CODEWITHSUNDEEP
pythondjangodjango-modelsdjango-rest-frameworkdjango-templates
santosh Chauhan
santosh Chauhan

Reputation: 77

How to add multiple number of models in one cart (Django)

I'm using PostgresSQL as DB, Django as backend and HTML, CSS, Javascript as Frontend. I have Multiple number of product Models and I want to add all those models in one cart. So, I had Successfully add One of the model in cart. But

I want to add different products like Refrigerator, Fans, Washing Machine, ... etc. in one cart

So, how it will work?

The Codes goes here:

models.py

class Customer(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    full_name = models.CharField(max_length=200)
    joined_on = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.full_name


class Regrigeratior(models.Model):
    image_src = models.URLField(max_length=300,null=True, blank=True)
    name = models.CharField(max_length=200, db_index=True, verbose_name="processor name")
    brand = models.CharField(max_length = 300, null=True, blank=True)
    ....

    def __str__(self):
        return self.name

class Fans(models.Model):
    image_src = models.URLField(max_length=300,null=True, blank=True)
    name = models.CharField(max_length=200, db_index=True, verbose_name="processor name")
    brand = models.CharField(max_length = 300, null=True, blank=True)
    ....

    def __str__(self):
        return self.name
.
.
.

class Cart(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.SET_NULL, null=True, blank=True)
    total = models.PositiveIntegerField(default=0)
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return "Cart: " + str(self.id)

#                                      
class CartProduct(models.Model):
    cart = models.ForeignKey(Cart, on_delete=models.CASCADE)
    refrigerator = models.ForeignKey(Refrigerator, on_delete=models.CASCADE)
    rate = models.PositiveIntegerField()
    quantity = models.PositiveIntegerField()
    subtotal = models.PositiveIntegerField()

    def __str__(self):
        return "Cart: " + str(self.cart.id) + " CartProduct: " + str(self.id)

I have succesfully add Refrigerator Model in the cart

views.py

class AddToCartView(TemplateView):
    template_name = "status.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        refrigerator_id = self.kwargs['ref_id']
        refrigerator_obj = Refrigerator.objects.get(id = refrigerator_id)
        cart_id = self.request.session.get("cart_id", None)
        if cart_id:
            cart_obj = Cart.objects.get(id = cart_id)
            this_product_in_cart = cart_obj.cartproduct_set.filter(refrigerator = refrigerator_obj)
        
            if this_product_in_cart.exists():
                cartproduct = this_product_in_cart.last()
                cartproduct.quantity += 1
                cartproduct.subtotal += refrigerator_obj.price
                cartproduct.save()
                cart_obj.total += refrigerator_obj.price
                cart_obj.save()
            else:
                cartproduct = CartProduct.objects.create(
                    cart = cart_obj, refrigerator = refrigerator_obj, rate = refrigerator_obj.price, quantity = 1, subtotal = refrigerator_obj.price)
                cart_obj.total += processor_obj.price
                cart_obj.save() 
        else:
            cart_obj = Cart.objects.create(total=0)
            self.request.session['cart_id'] = cart_obj.id
            cartproduct = CartProduct.objects.create(
                cart = cart_obj, refrigerator = refrigerator_obj, rate = refrigerator_obj.price, quantity = 1, subtotal = refrigerator_obj.price)
            cart_obj.total += refrigerator_obj.price
            cart_obj.save()

        return context

So, Now I have Fan as a Model (and many more models). So how it will get add to the same cart?

Upvotes: 0

Views: 674

Answers (2)

Kashish-2001
Kashish-2001

Reputation: 19

You should make a new model for products with fields image_src, name and brand. Making different models for different Categories is not effective.

Upvotes: 1

Kiran
Kiran

Reputation: 579

I have designed a basic model here

   class Customer(models.Model):
        user = models.OneToOneField(User, on_delete=models.CASCADE)
        full_name = models.CharField(max_length=200)
        joined_on = models.DateTimeField(auto_now_add=True)
    
        def __str__(self):
            return self.full_name
    
    
    class ProductCategory(models.Model):
        """
        storing product category to link with every product
        a category like Fan, Refrigerator...etc
        """
        name = models.CharField(max_length=200, db_index=True, verbose_name="product category")
    
        def __str__(self):
            return self.name
    
    class Product(models.Model):
        image_src = models.URLField(max_length=300,null=True, blank=True)
        name = models.CharField(max_length=200, db_index=True, verbose_name="processor name")
        category = model.ForeignKey(ProducyCategory,null=True,blank=True,on_delet=model.SET_NULL
        brand = models.CharField(max_length = 300, null=True, blank=True)
        ....
    
        def __str__(self):
            return self.name
   
    
    class CartItem(models.Model):
        """
         Cart contain User and  Product
        """
        customer = models.ForeignKey(Customer, on_delete=models.SET_NULL, null=True, blank=True)
        product = models.ForeignKey(Product,null=True,blank=True,on_delet=model.SET_NULL)
        total = models.PositiveIntegerField(default=0)
        created_at = models.DateTimeField(auto_now_add=True)

    
        def __str__(self):
            return "Cart: " + str(self.id)

Upvotes: 1

Related Questions