Copy the module into <thelia_root>/local/modules/ directory and be sure that the name of the module is DigressivePrice.
Activate it in your thelia administration panel

Composer

Add it in your main thelia composer.json file

composer require thelia/digressiveprice-module:~1.0

Usage

Once activated, go into the Digressive Prices tab of the product you want to add a digressive price to. You can create a new range, edit or remove an existing one. Fill the form with following information :

Quantity
- from : the quantity which begins your range
- to : the quantity that ends you range.
Discount in %

Then click the "Add" or "Update" button.

Take care of the following :

"quantity to" has to be greater than or equal to "quantity from"
a quantity ('from' and/or 'to') can't be included into another range
a range can't surround another one
a quantity can't be negative

Once created, a table of digressive price is displayed on the product page. This table is updated when the PSE is changed.

The price will be automatically updated according to the product's quantity in the user's cart.

Hook

This module is only hooked into the Modules tab of the products. The Hook used is called "product.tab-content".

On the front-offcie, the module uses the product.details-bottom and product.javascript-initialization hooks.

Loop

[digressive]

Input arguments

Argument	Description
product_id	The ID of the product to get digressive prices. Example: "product_id=3"

Output arguments

Variable	Description
$ID	The digressive price range's ID
$PRODUCT_ID	The product which th current digressive price is linked to
$QUANTITY_FROM	The quantity beginning of the range of the digressive price
$QUANTITY_TO	The quantity ending of the range of the digressive price
$DISCOUNT	The discount %
$PRICE	The tax free price of the product if the quantity is in the range
$PROMO_PRICE	The promo tax free price of the product if the quantity is in the range
$TAXED_PRICE	The taxed price of the product. Uses the tax rules of the user's country
$TAXED_PROMO_PRICE	The taxed promo price of the product. Uses the tax rules of the user's country

Example

This example displays the product prices according to all the quantity's ranges

<table>
    <tr>
        <th>Quantity</th>
        <th>Unit Price (with taxes)</th>
    </tr>

    <tr>
        <td>1</td>
        <td>
            {if $IS_PROMO==1}
                {$BEST_TAXED_PRICE} {currency attr="symbol"} <del>{$TAXED_PRICE} {currency attr="symbol"}</del>
            {else}
                {$TAXED_PRICE} {currency attr="symbol"}
            {/if}
        </td>
    </tr>

    {loop type="product" name="theProduct" id={product attr="id"}}
        {if $IS_PROMO==1}
            {loop type="digressive" name="digressivePrice" product_id=$ID}
                <tr>
                    {if $QUANTITY_FROM != 0 && $QUANTITY_TO == 99999}
                        <td>From {$QUANTITY_FROM}</td>
                    {else}
                        <td>From {$QUANTITY_FROM} to {$QUANTITY_TO}</td>
                    {/if}
                    <td>{$TAXED_PROMO_PRICE} {currency attr="symbol"}</td>
                </tr>
            {/loop}
        {else}
            {loop type="digressive" name="digressivePrice" product_id=$ID}
                <tr>
                    {if $QUANTITY_FROM != 0 && $QUANTITY_TO == 99999}
                        <td>From {$QUANTITY_FROM}</td>
                    {else}
                        <td>From {$QUANTITY_FROM} to {$QUANTITY_TO}</td>
                    {/if}
                    <td>{$TAXED_PRICE} {currency attr="symbol"}</td>
                <tr>
            {/loop}
        {/if}
    {/loop}
</table>