Unified Search 0.3.0

One search across several WordPress sites, backed by a shared Solr 9 collection. Install it on each site with the same Solr settings and a different site key: every site indexes its own pages and searches all of them.

Install

1. Download unified-search.zip below (not "Source code", which installs under the wrong folder name).
2. In WordPress: Plugins → Add New → Upload Plugin → choose the zip → Activate.
3. Create a Solr collection from the bundled configset (solr/README.md), then fill in Unified Search → Settings and click Test connection.
4. Unified Search → Index → Re-index everything.

Later versions show up as normal plugin updates.

Requirements

• WordPress 6.0+, PHP 8.1+
• A Solr 9 server you run or rent. The plugin does not search the WordPress database, so it does nothing without Solr.

What's in it

• Search results page via [unified_search], or replacing the normal WordPress search: "this site / all sites" switch, site and type filters, highlighted excerpts, paging
• Indexing of the rendered page, so content from page builders and custom fields is searchable too; optional updates on publish
• A synonym list shared by every site, plus per-site keywords that put specific pages first
• Header search icon, a /search/ page, and a [unified_search_box] shortcode
• A ready-made Solr configset; the field type and synonym list names are configurable
• WP-CLI: wp unified-search status | preview | push | clear
• Hooks for add-ons to index content that isn't a post

GPL-2.0-or-later.