How to remove a product from the shopping cart?
Welcome to a new lesson where we will optimize our e-commerce! This time we will learn how to implement the functionality to remove products from the shopping cart in our application. So far, by clicking on an icon, we add products to the cart. But how to deal with those unwanted items? Here we show you how to do it efficiently.
How to identify the product to delete?
In order to remove a specific product, we need to identify it within our cart list. The key to achieving this is to use a unique ID for each product, which will allow us to know exactly which item has been pushed. So, let's start there.
How to implement the handleDelete
function?
To delete products efficiently, we create a function called handleDelete
. This function will take care of deleting a product every time the 'X' is pressed in the cart. Here is a snippet of what it should look like:
function handleDelete(productId) { const filteredProducts = contextCartProducts.filter((product) => product.id !== productId); setCartProducts(filteredProducts);}
- Filter Function: Uses
filter
to create a new list excluding the product with the provided ID.
- Update Context: Next, we update
cartProducts
in the context to reflect the changes.
How to propagate the function in the component?
It is crucial that this function is properly propagated across components. This way it is linked to the user's interactions with the cart. To do this, we perform the following steps:
-
Add the Function as Prop: In the OrderCart
component, we pass handleDelete
as a property.
<OrderCart handleDelete={handleDelete}/>
-
Bind Function to onClick Event: We set an onClick
on the delete icon (XmarkIcon) to execute the function.
const handleClick = () => handleDelete(productId);
-
Provide the Product ID: You have to make sure that each call to handleDelete
includes the respective product ID.
How to verify the deletion in the browser?
Once these changes have been implemented, it is necessary to verify the operation in the browser. By pressing the X, the product should be immediately removed from the cart thanks to the global context. The real-time update of the cart view is a sign that the feature is integrating correctly.
What's next after removing products?
Now that we have the functionality to remove products successfully implemented, it is a good time to encourage students to continue to improve their application. The next step would be to add up the total products in the cart and display it in the interface, an exciting move towards a fully functional e-commerce.
Go ahead and share your experiences in the comments! Just as adding products was a big step, removing them efficiently will be a big step forward in your development project.
Want to see more contributions, questions and answers from the community?