Django 1.6：在另一个模板中显示特定模型对象

Question

如果我有一个一对多的关系，我有很多产品，而一些特定的产品将只与一个网站相关，那么我正在处理一个应用程序。

在我的主页上是我从我的网站模型中显示我列出的网站的地方一个产品页面（另一个模板），其中我的 产品模型 与该特定网站相关的所有对象仅显示。

这是我的情况的用户流程

主页 --> 点击网站 ('/browse/website_slug') ---> 转到 --> 产品页面（仅填充来自相关点击的 slug 的产品对象）

我的 product_extend 应用中的 Models.py

产品型号：

class Product(models.Model):
    """
    The product structure for the application, the products we scrap from sites will model this and save directly into the tables.
    """

    product_name = models.CharField(max_length=254, verbose_name=_('Name'), null=True, blank=True)
    product_price = CurrencyField( verbose_name=_('Unit price') )
    product_slug_url = models.URLField(max_length=200,  null=True, blank=True)
    product_category = models.CharField(max_length=254, blank=True, null=True)
    product_img = models.ImageField('Product Image', upload_to='product_images', null=True, blank=True) 
    product_website_url = models.URLField(max_length=200,  null=True, blank=True) 
    product_website_name = models.CharField(max_length=254, blank=True, null=True)

    #For Admin Purposes, to keep track of new and old items in the database by administrative users
    date_added = models.DateTimeField(auto_now_add=True, null=True, blank=True, verbose_name=_('Date added'))
    last_modified = models.DateTimeField(auto_now=True, null=True, blank=True, verbose_name=_('Last modified') )

    #For Admin Purposes, to make sure an item is active by administrative users
    active = models.BooleanField(default=True, verbose_name=_('Active') )

    # Foreign Key
    website = models.ForeignKey(Website, null=True, related_name='website_to_product')

网站模型

class Website(models.Model):
    name = models.CharField(max_length=254, blank=True, null=True, unique=True)
    description = models.TextField(null=True, blank=True)
    website_slug = models.SlugField(verbose_name=_('Website Slug'), unique=True)
    site_logo = models.ImageField('Websites Logo', upload_to='website_logo_images', null=True, blank=True) 

    menswear = models.BooleanField(default=False, verbose_name=_('Menswear'))
    womenswear = models.BooleanField(default=False, verbose_name=_('Womenswear'))


    active = models.BooleanField(default=True, verbose_name=_('Active'))

我的 product_extend 应用程序中的视图

view.py

 class ProductView(ListView):

    context_object_name = 'product_list'
    template_name = 'product_extend/_productlist.html'
    # queryset = ProductExtend.objects.filter(id=1)
    model = Product

    def get_context_data(self, **kwargs):
        context = super(ProductView, self).get_context_data(**kwargs)
        return context

class WebsiteView(ListView):

context_object_name = 'home'
template_name = 'homepage.html'
queryset = Website.objects.order_by('name')
model = Website

def get_context_data(self, **kwargs):
    context = super(WebsiteView, self).get_context_data(**kwargs)
    return context

模板

Homepage.html

  {% for object in home %}
        <li class="page_tiles-home home-website-reveal"> 
            <a href="browse/website_slug" data-title="{{object.name}}" data-description="{{object.description}}">
                <img alt="{{object.name}}" src="{{MEDIA_URL}}{{object.site_logo}}" />
            </a> 
        </li>  
    {% endfor %}

Product.html

{% for object in product_list %}
    <li class="col n-4">
        <figure class="rollover site">
            <div class="scrap-likes"><span class="icon-heart"></span></div>
            <img src="{{object.product_img}}" width="470" height="700">
           <!--  <div class="scrap-from"> Scrapped from:<a class="scrap-site" target="_blank" href="{{object.product_website_url}}">{{object.product_website_name}}</a></div> -->
            <div class="scrap-designer"> Scrapped from: <a class="scrap-site" target="_blank" href="{{object.product_website_url}}">{{object.product_website_name}}</a></div>
            <div class="scrap-title">{{object.product_name }}, <span class="scrap-price">${{object.product_price}}</span></div>
            <a class="scrap-buy" target="_blank" href="{{object.product_slug_url}}">View Item</a>
        </figure>
    </li>
    {% endfor %}

网址

我的应用 urls.py

  urlpatterns = patterns('',
     url(r"^$", WebsiteView.as_view(), name="home"),
     url(r'^browse/', include('product_extend.urls')),
    )

我的应用 product_extend urls.py

  urlpatterns = patterns('',
     ??? No clue what to put ???
   )

Answer 1

你可以在product_extend urls.py中添加这个：

urlpatterns = patterns('',
    url(r'^(?P<website_slug>[\w]+)$', ProductView.as_view(), name='products_list'),
)

然后在ProductView 中重写get_queryset 方法以使用website_slug 过滤查询集：

class ProductView(ListView):

    context_object_name = 'product_list'
    template_name = 'product_extend/_productlist.html'
    # queryset = ProductExtend.objects.filter(id=1)
    model = Product

    def get_context_data(self, **kwargs):
        context = super(ProductView, self).get_context_data(**kwargs)
        return context

    def get_queryset(self):
        qs = super(ProductView, self).get_queryset()
        return qs.filter(website__website_slug__exact=self.kwargs['website_slug'])

Answer 2

看了两遍，想想自己想要的是：

url(r'^product/website/(?P<slug>)$', "your_view_to_peform_product_search_for_slug_website_here"),

在你看来“HTML”

href="product/website/{{ website.slug }}"

这样的……