Magento dynamic product price

Question

Does anyone know how to make a product with not fixed price?

By default the product price is $1. But it can be changed by user dragging a price product slider (the product is a donation product).

So how to implement that? How to give an ability for the user to change the product price?

I was thinking about the configurable product with attribute set but I'm not sure that it's really elegant way to do so.

Thank you in advance!

Answer 1

The easiest way I can think of is to create a product in magento to use as a template.

Then create a observer

<events>
    <sales_quote_add_item>
        <observers>
            <priceupdate_observer>
                <type>singleton</type>
                <class>mymodule/observer</class>
                <method>updatePrice</method>
            </priceupdate_observer>
        </observers>
    </sales_quote_add_item>
</events>

Then in your observer method you does something like this:

public function updatePrice($observer) {
    $event = $observer->getEvent();
    $quote_item = $event->getQuoteItem();
    $new_price = <insert logic to check if this is the custom product and to get value from ajax>
    $quote_item->setOriginalCustomPrice($new_price);
    $quote_item->save();
}

(note that a user could always fake the post and change the item price)

See Customize Magento using Event/Observer

Answer 2

I would use a custom option for that, with 100(?) options, each in 1$ steps (or maybe higher steps later).

Than you can implement a slider, write some JS to change the select box for the custom option, hide it and finished.