MRZ Product Filter Exp

MRZ Product Filter is a minimalist product filter for WooCommerce. It builds a filter panel from your product categories, attributes and tags, plus a price slider, and lets shoppers narrow down the shop or category archives with instant AJAX updates. A chosen "color" attribute is rendered as color swatches. Each filter set is configured from a dedicated Custom Post Type and can be displayed automatically on the shop / archives, or placed manually with a shortcode. The markup is intentionally minimal (wireframe, black & white) so you can style it to match your theme. Features

• Filter by product categories, tags, brands and product attributes (checkboxes, radio buttons or dropdowns).
• Price range slider (min / max).
• Color swatches for a chosen attribute — the color is stored on each attribute term and reusable.
• AJAX refresh of the product loop, with native URL parameters (shareable, SEO-friendly) and a no-JavaScript fallback that filters through WooCommerce natively.
• Collapsible sections (native <details>), with a per-section and global "expanded by default" setting.
• Automatic display on the shop and category / tag archives (left column or above the products), or manual placement with [mrzpfe_product_filter id="X"].
• Multiple filter sets via a dedicated Custom Post Type — a different configuration per context.
• Translation-ready (text-domain mrz-product-filter-exp, .pot file provided).

Requirements

• WordPress 6.3 or later, PHP 7.4 or later.
• WooCommerce.

Privacy / external calls MRZ Product Filter makes no external HTTP calls, loads no remote resources, and collects no telemetry. Everything runs locally on your site. Source code and contributions Development happens publicly on GitHub: https://github.com/m0r3z/mrz-product-filter-exp

1.5.2

• Code quality: cleaned up the Plugin Check findings (coding-standard annotations, prefixed variables in the uninstall routine). No functional change.

1.5.1

• Declared compatibility with WooCommerce High-Performance Order Storage (HPOS). The plugin does not read or write orders.
• Added the WC requires at least and WC tested up to headers.
• Tested up to WordPress 7.1.

1.5.0

• Declared WooCommerce as a required plugin (Requires Plugins header, WordPress 6.5+).
• All source strings (admin, front end and plugin description) are now in English, as expected by translate.wordpress.org. French is provided as a fr_FR translation.
• The French (fr_FR) translation now ships with the plugin and is loaded from its languages/ folder, so French sites stay in French. A translate.wordpress.org language pack, when available, takes precedence.
• Admin JavaScript messages (color attribute terms loading) are now translatable.

1.4.1

• Maintenance: build/CI update only (deploy workflow). No functional change to the plugin.

1.4.0

• All internal code identifiers now use the mrzpfe / MRZPFE / Mrzpfe prefix (4+ characters) per the WordPress.org guidelines: functions, classes, namespace, constants, options/transients, shortcode ([mrzpfe_product_filter]), AJAX action and the custom post type (now mrzpfe_filter). Note: an existing filter set created with a previous version must be recreated.

1.3.1

• Renamed the plugin to "MRZ Product Filter Exp" so the WordPress.org slug matches the text domain (mrz-product-filter-exp). Set the Contributors line to the owning wordpress.org account. Cosmetic / metadata only.

1.3.0

• New: contextual filters — on a category / brand / tag / attribute archive, every filter (categories, brands, materials, attributes…) only lists the terms actually present among that context's products, with the real per-context counts. Avoids offering a choice that would return no products.

1.2.0

• New: WooCommerce brands (the native product_brand taxonomy) can be added as a filter source, like categories and tags. Shown only when the taxonomy exists.
• New: optional "sticky" left column — the filter panel follows the scroll, with a configurable top offset (desktop / tablet).

1.1.1

• Fix: the "products per page" override is now forced via pre_get_posts, so it applies even when the theme sets its own products-per-page (e.g. Salient).
• New: extra "large screen" column level (≥ 1600px) in the responsive columns option.

1.1.0

• New: option to control the number of products per page and the number of columns per row, with responsive breakpoints (desktop / tablet / mobile). Applies on the shop and archives targeted by the filter set.

1.0.0

• First release.
• Filter by categories, tags, attributes and price, with color swatches for a chosen attribute.
• AJAX product loop refresh with native URL parameters and a no-JS fallback.
• Automatic display (left column / above products) or shortcode placement, configured from a Custom Post Type.