Django: ManyToMany URL in Vorlage

Question

Ich kann keine URL my category title in Homepage hinzufügen. Da ist mein Code und Fehler. Was ich anstelle von {{ c.get_absolute_url }} hinzufügen kann. Was ich hier vermisse?

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 %} 

ERROR

NoReverseMatch at/

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

Answer 1

In Ihrer Modelle Sie category_url nennen, aber in Ihrem urls Sie category_detail haben, ersetzen Sie die get_absolute_url Funktion dafür:

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