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SearchPress

Elasticsearch integration for WordPress.

Release Information

Each stable release gets tagged and you can download releases from GitHub. master points to the latest stable release at any given time.

Pre-Release Versions

Pre-release development happens against release/<version> branches. Once a release is ready-to-ship, it is merged into master and tagged.

Backwards Compatibility & Breaking Changes

We try to maintain backwards compatibility as much as possible. It's possible that releases will need to contain breaking changes from time to time, especially as Elasticsearch itself is a constantly changing product. Breaking changes will be detailed in release notes.

SearchPress has a thorough battery of unit and integration tests to help add compatibility with each new Elasticsearch release, without compromising compatibility with older releases.

Prerequisites

• Elasticsearch: 6.8+
• PHP: 7.4+
• WordPress: 5.9+

Setup

1. Upload to the /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress
3. You'll be prompted to add your Elasticsearch endpoint and to index your posts
   • SearchPress provides a WP-CLI command for faster indexing on large sites
4. Once indexing is complete, you're good to go!

Indexing Post Meta

In early versions of SearchPress, SearchPress would index almost all post meta with the post. Starting in the 0.4 release, SearchPress only indexes the post meta that it is explicitly told to index. Further, it only indexes post meta in the data types that a site's developer plans to use. The principal reason behind this change is performance, and to prevent "mappings explosion".

Data type casting will only be attempted for a key if the opt-in callback specifies that type for the key in question (see example below for the full list of possible types). However, the data type will still only be indexed if the type casting is successful. For example, attempting to index the meta value "WordPress" as a long would fail, since it is not a numeric value. This failure is silent, for better or worse, but type casting is overall quite forgiving.

If a meta key is allowed to be indexed, the meta value will always be indexed as an unanalyzed string (post_meta.*.raw) and that type need not be specified. This is primarily for compatibility with ES_WP_Query, which depends on that key in EXISTS queries, among others.

How to index post meta

Changelog

0.5.1

• Adds sp_api_request_url filter to filter the API url.
• Fixes indexing error when using SP_DEBUG
• Fixes possible fatal where 'sp' is set as a query_var but is not an array
• Fixes CLI display of page size when page size is greater than 999

0.5

• POSSIBLE BREAKING CHANGE: Moves SearchPress integration to the posts_pre_query.
• Adds UI for authentication
• Trims trailing slashes from ES host value
• Adds the sp_search_uri filter
• Addresses phpcs issues
• Disables flush via UI
• Adjusts empty-string search integrations
• Filters the log message for the error
• Adds support for pasing an array of terms in SP_WP_Search
• Cleans up inline documentation
• Adds the sp_request_response action hook to the SP_API class

0.4.3

• Manually check for queried taxonomy terms when building facets
• Adds support for Github Actions
  • Tests action for PHPCS
  • Tests action for unit tests
• Removes double underscore for single to fix PHP warning
• Updates phpunit
• Adds support for ES 8.x
• Adds support for PHP 8.1, 8.2

0.4.2

• CLI improvements
  • Improves PHPDoc
  • Adds more CLI command examples
  • Adds more standards from https://make.wordpress.org/cli/handbook/guides/commands-cookbook/
  • Uses WP_CLI::log instead of WP_CLI::line
  • The debug command checks for the existence of a valid post and adds a warning for SP_DEBUG and SAVEQUERIES
  • Uses WP_CLI\Utils\get_flag_value to get flag values
  • Uses quote instead of double quotes
  • Adds support for --post-types argument

0.4.1

• Updates grunt packages to latest versions
• Documents deprecated/removed filters in 0.4.0
• Improves handling of indexing batch with no indexable posts
• Adds filter sp_post_index_path for single post paths
• Adds filter sp_bulk_index_path for bulk index paths

0.4

• CRITICAL BREAKING CHANGE: Post meta indexing is now opt-in. See README for more information.
• POTENTIAL BREAKING CHANGE: Removes sp_post_indexable_meta filter
• Removes sp_post_ignored_postmeta filter
• Adds support for ES 5.x, 6.x, 7.x
• Fixes indexing bug with parentless attachments
• Fixes a bug with bulk syncing attachments
• Improves flexibility for custom indexing of posts
• Improves facet lists to exclude current selections
• Adds option in the admin to index content without flushing
• Fixes bug with cached list of post types to sync
• Fixes conflicts with Advanced Post Cache and CLI-based cron runners
• Adds completion suggester API for search-as-you-type functionality
• Fixes bug with SSL cert verification
• Overhaul of phpunit testing environment for performance
• General coding standards cleanup

0.3

• Adds heartbeat to monitor Elasticsearch
• Improves capabilities handling for admin settings
• Adds a status tab to admin page
• Improves test coverage for heartbeat and admin settings
• Fixes bug with post type facet field
• Allows multiple post IDs to be passed to cli index command
• Locally cache API host to improve external referencing to it
• Fixes edge case bugs with indexing, e.g. with long meta strings
• Improves indexed/searched post types and statuses handling
• Tests across a wider range of ES versions using CI
• Stores/checks mapping version
• General code improvements

0.2

• Adds unit testing
• Significant updates to mapping (breaking change)
• Enforce data types when indexing
• Adds helper functions
• Adds support for ES 1.0+ (breaking change)
• Refactors search (breaking change)
• Removes SP_Config::unserialize_meta()
• Adds Heartbeat to automatically disable the integration if ES goes away
• Update to latest WP Coding Standards
• Assorted bug fixes

0.1

• First release!