Knowledge base contains information on how to use Relevanssi. There are lots of features that are documented in the knowledge base. Here's an index to the knowledge base, with all the entries sorted under different topics.
The user manual functions page is also a good place to look at.
Sometimes Relevanssi can get stuck in the indexing. Relevanssi goes past the number of posts in the database and keeps indexing the posts. One possible cause is a too small max_allowed_packet value for your MySQL server. This value controls how big queries your MySQL server can take. You can see the current value with one…
The wpDataTables table plugin has several ways to handle tables. Some of them work with Relevanssi without problems; some don’t. You may notice that Relevanssi doesn’t index the entire table contents for wpDataTables tables (mainly imported tables). This is because the wpDataTables shortcode does not always expand to the entire table; it only features part…
Polylang Pro has a feature to sync translations between posts. The problem with this and Relevanssi is that Relevanssi does not index the changes to the synced posts. With this filter function added to your site, Relevanssi will also index the synced posts: Thanks to Nico von Niederhäusern / Cubetech. There’s also a method for…
The Photo Gallery plugin from 10Web uses a shortcode to add photo galleries to posts and pages. By default, Relevanssi doesn’t index the gallery contents. Photo Galler only registers the shortcode in the front end, so when Relevanssi indexes pages in the admin context, Relevanssi only sees the shortcode, not the gallery contents. To fix…
If you want to add an option to search only in titles to your search form, here’s how. First, you need to modify the search form to add the selection. To add a simple dropdown, add this to your search form: This select element will create a small dropdown with the option to search everything…
The Premium version of YITH Badge Management has a search feature for badges. Using Relevanssi breaks that badge search. Fortunately, it’s easy to fix. Add this to your site: Now Relevanssi won’t interfere with the YITH Badge Management search.
It’s possible to integrate all kinds of external data to Relevanssi weights. Koko Analytics is a great analytics plugin. It collects stats about your visitors and stores them in the local database, which means those stats are available for Relevanssi. For some sites, this makes a lot of sense. For example, I have Kirjavinkit, a…
By default, Relevanssi returns all posts when searching without a search term. That’s the default WordPress behaviour. Sometimes it may not be the wanted behaviour. One reason is performance: returning all results can be very slow. To stop Relevanssi from running when there’s no search term, add this to your site: This little function will…
By default, the search ignores German umlauts. Searching for “uber” will also find “über” and so on. This ignorance is not a Relevanssi feature but instead governed by your database. The default database collation WordPress uses (utf8mb4_unicode_ci) ignores all accents, including umlauts. If you want the search to care about umlauts, you can change the…
A Relevanssi user asked about Italian plurals on the Relevanssi support forums. The best answer is to use the Relevanssi Snowball Stemmer; it supports Italian and can handle more than plurals. You can add a function to handle just the plurals, though. Add this to your site: This function checks each word, and if it…