README

Overview

The SkiDev_OrderItemAttributes Magento 2 module allows you to specify certain product attributes that should be transferred to the sales_order_item table when a quote is converted into an order. This enables the storage of selected product attribute values along with each order item for future reference.

Features

• Adds a new option to the EAV attribute model that determines whether the attribute value should be transferred to the order item.
• Transfers specified product attributes from the quote item to the order item in JSON format.
• Supports various product attribute types such as:
  • Text attributes
  • Dropdown attributes (stores label values)
  • Multiselect attributes (stores selected option labels)

Installation

• 1. Clone or download this repository and place it in the app/code/SkiDev/OrderItemAttributes directory of your Magento 2 installation.

• 2. Run the following commands to enable the module and set up the database schema:

bin/magento module:enable SkiDev_OrderItemAttributes
bin/magento setup:upgrade
bin/magento cache:flush

Schema Changes

This module introduces two new database columns:

• 1. transfer_to_order_item in the catalog_eav_attribute table:
  • Type: SMALLINT
  • Description: Determines whether this attribute should be transferred to the order item.
• 2. product_attributes in the sales_order_item table:
  • Type: TEXT
  • Description: Stores the product attributes (in JSON format) transferred from the quote item.

Functionality

Adding Transfer-to-Order Option to Attributes

In the Magento admin panel, a new option is added to the attribute creation/edit form to mark an attribute for transfer to the order item:

• When an attribute is edited in the admin, you will see a field labeled Transfer to Order Item. Selecting "Yes" will ensure that the attribute's value is transferred when the quote is converted to an order.

Observer: Save Product Attributes to Order Item

The module uses an observer that listens to the sales_convert_quote_item_to_order_item event. During the conversion from quote to order, this observer:

• 1. Iterates through all quote items.
• 2. For each quote item:
  • Retrieves the associated product and its attributes.
  • If an attribute has the transfer_to_order_item flag set to 1, its value is processed.
  • Depending on the attribute type:
    • Text, Textarea, Date attributes: The value is saved directly.
    • Dropdown attributes: The label of the selected option is saved.
    • Multiselect attributes: The labels of the selected options are saved as an array.
• 3. All relevant attributes are encoded into a JSON string and stored in the product_attributes field in the sales_order_item table.

Example JSON Data Stored in Order Item

The product_attributes field stores data in JSON format. For example:

{
  "color": "Red",
  "size": "Large",
  "custom_options": ["Option 1", "Option 2"]
}

Author

Author Name: Karol Puczkowski
Email: karol.skidev@gmail.com
github: github.com/KarolPuczkowski
You can reach out for any questions or contributions to the module.