Subcategory products in parent category OpenCart

The module adds a simple but important feature to the OpenCart category display: the parent category now displays products not only from the category itself, but also from all its subcategories. This solves the common problem of a customer visiting a section and seeing "empty" products, even though the products are located deeper in the tree.

Key Features

• Enables a filter for displaying products from subcategories on the category page.
• Works automatically for the standard controller catalog/controller/product/category.php.
• It doesn't add any settings to the admin panel—the effect is visible immediately after installation.

Benefits for the store

• Fewer “empty” categories the visitor immediately sees the product range, even if it is divided into subcategories.
• Easier navigation you don't have to fall down 2-3 levels every time to find products.
• More product views the section showcase becomes richer without manual catalog re-layout.
• Minimal changes the modification adds only one filter parameter and does not affect templates.

Example:

We have categories Samsung => Televisions => Plasma TVs

When creating a product, specifying the Plasma TVs category in the links tab, the product will appear in all three categories, and not just the one we selected.