Create a Shopping Cart with Laravel 6 - Part 2

As I promised before, this is the second part of the article that I publish on creating a shopping cart with Laravel. In the previous one, we have completed some functionalities of the cart. They are add products to the cart and view cart. Now today I will show you how to implement the following functionalities to make it complete.

• Remove a product from cart
• Update cart quantity
• Clear the whole cart

If you didn't read my previous article, the links is given below. That is a must that is to be read before this article!

LINK:
https://salitha94.blogspot.com/2019/11/create-shopping-cart-with-laravel-6-part-1.html

Let's start!!!

Step 1 - Create edit and remove functionalities for a product

The above picture shows the view of the cart we have implemented! So, for every product there's a delete button(trash icon) and a edit button(pen icon). These two buttons are responsible for the tasks meant by their own names. We have already configured the routes for these functionalities in routes/web.php file. Open it and check whether it contains the following routes.

Route::post('/update', 'CartController@update')->name('cart.update');
Route::post('/remove', 'CartController@remove')->name('cart.remove');

Open the CartController and just add the below code for implementation.

    public function remove(Request $request){
        \Cart::remove($request->id);
        return redirect()->route('cart.index')->with('success_msg', 'Item is removed!');
    }

    public function update(Request $request){
        \Cart::update($request->id,
            array(
                'quantity' => array(
                    'relative' => false,
                    'value' => $request->quantity
                ),
        ));
        return redirect()->route('cart.index')->with('success_msg', 'Cart is Updated!');
    }

Remove function takes ID from the incoming request and then it is passed to Cart package function called remove. Then route is redirected to the cart page with a alert message that indicating the product is removed!
Within the function for update, we have to perform an update only to change the quantity value. So it takes quantity from the request and send it to the Cart package update function. As I told before, route us then redirected.

Step 2 - Create function to clear the cart completely

Now we are going to implement the functionality to clear the whole cart at once instead of clearing one by one. For this we have to establish a new route. Configure the following route in your routes/web.php file.
NOTE: The routes MUST contain the names as you have mentioned them in your cart views. CHECK them! If you have done with me, you are pretty much safe!

Route::post('/clear', 'CartController@clear')->name('cart.clear');

Then we have to only add just 2 lines for CartController implementation. That is the magic of Laravel packages guys! They always simplify the implementations for developers and reduce the workload. Open CartController.php and modify the code.

    public function clear(){
        \Cart::clear();
        return redirect()->route('cart')->with('success_msg', 'Car is cleared!');
    }

Just one line do the job and the other is for redirecting to the cart page! How amazing is it? Imagine if we have to implement this from scratch?

So, basically now our cart is completed guys!

As I promised at the beginning of the previous article, I have completed the below functionalities related to the shopping cart.

• View cart page
• View cart contents in drop-down
• Add products to cart
• Remove products from cart
• Update quantity of products
• Clear cart

Hope you could complete the tutorial with me! If you have encountered any error, you can just drop a comment in the comments section! I will definitely help you!

Bye Guys!!!