Custom Sized Products

Last modified by Mark_Kimsal on Tue, December 18, 2007 09:15
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Purposed: Sell more products than you have room for in the database by taking customer input and attaching it to the customer’s order.

Skill level: Intermediate to Advanced developer.

Target Audience: Any organization that creates “Made-to-Order” products.

This article will detail an approach to taking custom sized orders from customers and attaching the specific information to an order invoice.

The steps involved are:

  • Create a product attribute in an attribute_set for your products that need a custom size. We will call this attribute “custom_size’ for the remainder of this article.
  • Alter the product info page to show specific form controls to the user for entering their size information.
  • Alter the cart procedure to attach the customer’s information to the product
  • Alter the order processing procedure to pass the product information into the order (sales_quote_item in Magento speak)

Product Attributes

You will need to create a product attribute called “custom_size” and attach this to any attribute set required for each product that can accept a custom size. This attribute will not be shown to the front end. It will act as a container and pass messages through-out the Magento system.

User Input

Altering the product info page to include specific size form controls is different for each organization’s needs. For this article we will create 2 input fields, one to ask for width information as whole inches, and one to get fractional width information down to the 1/8th of an inch.

Cart Procedure

As the first step, we will hard code in a valid of 23 & 1/8” into the custom field for testing purposes.

in app/code/core/Mage/Checkout/controllers/CartController.php around line: 89

$product→setData(’custom_size’, ‘32 1/8”‘);

Add the above line just above the line:

$cart→addProduct($product, $qty);

Alter the Sales Quote

Now we have to modify the definition of the Sales Quote in order for it to read and store this new, non-standard information from a product. Normally, in Magento, all unique characteristics are described by one SKU and one Product ID. Having a 1-to-1 mapping of features to unique SKU is necessary, we are trying to target the organizations that have too many products to turn into unique products in the database.


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