name

class Image(models.Model):
    product_image = models.ForeignKey(Product)
    image = models.ImageField(upload_to='image')

views.py

def productindex(request, product_image_id):
    product = get_object_or_404(Product, pk=product_image_id)
    return render(request, 'polls/products.html', {'product': product})

url.py

from django.conf.urls import patterns, url

from polls import views

urlpatterns = patterns('',
    url(r'products/$', views.productindex, name='productindex'),
)

视图需要请求和产品pk。现在它得到的是请求，而不是pk

下面是将product.pk传递给视图的一种方法

URL.py

from django.conf.urls import patterns, url

from polls import views

urlpatterns = patterns('',
    url(r'products/(?P<pk>\d+)/$', views.productindex, name='productindex'),
)

你的html应该是这样的

<a href="{% url 'productindex' product.pk %}">{{ product }}</a>