The FacetWP Alphabet Add-On (officially known as the A-Z Listing facet type) is a professional extension for the FacetWP plugin. It allows users to filter content based on the first letter of a title or a specific data field, making it an essential tool for directories, member lists, and extensive product catalogs.
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Facet Type: Adds a new “A-Z Listing” type to the FacetWP settings.
Data Sources: Works with post titles, custom fields (ACF, Meta Box), or taxonomies.
Filtering Method: AJAX-powered (instant updates without page reloads).
Requirement: Requires the core FacetWP plugin to be installed and active.
Compatibility: Works with WordPress 5.0+ and is fully responsive across mobile, tablet, and desktop.
Automatic Letter Detection: The add-on scans your selected data source and automatically displays only the letters that have corresponding content (dimming or hiding “ghost” choices).
Accent & Case Sensitivity: By default, it uses WordPress’s remove_accents() function. This means letters like ñ, N, and n are all treated as “N,” ensuring a clean, unified index.
Numeric Support (#): Includes an optional “hash” character that groups all content starting with numbers (0-9).
Reset Option: Includes an “Any” or “All” link to clear the alphabetical filter quickly.
SEO Friendly: Generates clean, crawlable URLs for better search engine indexing of your filtered lists.
For developers, the add-on is highly extendable through PHP hooks:
| Hook | Purpose |
facetwp_alpha_chars |
Modify the available characters (e.g., adding Emojis, Cyrillic, or Greek alphabets). |
facetwp_alpha_remove_accents |
Disable or modify how accented characters are simplified. |
facetwp_i18n |
Translate the “Any” label or other UI text. |
