如何在具有多个模型的 django 详细信息视图中正确使用带有外键的过滤器方法

Question

我有两个模型，一个模型用于存储博客文章，另一个模型用于获取评级和 cmets。下面是我的两个模型

# Models Code
class Products(models.Model):
    name = models.CharField(max_length=50)
    img = models.ImageField(upload_to='productImage')
    CATEGORY = (
        ('Snacks','Snacks'),
        ('Juice','Juice'),
    )
    category = models.CharField(max_length=50, choices=CATEGORY)
    description = models.TextField()
    price = models.FloatField()
    review = models.TextField()

# Rating Model
class Rating(models.Model):
    product = models.ForeignKey(Products, on_delete=models.CASCADE)
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    stars = models.IntegerField(validators=[MinValueValidator(1),MaxValueValidator(5)])
    comment = models.TextField()


#Views Code
class ProductListView(ListView):
    model = Products
    template_name = 'products.html'
    context_object_name ='Products'

class ProductDetailView(DetailView):
    model = Products

    def get_context_data(self, **kwargs):
        # Call the base implementation first to get a context
        context = super().get_context_data(**kwargs)
        context['Rating'] = Rating.objects.filter(self.product_id) # How can i get the comments only for that specific product?
        return context

详细查看我应该如何过滤以仅获取该特定产品的 cmets？

Answer 1

不需要在ProductDetailView中写单独的上下文，你可以在模板中这样做

{% for rate in object.rating_set.all %}
 {{ rate.comment }}
{% endfor %}