Vocabulary Catalog

The Vocabulary Catalog is a taxonomy display suite for Drupal 10 and 11. It provides a highly configurable block system to display vocabularies and their terms with real-time entity reference counts, supporting everything from standard Nodes to Media, Commerce Products, and custom entities.

Key Features

• Universal Entity Counting: Go beyond nodes. Count references from Media, Commerce, Users, or any entity type using entity_reference fields.
• Multi-Layout Engine: Switch between Vertical Lists, Responsive Card Grids, Collapsible Accordions, or Horizontal Tabs with a single click.
• Granular Filtering: Filter counts by specific content bundles (e.g., only count "Article" nodes) and hide terms that fall below a minimum count threshold.
• Advanced Tree Logic: Support for deep nesting with configurable max-depth limits, weight-based sorting, and alphabetical or count-based ordering.
• Interactive Toolset: Integrated AJAX live search for instant client-side filtering and one-click CSV exporting for data analysis.
• Developer Friendly: Full REST API support, comprehensive Twig theme suggestions, and CSS Custom Properties (Variables) for easy styling.

Installation

Install the module via Composer to automatically manage dependencies and library definitions:

composer require drupal/vocabulary_catalog

Enable the module using Drush:

drush en vocabulary_catalog -y

Configuration & Usage

1. Placement: Navigate to Structure » Block Layout and place the "Vocabulary Catalog" block in your desired region.
2. Selection: Choose the vocabularies you wish to display. The block supports multiple vocabularies simultaneously.
3. Entity Settings: Under the Entity Counting tab, select the entity types you want to track. If selecting "Node," you can further refine the count by Content Type.
4. Permissions: Manage access at People » Permissions:
   • Administer vocabulary catalog: Configure block settings.
   • Export vocabulary catalog: Download CSV data.
   • View unpublished vocabulary catalog terms: Visibility of status = 0 terms.

Architecture & Performance

The module is engineered for high-performance enterprise environments where taxonomy trees can scale to thousands of terms:

• Smart Cache Invalidation: Uses a sophisticated cache tag system (vocabulary_catalog_counts and taxonomy_term_list:[VID]) to ensure data is only recalculated when terms or referenced entities change.
• Optimized Queries: Utilizes the taxonomy_index for high-speed node counting, falling back to optimized Entity Queries for non-core entity types like Media or Commerce.
• Decoupled Ready: The REST API endpoint allows you to pull the entire catalog structure into headless applications (React/Next.js) with clean, markup-free JSON.

Theming & Customization

The module provides granular template suggestions and CSS variables for seamless integration:

• Twig Templates: Override the base layout using vocabulary-catalog-block--[block-id].html.twig.
• CSS Variables: Customize the visual identity without writing complex overrides:
  

  :root {
    --vc-color-primary: #007bff;
    --vc-color-badge-bg: #e9ecef;
    --vc-radius: 8px;
  }

REST API Endpoint

Access the catalog data programmatically via the following route:

GET /api/vocabulary-catalog/{block_id}?vocabularies=tags,categories

The API supports filtering by min_count, max_depth, and sort_by parameters, returning a structured JSON tree of terms and metadata.

Similar Projects

• Facets: Ideal for search-driven filtering, whereas Vocabulary Catalog is designed for dedicated navigation and landing pages.
• Taxonomy Menu: Converts vocabularies into Drupal Menu items; our module offers deeper entity-counting logic and modern AJAX filtering.
• Term Condition: Provides visibility controls, while Vocabulary Catalog focuses on visual presentation.

Support & Contribution

If you encounter bugs, need assistance with complex entity reference setups, or have ideas for new layouts—such as a "Masonry" grid or "Tag Cloud" view—please contribute to the official issue queue.