CODEWITHSUNDEEP
djangopython-3.xsession
alex
alex

Reputation: 79

Django - how can I save cart items in a session

in my django ecommerce I want to save session data for users not logged in. About saving cart ind DB, updating and retrieving it for logged users it's all ok, but how I can proceed for guest users? I tried in this way, but I think this is not a good solution: I save id cart in session and whole cart in database..Could you help me?

This is my views.py:

def update_cart(request, slug):
    if request.user.is_authenticated:
      #ok here...
    else:
        try:
            the_id = request.session["cart_id"]
        except:
            new_cart = Cart()
            product = Product.objects.get(slug=slug)
            new_cart.save()
            request.session["cart_id"] = new_cart.id
            new_cart.products.add(product)
            new_cart.save()
            return HttpResponse("<h1>okkk!</h1>") 



        cart = Cart.objects.get(id = the_id)
        product = Product.objects.get(slug=slug)
        if not product in cart.products.all():
            cart.products.add(product)
            cart.save()    
            return HttpResponseRedirect(reverse("cart"))
        else:
            cart.products.remove(product)
            return HttpResponseRedirect(reverse("cart"))

and they are my Cart model and Product model:

    class Cart(models.Model):
        user = models.OneToOneField(User, on_delete="CASCADE", null=True)
        products = models.ManyToManyField(Product, blank=True)
        updated = models.DateTimeField(auto_now=True)
        timestamp = models.DateTimeField(auto_now_add=True)


        def __str__(self):
            return str(self.id)

class Product(models.Model):
    title = models.CharField(max_length=120)
    description = models.TextField(null=True, blank=True)
    price = models.DecimalField(decimal_places=2, max_digits=100, default=29.99)
    image = models.FileField(upload_to="products/images", blank=True, null=True)
    quantity = models.IntegerField(default=1)
    slug = models.SlugField(unique=True)
    timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)
    updated = models.DateTimeField(auto_now_add=False, auto_now=True)
    active = models.BooleanField(default=True)

    class Meta:
        unique_together = ('title', 'slug')

    def __str__(self):
        return self.title

Upvotes: 1

Views: 6872

Answers (1)

Lag11
Lag11

Reputation: 542

Use a dictionary to populate all the necessary information of a product like this

product_document = {
   'title': product.title,
   'price': product.price
}

And you can use this to store in the session with the key 'cart' which is an empty dictionary at the beginning and perform adding, updating and deleting of product_document as you would do with any dictionary element.

For example adding a product to the cart would be:

request.session['cart'] = {}
request.session['cart'][str(product.id)] = product_document

Upvotes: 2

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