How to show Variation as a product - django

Question

I am trying to show a variation when clicked on its link it displays information as a product
here is my product model
class Product(models.Model):
brand = TreeForeignKey('Brand', verbose_name='brand', related_name='products' , default='')
category = TreeForeignKey('Category', verbose_name='Category', related_name='products' , default='')
title = models.CharField(max_length=120)
description = models.TextField(max_length = 500 ,blank=True ,null=True)
price = models.IntegerField()
active = models.BooleanField(default=True)
is_verified = models.BooleanField(default=False)
in_stock = models.BooleanField(default=False)
slug = models.SlugField(default='')
objects = ProductManager()
here is my variation model
class Variation(models.Model):
VAR_CATEGORIES = (
('size' , 'size'),
('color' , 'color'),
)
product = models.ForeignKey(Product)
category = models.CharField(max_length=120, choices = VAR_CATEGORIES)
title = models.CharField(max_length=120)
price = models.IntegerField()
discount = models.IntegerField(blank=True ,null =True)
active = models.BooleanField(default=True)
quantity = models.IntegerField(null=True , blank=True)
sales_price = models.IntegerField(blank=True ,null =True)
image = models.ImageField(upload_to=image_upload_to)
slug = models.SlugField(default='')
objects = VariationManager()
def get_absolute_url(self):
return reverse("product_detail" , kwargs={"pk":self.pk})
here is my product view
class ProductDetailView(DetailView):
model = Product
template_name = "products/product.html"
#template_name = "<appname>/<modelname>_detail.html"
here is my variation view
class VariationDetailView(DetailView):
model = Variation
template_name = "products/variation.html"
context_object_name = 'variation'
and here is the urls.py
url(r'^(?P<pk>\d+)/$' , ProductDetailView.as_view() , name = 'product_detail'),
url(r'^((?P<pk>\d+)(?:/(?P<slug>[\w\d-]+))?/$' ,VariationDetailView.as_view() , name = 'variation_detail'),
and here is the template
{% for variation in object.variation_set.all %}
<img src = "{{ variation.image.url }}">
{% endfor %}
it does show all the variations of my product but when i click on some variation then it doesnt do anything
where am i wrong?