got completed

shoppinglyx/app/templates/app/productdetail.html

@@ -13,14 +13,29 @@ <h2>Product Title: {{product.title}}</h2>
    <p>{{product.description}}</p> <br>
    <h4>Rs {{product.discount_price}} <small class="fw-light text-decoration-line-through">Rs {{product.selling_price}}</small></h4> <br>
 
+{% if request.user.is_authenticated %}
+    {% if item_already_in_cart %}
+    <a href="{% url 'showcart' %}" class="btn btn-warning shadow px-5 py-2 ms-4">Go to cart</a>
+    {% else %}
+    <form action="/add-to-cart" class="d-inline">
+        <input type="hidden" name="prod_id" value="{{product.id}}" id="prod_id">
+        <button type="submit" class="btn btn-primary shadow px-5 py-2">Add to cart</button>
+    </form>
+
+
+    {% endif %}
+    {% endif %}
+
+{% if not request.user.is_authenticated %}
 <form action="/add-to-cart" class="d-inline">
     <input type="hidden" name="prod_id" value="{{product.id}}" id="prod_id">
     <button type="submit" class="btn btn-primary shadow px-5 py-2">Add to cart</button>
 </form>
+{% endif %}
 
 
    <!-- <a href="{% url 'add-to-cart' %}" class="btn btn-primary shadow px-5 py-2">Add to Cart</a> -->
-   <a href="{% url 'buy-now' %}" class="btn btn-danger shadow px-5 py-2 ms-4">Buy Now</a>
+   <a href="{% url 'showcart' %}" class="btn btn-danger shadow px-5 py-2 ms-4">Buy Now</a>
    <h5 class="mt-5">Available Offers</h5>
    <ul>
     <li>Bank Offer 5% Unlimited Cashback on Flipkart Axis Bank Credit</li>

shoppinglyx/app/views.py

@@ -27,7 +27,10 @@ def get(self,request):
 class ProductDetailView(View):
     def get(self,request,pk):
         product = Product.objects.get(pk=pk)
-        return render(request, 'app/productdetail.html',{'product':product})
+        item_already_in_cart = False
+        if request.user.is_authenticated:          
+          item_already_in_cart = Cart.objects.filter(Q(product=product.id) & Q(user=request.user)).exists()
+        return render(request, 'app/productdetail.html',{'product':product,'item_already_in_cart':item_already_in_cart})
 
 
 @login_required