bumbummen99/shoppingcart discount change from percentage rate to fixed

To change the global tax rate from a percentage to a fixed rate in the bumbummen99/shoppingcart package, you will need to modify how the tax is calculated. By default, the package calculates tax as a percentage of the subtotal. To implement a fixed tax rate, you can override the default behavior.

Here's a step-by-step guide to achieve this:

1. Create a Custom Cart Class: Extend the existing Cart class to override the tax calculation method.

2. Override the Tax Calculation: Implement a method to calculate tax as a fixed amount instead of a percentage.

3. Use the Custom Cart Class: Replace the default cart instance with your custom implementation.

Here's an example of how you might implement this:

use Gloudemans\Shoppingcart\Cart;

class CustomCart extends Cart
{
    protected $fixedTaxRate = 5.00; // Set your fixed tax rate here

    /**
     * Get the tax for the cart.
     *
     * @return float
     */
    public function tax()
    {
        return $this->fixedTaxRate;
    }

    /**
     * Get the total for the cart.
     *
     * @return float
     */
    public function total()
    {
        return $this->subtotal() + $this->tax();
    }
}

// Usage
$cart = new CustomCart();
$cart->add('293ad', 'Product 1', 1, 9.99);
echo 'Subtotal: ' . $cart->subtotal();
echo 'Tax: ' . $cart->tax();
echo 'Total: ' . $cart->total();

Explanation:

• CustomCart Class: This class extends the default Cart class and overrides the tax() method to return a fixed tax rate.
• Fixed Tax Rate: Set the $fixedTaxRate property to the desired fixed amount.
• Total Calculation: The total() method is also overridden to ensure it adds the fixed tax to the subtotal.

By following these steps, you can change the tax calculation from a percentage to a fixed rate in the bumbummen99/shoppingcart package. Make sure to replace the default cart instance with your custom implementation wherever you use the cart in your application.