Continue reading Using multiple custom taxonomies

Using multiple custom taxonomies

Usually WordPress supports one category, one tag and one taxonomy in the search, if you use the query variables to set the taxonomies. You can enter multiple taxonomies as parameters to the query, but only the first one is used. If you want to have multiple taxonomies involved, you need to build a tax_query. The…

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Continue reading Using Relevanssi without a search term

Using Relevanssi without a search term

Version 1.7.3 introduces the possibility to use Relevanssi without a search term. This is useful when you have extra query arguments that can be used to narrow the search, but which would be useful without a search term present. This was originally implented for a restaurant search, where the users can search for restaurants based…

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Continue reading Taxonomy archive search

Taxonomy archive search

This is a Premium feature and only applies when you index taxonomy terms. This does not apply in free Relevanssi. To include taxonomy pages (categories, tags, custom taxonomies) in the search, enable the option in the options page. There’s also the option to choose which taxonomies are included. By default empty terms (not linked to…

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Continue reading Custom weighing with relevanssi_match and relevanssi_results

Custom weighing with relevanssi_match and relevanssi_results

The relevanssi_match hook lets you modify the matches found for queries. It passes a match object, which has the post id ($match->doc), number of hits found in different parts of the post and the weight assigned to the post ($match->weight). Here’s how the weight is calculated: Where $idf is the inverse document frequency, aka the…

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Continue reading Multisite searches

Multisite searches

Multisite search only works in Relevanssi Premium. Free Relevanssi can be installed in multisite environments, but it cannot search across sites. Relevanssi Premium can only support multisite searching across sites in the same multisite network. Relevanssi can’t search across multiple sites that are not in the same multisite installation. Cloud-based search tools can help you…

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Continue reading Direct access to the query engine

Direct access to the query engine

Relevanssi can’t be used in any situation, because it checks the presence of search with the is_search() function. This causes some unfortunate limitations and reduces the general usability of the plugin. You can, however, access the query engine directly. There’s a function called relevanssi_do_query(), which can be used to do search queries just about anywhere. Here’s a…

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Continue reading Using the relevanssi_where hook

Using the relevanssi_where hook

If you want to add extra filters to the search results, you can add them using a hook. Relevanssi searches for results in the _relevanssi table, where terms and post_ids are listed. The various filtering methods work by listing either allowed or forbidden post ids in the query WHERE clause. Using the relevanssi_where hook you can…

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