Welcome back to the Laravel E-Commerce Project Tutorial. In this video, we will learn about removing a coupon from the cart.

Step 1: Create a Method in the CartController

First, let's create a method in the CartController for removing the coupon from the cart:

public function remove_coupon_code()
{
    session()->forget('coupon');
    session()->forget('discounts');
    return back()->with('status','Coupon has been removed!');
}

Step 2: Create a Route for the Function

Next, go to the web.php file and create a route for the function:

Route::delete('/cart/remove-coupon',[CartController::class,'remove_coupon_code'])->name('cart.coupon.remove');

Step 3: Add a Remove Coupon Link

Now, go to the cart.blade.php file and add a remove coupon link inside the cart-footer:

<div class=`cart-table-footer`>
    @if(!Session::has(`coupon`))                       
        <form class=`position-relative bg-body` method=`POST` action=`{{route('cart.coupon.apply')}}`>
            @csrf                        
            <input class=`form-control` type=`text` name=`coupon_code` placeholder=`Coupon Code`>
            <input class=`btn-link fw-medium position-absolute top-0 end-0 h-100 px-4` type=`submit` value=`APPLY COUPON`>                                                        
        </form>
    @else
        <form class=`position-relative bg-body` method=`POST` action=`{{route('cart.coupon.remove')}}`>
            @csrf     
            @method('DELETE')                   
            <input class=`form-control text-success fw-bold` type=`text` name=`coupon_code` placeholder=`Coupon Code` value=`{{session()->get('coupon')['code']}} Applied!` readonly>
            <input class=`btn-link fw-medium position-absolute top-0 end-0 h-100 px-4 text-danger` type=`submit` value=`REMOVE COUPON`>                            
        </form> 
    @endif
    <form class=`position-relative bg-body` method=`POST` action=`{{route('cart.empty')}}`>
        @csrf
        @method('DELETE')
        <button class=`btn btn-light` type=`submit`>CLEAR CART</button>
    </form>
</div>

Now it's done! Let's check it out. Add some products to the cart, apply the coupon code `OFF10`, and you will see that the coupon has been applied. The cart total will be updated accordingly.

Now, let's remove the coupon. Click on the `Remove Coupon` link, and you will see that the coupon has been removed. The cart total will be updated again to reflect the removal of the coupon.

In this way, you can remove a coupon from the cart.

That's all about removing a coupon from the cart.