Magento – Dynamic price calculation for product

price

I'm completely new to magento and i've read some threads in this forum but i'm not quite sure whether my solution is correct.

I have a product which can change its price depending on the customers choice. for example customer can choose how many square meters of the product he wants to buy. Depending on that choice the price has to be recalculated and should be displayed immediately.

This is done via ajax call to my customized controller which overrides the "Mage_Core_Controller_Front_Action"

Second, i have registered an observer for the "catalog_product_get_final_price" event. This observer overrides the final price in the product with my own calculated final price.

My questions now are:

Is this the best possible solution for this problem?
Are there any problems with this solution? Did i miss something very important?
What do i have to test?

Best Answer

I think there is a far better possibility to implement this:

You implement everything client side with "a few lines of JavaScript" (you know what I mean) to calculate the price,based on the square meter.

The square meter is implemented as custom option.

And server side, you hook into some event, I would try checkout_cart_product_add_after to set the price on the quote item. This way you don't have any rewrites, which is highly recommended and you don't need any AJAX-Request to get the price.

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Magento – Product price matrix

In terms of that particular developer, their service level has improved a lot over the last couple of years.

If you don't need to track inventory, then you could just use custom options which would be a great deal more simple.

You could also consider using better configurable products (http://www.nr-apps.com/store/bcp-better-configurable-products.html) which simplifies the method of structuring your prices.

It would be good to know more about your specific requirements though; how many products are you talking about, how many options would you have for each attribute, etc.

Magento – Magento event to calculate price when custom option text field changes

I used for this usecase sales_quote_collect_totals_before:

/**
 * Set prices
 *
 * @param Varien_Event_Observer $observer
 */
public function salesQuoteCollectTotalsBefore(Varien_Event_Observer $observer)
{
    /* @var $quote Mage_Sales_Model_Quote */
    $quote = $observer->getQuote();
    foreach ($quote->getAllItems() as $quoteItem) {
        if (is your product of choice) {
            /* @var $quoteItem Mage_Sales_Model_Quote_Item */
            $product = $quoteItem->getProduct();
            $price = whatever formula you want to use;
            $product->setPrice($price);
        }
    }
}

On the client side, you can just use a few lines of JS to update the price?

Best Answer

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Magento – Product price matrix

Magento – Magento event to calculate price when custom option text field changes

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