opengento/module-minimal-price

This extension allows to set if a product is minimalPrice and can show its price by scope and customer group.

1.0.3 2024-11-20 16:27 UTC

Requires

• php: ^8.1
• magento/framework: *
• magento/module-catalog: *
• magento/module-catalog-rule: *
• magento/module-eav: *

Requires (Dev)

• magento/magento-coding-standard: ^33
• roave/security-advisories: dev-latest

MIT

• Opengento Team
• Thomas Klein

• php
• pricing
• price
• map
• magento
• magento2
• minimum advertised price
• minimal advertised price

README

This extension allows to set a minimal price to a product (MAP).

• Setup
  • Composer installation
  • Setup the module
• Features
• Did You Know
• Support
• Authors
• License

Setup

Magento 2 Open Source or Commerce edition is required.

Composer installation

Run the following composer command:

composer require opengento/module-minimal-price

Setup the module

Run the following magento command:

bin/magento setup:upgrade

If you are in production mode, do not forget to recompile and redeploy the static resources.

Features

Define the minimal price availability for a product. The price is capped to the minimal value if any special price, tier price or catalog rule tries to price down the limit.

Product Attributes

• minimal_price, available in the "Advanced Pricing" group.

If you use the native import export tool provided with Magento, the attribute minimal_price is mapped with the field map_price.

Did You Know

An hiding an never completed feature

While working on this project, it appears that Magento already has an attribute with code "minimal_price".
This attribute exists in Magento since forever. It's actually a system attribute which is not visible through the admin panel.
There is also a few method that refers to this attribute, such as:

• \Magento\Catalog\Model\Product::getMinimalPrice (Called in \Magento\Catalog\Pricing\Price\FinalPrice::getMinimalPrice)
• \Magento\Catalog\Model\ResourceModel\Product\Collection::joinMinimalPrice (Never called)

This attribute and methods are not used in the Commerce edition neither.
There is also some trace there: \Magento\CatalogImportExport\Model\Export\Product:

...
'minimal_price' => 'map_price',
'msrp' => 'msrp_price',
'msrp_enabled' => 'map_enabled',
...

This suggests that minimal_price is mapped as "Minimum Advertised Price" (MAP). MAP policies are legal documents brands use to define the lowest legally possible advertised price for a product. It does set the minimum, some penalties may be applied if a seller violates the MAP.

This module updates and reuse this existing attribute in order to give it a true usage.

Price Indexer, to be or not to be?

Also, while investigating a bug where the minimal price value was not handled in the PDP nor PLP. It seems that the catalog_product_index_price is not used to render and display the final prices.
When inspecting the query logs, it seems that even if the indexer is loaded and applied to the product list, when the template render the prices, the following method is used \Magento\Catalog\Block\Product\ListProduct::getProductPrice. This method calls Magento\Framework\Pricing\Render::render which render a price by code. The engine will proceed with Magento\Catalog\Pricing\Price\FinalPrice and Magento\Catalog\Pricing\Price\BasePrice. The rendering is finally delegated to Magento\CatalogRule\Pricing\Price\CatalogRulePrice which loads any active catalog rules.

The performance struggles comes when you have a lot of active catalog rule loaded every team for each items on the page.

Support

Raise a new request to the issue tracker.

Authors

• Opengento Community - Lead -
• Thomas Klein - Maintainer -
• Contributors - Contributor -

License

This project is licensed under the MIT License - see the LICENSE details.

That's all folks!