python - Django:模板中的ManyToMany URL

我无法在主页中添加category title的URL。有我的代码和错误。我可以添加什么而不是{{ c.get_absolute_url }}。我在这里想念什么？

models.py

class Category(models.Model):

    title = models.CharField(max_length=120, unique=True)
    slug = models.SlugField(unique=True)
    description = models.TextField(null=True, blank=True)
    is_active = models.BooleanField(default=True)
    timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)

    class Meta(object):
        verbose_name_plural = 'Categories'

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse("category_url", kwargs={"slug": self.slug })


class Product(models.Model):

    name = models.CharField(max_length=120, unique=True)
    description = models.TextField(blank=True, null=True)
    price = models.DecimalField(decimal_places=2, max_digits=20)
    is_active = models.BooleanField(default=True)
    slug = models.SlugField(max_length=200, unique=True)
    categories = models.ManyToManyField('Category', blank=True)
    stock = models.IntegerField()
    timestamp = models.DateTimeField(auto_now_add=True)
    images = models.ImageField(upload_to='images', blank=True)

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse("product_detail", kwargs={"slug": self.slug})

views.py

class HomePageView(ListView):
    model = Product
    context_object_name = 'product_list'
    template_name = 'products/index.html'

    def get_queryset(self):
        return Product.objects.all()

urls.py

url(r'^$', HomePageView.as_view(),
    name='home'),
url(r'^category/(?P<slug>[-\w]+)/$',
    CategoryProductList.as_view(),
    name='category_detail'),
url(r'^(?P<slug>[-\w]+)/$',
    ProductPageView.as_view(),
    name='product_detail'),

index.html

{% for product in product_list %}
  <a href="{{ product.get_absolute_url }}">{{ product.name }}</a>

  {% for c in product.categories.all %}
      <a href="{{ c.get_absolute_url }}">{{ c.title }}</a>
  {% endfor %}

  {{ product.description }}
{% endfor %}

错误

NoReverseMatch at /

Reverse for 'category_url' with arguments '()' and keyword arguments '{'slug': 'vans'}' not found. 0 pattern(s) tried: []

最佳答案

在模型中，您调用category_url，但是在您的网址中您拥有category_detail，为此，请替换get_absolute_url函数：

def get_absolute_url(self):
    return reverse("category_detail", kwargs={"slug": self.slug})

关于python - Django:模板中的ManyToMany URL，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39393011/