# Discount codes example

This is a very simple example of how you can implement discount codes managed in a separate Excel file on the server.

Try these codes:

TESTPERCENT – percentage discount, 20%
TESTFIXED – fixed discount of \$5

## Source code for this form:

```<label>Subtotal (\$):
\$ [text subtotal "1000"]</label>

<label>Discount code:
[text discount-code]</label>

<label>Second discount code:
[text second-discount-code]</label>

[calculate_button calculate_button-1 "Calculate"]

<div style="display:none">

<!-- Look up the discount code and match it to a number -->

<!-- We need to apply some behind-the-scenes number transformations to see if the discount is a fixed amount or a percentage. If the number is >= 1, then it is a fixed discount, otherwise we assume it is a percentage -->

<!-- First, round down to the nearest integer -->
[calculation temp cf7-hide precision:0 rounddown "raw_discount"]
[calculation temp_2 cf7-hide precision:0 rounddown "raw_discount_2"]

<!-- Then, normalize to either 0 or 1 -->
[calculation is_fixed cf7-hide min:0 max:1 "temp"]
[calculation is_fixed_2 cf7-hide min:0 max:1 "temp_2"]
</div>

<!-- Calculate discount -->
<label>Discount: \$ [calculation discount "raw_discount * is_fixed + (subtotal * raw_discount * (1-is_fixed)) + raw_discount_2 * is_fixed_2 + (subtotal * raw_discount_2 * (1-is_fixed_2))"]</label>

<!-- Calculate total -->
<label>Total: \$ [calculation total "subtotal - discount"]
</label>
```