Xon - Search Improvements 2.16.1

A collection of improvements to XF's Enhanced Search and some for XenForo's default MySQL search.

MySQL & Elastic Search features;

• range_query search DSL

  • allows arbitrary range queries for numerical data

• Allow users to select the default search order independent for the forum wide setting.

  • Re-adds the global option for the default search type

Elastic Search Only features:

• Add ability to push "can view threads/tickets by other" permission(s) into ElasticSearch query, reducing php-side culling of matching content.
  This improves searching forums/tickets where the user lacks these permissions.
  This is gated behind the option Push "View X by others" check into XFES', as it requires a full reindex. (Default disabled)
  Supports the following add-ons:

  • View Sticky Threads (free) add-on.

  • Collaborative Threads (paid) add-on.

  • @NixFifty's Tickets (paid) add-on.

  For best results, use ElasticSearch Essentials add-on, as it simplifies this permission constraint compared to stock XenForo

• Per content type weighting

• Adds Elastic Search information to the AdminCP home screen.

• Adds a debug option to log the search DSL queries to error log for troubleshooting

• Option to extend search syntax to permit;

  • + signifies AND operation

  • | signifies OR operation

  • - negates a single token

  • " wraps a number of tokens to signify a phrase for searching

  • * at the end of a term signifies a prefix query

  • ( and ) signify precedence

  • ~N after a word signifies edit distance (fuzziness)

  • ~N after a phrase signifies slop amount

  • In order to search for any of these special characters, they will need to be escaped with \.

• "Specialized index" support

  • Specialized search index allows generating single-purpose elastic search indexes while re-using as much XF search infrastructure as possible.

  • Username auto-complete powered by elasticsearch
    These are examples of a "specialized index".
    The username autocomplete it creates an index with just the user/email and replaces the admin quick search and front-end username autocomplete with an elasticsearch powered version.
    The tag autocomplete replaces the front-end tag autocomplete with an elasticsearch powered version.
    In both cases this allows non-start-of-string matching, with typo tolerance.