update cart logic

backend/order/serializers.py

@@ -1,5 +1,5 @@
 from rest_framework import serializers
-from .models import OrderItemModel, OrderModel, DiscountCode
+from .models import OrderItemModel, OrderModel, DiscountCode, Cart, CartItem
 from product.serializers import ProductVariantSerialzier, AttributeValueSerialzier, ProductImageSerailizer
 from account.serializers import UserAddressSerializer
 from product.models import ProductVariant
@@ -52,38 +52,37 @@ class OrderItemSerailzier(serializers.ModelSerializer):
     final_price = serializers.SerializerMethodField()
     discount = serializers.SerializerMethodField()
     class Meta:
-        model = OrderItemModel
-        exclude = ('order',)
-        read_only_fields = ('order', 'product', 'discount_percent')
+        model = CartItem
+        exclude = ('cart',)
+        read_only_fields = ('cart', 'product', 'discount_percent')
     def get_product(self, obj):
-        return ProductVariantSerialzier(instance=obj.product, context={'request': self.context.get('request')}).data
+        return ProductVariantSerialzier(instance=obj.product_variant, context={'request': self.context.get('request')}).data
 
     def get_discount_amount(self, obj):
-        discount_amount  = int(obj.price * (obj.product.discount / 100))
-        return f'{(discount_amount * obj.quantity):,.0f} تومان'
+        return f'{obj.item_discount_amount:,.0f} تومان'
 
     def get_final_price(self, obj):
-        final_price = obj.price - int(obj.price * (obj.product.discount / 100))
-        return f'{(final_price * obj.quantity):,.0f} تومان'
+        return f'{obj.price_after_discount:,.0f} تومان'
 
     def get_price(self, obj):
-        return f'{(obj.price * obj.quantity):,.0f} تومان'
+        return f'{obj.price_before_discount:,.0f} تومان'
 
     def get_discount(self, obj):
-        return obj.product.discount
-
+        return obj.product_variant.discount
 
+from django.conf import settings
 
 class CartSerializer(serializers.ModelSerializer):
     items = OrderItemSerailzier(many=True)
     cart_total = serializers.SerializerMethodField()
-    tax = serializers.SerializerMethodField()
+    tax_amount = serializers.SerializerMethodField()
     final_price = serializers.SerializerMethodField()
     discount_code = serializers.SerializerMethodField()
+    items_discount_amount = serializers.SerializerMethodField()
     address = UserAddressSerializer()
     class Meta:
-        model = OrderModel
-        fields = [ 'discount_code', 'items', 'cart_total', 'tax', 'final_price', 'address']
+        model = Cart
+        fields = ['items_discount_amount', 'discount_code', 'items', 'cart_total', 'tax_amount', 'final_price', 'address']
 
 
     def get_discount_code(self, obj):
@@ -91,20 +90,23 @@ class CartSerializer(serializers.ModelSerializer):
             return {
                 'code': f'{obj.discount_code.code}',
                 'percent': obj.discount_code.percent,
-                'amount': f'{10000:,.0f} تومان'
+                'amount': f'{obj.discount_code_amount:,.0f} تومان'
             }
         else:
             return None
 
 
-    def get_tax(self, obj):
-        return f'{1000:,.0f} تومان'
+    def get_tax_amount(self, obj):
+        return f'{obj.tax_amount:,.0f} تومان'
 
     def get_cart_total(self, obj):
-        return f'{10000:,.0f} تومان'
+        return f'{obj.cart_total:,.0f} تومان'
+
+    def get_items_discount_amount(self, obj):
+        return f'{obj.items_discount_amount:,.0f} تومان'
 
     def get_final_price(self, obj):
-        return f'{8000:,.0f} تومان'
+        return f'{obj.final_price:,.0f} تومان'
     
 
 class OrderListSerializer(serializers.ModelSerializer):