基于 Django 类的视图和通用视图详细信息使用

Posted 2023-02-24

【中文标题】基于 Django 类的视图和通用视图详细信息使用

【英文标题】：Django Class based view and generic view details usage

【发布时间】：2013-12-13 01:47:41

【问题描述】：

我正在编写一个用于库存管理的 django 应用程序。我希望 django 处理如下所示的网址

"foo:8000/stores/Electrical Store/" 其中“Electrical Store”是由一个视图（另一个视图）生成的，该视图显示商店列表。 http 响应是使用 ListView 通用视图生成的 - 也可以使用模板视图生成，我尝试了不同的替代方案，同时尝试熟悉基于类的视图的工作原理。

我的问题是，当尝试让 django 呈现带有“商店详细信息”的 http 页面和商店中的产品列表时，我在下面收到 404 错误：

^stores/(?P\w+)/$ [name='stores_product'] 当前 URL，Electrical Store/，与其中任何一个都不匹配。

而且我不确定我的代码哪里出了问题——基本上，文档没有提供足够的信息或示例来展示他们试图传达的概念。我在下面提供了相关的模型和视图。请帮忙...

# models
    # PRODUCT MODEL
    class Product(models.Model):
       # Desription - ID
       name = models.CharField(primary_key = True, unique = True, max_length = 100)
       description = models.TextField(max_length = 200)

       # Amount per containment unit
       amount_per_containment_unit = models.IntegerField("Unit Count", default = 0)

       def __unicode__(self):
          # return unicode(self.datetime)
          return unicode(self.name)

       class Meta:
          ordering = ["name"]


    # STORE MODEL
    # A Store has a name, an address, a phone number, a group of users who act as curators and a list of stock
    # items.
    class Store(models.Model):
       name = models.CharField(primary_key = True, max_length = 100)
       address = models.CharField(max_length = 100)
       phone = models.CharField(max_length = 100)
       curators = models.ManyToManyField(User, verbose_name = "Curator", blank = True, null = True)
       products = models.ManyToManyField(Product, through = "StoreProduct", blank = True, null = True)

       # Curator list
       def curator_list(self):
          return ",\n".join([obj.first_name for obj in self.curators.all()])

       def __unicode__(self):
          # return unicode(self.datetime)
          return unicode(self.name)

       class Meta:
          ordering = ["name"]


    # StoreProduct MODEL
    class StoreProduct(models.Model):
       store = models.ForeignKey(Store)
       product = models.ForeignKey(Product)
       quantity =  models.IntegerField(default = 0)
       total = models.IntegerField(default = 0)

       class Meta:
          unique_together = (("store", "product"),)

       def __init__(self, *args, **kwargs):
          super(StoreProduct, self).__init__(*args, **kwargs)
          if self.total == None and self.store and self.product and not self.pk:
             self.total = self.product.amount_per_containment_unit * self.quantity

       def save(self, *args, **kwargs):
          if self.store and self.product and self.quantity:
             self.total = self.product.amount_per_containment_unit * self.quantity

          super(StoreProduct, self).save(*args, **kwargs)
# views

    class StoreList(TemplateView):
       # Template
       template_name = "inventory/store/store_list.html"

       # Context
       def get_context_data(self, **kwargs):
          context = super(StoreList, self).get_context_data(**kwargs)
          context["store_list"] = Store.objects.all()

          return context


    class StoreProductList(TemplateView):
       template_name = "inventory/store/store_products.html"

       # Context
       def get_context_data(self, **kwargs):
          # Objects
          self.store_inst = Store.objects.get(pk = self.kwargs["name"])
          self.queryset = StoreProduct.objects.filter(store = self.store_inst)

          print self.store_inst

          context = super(StoreList, self).get_context_data(**kwargs)

          # Store primary key
          context["store"] = self.store_inst
          context["store_products"] = self.queryset

【参考方案1】：

404 可能是因为 URL 中有一个空格字符被编码为 %20，这与正则表达式的 \w 部分不匹配。