Django 使用ManyToManyField作为url中的slug

我正在尝试让我的url包含产品的类别和名称。我没有使用

ForeignKey

为产品指定类别，而是选择了

ManyToManyField

，因为有些产品属于多个类别。如果我导航到说

http://127.0.0.1:8000/products/shirts/tshirt/

。我在select_related:“category”中得到的

字段名无效。选项包括：（无）

当我转到类别详细信息页面（如

http://127.0.0.1:8000/products/shirts/

未找到带有参数“（“'tshirt'）”的“model\u detail\u view”的反向。尝试了1个模式：[“产品/（？P[^/]+）/（？P[^/]+）/$”]

型号.py

class Product(models.Model): 
    title = models.CharField(max_length=80)
    category = models.ManyToManyField(Category)
    model_slug = AutoSlugField(null=True, default=None,
                         unique=True, populate_from='title')

    class Meta:
        verbose_name_plural = "Products"

    def __str__(self):
        return self.title

def model_category_detail_view(request, category_slug):
    category = get_object_or_404(Category, category_slug=category_slug)
    context = {
        "products": Product.objects.filter(category__category_slug=category_slug),
    }
    return render(request=request,
                  template_name='main/category_detail.html', context=context)

def model_detail_view(request, category_slug, model_slug):
    products = Product.objects.select_related('category').get(
        category__category_slug=category_slug, model_slug=model_slug)
    context = {
        "products": products,
    }
    return render(request=request, template_name='main/model_detail.html', context=context)

path("products/<str:category_slug>/<str:model_slug>/", views.model_detail_view, name="model_detail_view"),

视图.py

class Product(models.Model): 
    title = models.CharField(max_length=80)
    category = models.ManyToManyField(Category)
    model_slug = AutoSlugField(null=True, default=None,
                         unique=True, populate_from='title')

    class Meta:
        verbose_name_plural = "Products"

    def __str__(self):
        return self.title

def model_category_detail_view(request, category_slug):
    category = get_object_or_404(Category, category_slug=category_slug)
    context = {
        "products": Product.objects.filter(category__category_slug=category_slug),
    }
    return render(request=request,
                  template_name='main/category_detail.html', context=context)

def model_detail_view(request, category_slug, model_slug):
    products = Product.objects.select_related('category').get(
        category__category_slug=category_slug, model_slug=model_slug)
    context = {
        "products": products,
    }
    return render(request=request, template_name='main/model_detail.html', context=context)

path("products/<str:category_slug>/<str:model_slug>/", views.model_detail_view, name="model_detail_view"),

url.py

class Product(models.Model): 
    title = models.CharField(max_length=80)
    category = models.ManyToManyField(Category)
    model_slug = AutoSlugField(null=True, default=None,
                         unique=True, populate_from='title')

    class Meta:
        verbose_name_plural = "Products"

    def __str__(self):
        return self.title

def model_category_detail_view(request, category_slug):
    category = get_object_or_404(Category, category_slug=category_slug)
    context = {
        "products": Product.objects.filter(category__category_slug=category_slug),
    }
    return render(request=request,
                  template_name='main/category_detail.html', context=context)

def model_detail_view(request, category_slug, model_slug):
    products = Product.objects.select_related('category').get(
        category__category_slug=category_slug, model_slug=model_slug)
    context = {
        "products": products,
    }
    return render(request=request, template_name='main/model_detail.html', context=context)

path("products/<str:category_slug>/<str:model_slug>/", views.model_detail_view, name="model_detail_view"),

path（“products//”，views.model\u detail\u view，name=“model\u detail\u view”），

模板

{% for product in products %}
    <a class="btn btn-outline" href="{% url 'main:model_detail_view' product.category.category_slug product.model_slug %}"><i class="fa fa-arrow-circle-right"></i>View Model</a>
{% endfor %}

{%用于产品中的产品%}
{%endfor%}

类别

是一个多对多字段，您应该将其传递给

预回迁相关的

而不是您需要使用的m2m字段。谢谢。我现在可以直接访问产品页面，但是如果我使用hrefs访问产品的类别详细信息页面，我会得到一个错误。我更新了我的问题以包含更多代码