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Relevanssi – A Better Search

Por Mikko Saari

Descripción

Relevanssi replaces the standard WordPress search with a better search engine, with lots of features and configurable options. You’ll get better results, better presentation of results – your users will thank you.

This is the free version of Relevanssi. There’s also Relevanssi Premium, which has added features. For more information about Premium, see Relevanssi.com.

Do note that using Relevanssi may require large amounts (hundreds of megabytes) of database space. If your hosting setup has a limited amount of space for database tables, using Relevanssi may cause problems. In those cases use of Relevanssi cannot be recommended.

Key features

  • Search results sorted in the order of relevance, not by date.
  • Fuzzy matching: match partial words, if complete words don’t match.
  • Find documents matching either just one search term (OR query) or require all words to appear (AND query).
  • Search for phrases with quotes, for example “search phrase”.
  • Create custom excerpts that show where the hit was made, with the search terms highlighted.
  • Highlight search terms in the documents when user clicks through search results.
  • Search comments, tags, categories and custom fields.
  • Multisite friendly.
  • bbPress support.

Advanced features

  • Adjust the weighting for titles, tags and comments.
  • Log queries, show most popular queries and recent queries with no hits.
  • Restrict searches to categories and tags using a hidden variable or plugin settings.
  • Index custom post types and custom taxonomies.
  • Index the contents of shortcodes.
  • Google-style “Did you mean?” suggestions based on successful user searches.
  • Support for WPML multi-language plugin and Polylang.
  • Support for s2member membership plugin, Members, Groups and Simple Membership.
  • Advanced filtering to help hacking the search results the way you want.
  • Search result throttling to improve performance on large databases.
  • Disable indexing of post content and post titles with a simple filter hook.

Premium features (only in Relevanssi Premium)

  • Indexing attachment content (PDF, Office, Open Office).
  • Improved spelling correction in “Did you mean?” suggestions.
  • Searching across multiple sites in the same multisite installation.
  • Search and index user profiles.
  • Search and index taxonomy term pages (categories, tags, custom taxonomies).
  • Search and index arbitrary columns in wp_posts MySQL table.
  • Assign weights to any post types and taxonomies.
  • Assign extra weight to new posts.
  • Let the user choose between AND and OR searches, use + and – operator (AND and NOT).
  • Highlighting search terms for visitors from external search engines.
  • Export and import settings.
  • WP CLI commands.

Relevanssi in Facebook

You can find Relevanssi in Facebook.

Gracias

  • Cristian Damm for tag indexing, comment indexing, post/page exclusion and general helpfulness.
  • Marcus Dalgren for UTF-8 fixing.
  • Warren Tape for 2.5.5 fixes.
  • Mohib Ebrahim for relentless bug hunting.
  • John Calahan for extensive 4.0 beta testing.

Capturas

  • Overview page
  • Indexing settings
  • Searching settings
  • Logging settings
  • Excerpts and highlights
  • Synonym settings
  • Stopword settings

Instalación

  1. Install the plugin from the WordPress plugin screen.
  2. Activate the plugin.
  3. Go to the plugin settings page and build the index following the instructions there.
  4. That’s it!

Relevanssi uses the standard search form and doesn’t usually need any changes in the search results template.

If the search does not bring any results, your theme probably has a query_posts() call in the search results template. That throws Relevanssi off. For more information, see The most important Relevanssi debugging trick.

Uninstalling

To uninstall the plugin remove the plugin using the normal WordPress plugin management tools (from the Plugins page, first Deactivate, then Delete). If you remove the plugin files manually, the database tables and options will remain.

Preguntas frecuentes

Knowledge Base

You can find solutions and answers at the Relevanssi Knowledge Base.

Contextual help

Answers to many common problems can be found from the contextual menu. Just click “Help” in the top right corner of your WordPress admin dashboard on the Relevanssi settings page.

Relevanssi doesn’t work

If you the results don’t change after installing and activating Relevanssi, the most likely reason is that you have a call to query_posts() on your search results template. This confuses Relevanssi. Try removing the query_posts() call and see what happens.

Searching for words with ampersands or hyphens doesn’t work

Please read Words with punctuation can’t be found. This is a Relevanssi feature, but you can fix it from Relevanssi indexing settings.

Where are the user search logs?

See the top of the admin menu. There’s ‘User searches’.

Displaying the relevance score

Relevanssi stores the relevance score it uses to sort results in the $post variable. Just add something like

echo $post->relevance_score

to your search results template inside a PHP code block to display the relevance score.

Did you mean? suggestions

Relevanssi offers Google-style “Did you mean?” suggestions. See “Did you mean” suggestions in the Knowledge Base for more details.

What is tf * idf weighing?

It’s the basic weighing scheme used in information retrieval. Tf stands for term frequency while idf is inverted document frequency. Term frequency is simply the number of times the term appears in a document, while document frequency is the number of documents in the database where the term appears.

Thus, the weight of the word for a document increases the more often it appears in the document and the less often it appears in other documents.

What are stop words?

Each document database is full of useless words. All the little words that appear in just about every document are completely useless for information retrieval purposes. Basically, their inverted document frequency is really low, so they never have much power in matching. Also, removing those words helps to make the index smaller and searching faster.

Reseñas

How do you use the search?

I have installed this plugin but how do I get the search to show up on my page, possibly at right side of the menu at the top of the page?

Great plug in

Really useful plug-in. Glad I found it. Pulls up the right info unlike some others that I have tried. Relevance is extremely important to me, since my site is primarily information oriented and not a blog, so dates are pretty much irrelevant, and could actually confuse visitors to my site.

I have a travel website, so if I write about a certain church in Rome, for example, it doesn’t matter when it was written…a year ago or yesterday. It is the relevance that counts and this plug-in does a great job.

Works like a charm

After going through the settings, and setting up the index, this plugin worked like a charm.

If people report that they are getting too much category feedback, I can easily switch around the weighting. Very nice plugin. It sure saves me headaches, now that my blog has hundreds of entries.

Excellent plugin, excellent support

This plugin is a huge improvement over the default search. I needed a specific configuration and Mikko went above and beyond to write me the code I needed to make this work. Excellent support!

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Colaboradores y desarrolladores

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Registro de cambios

4.1.1.2

  • Fixes the broken User searches page.

4.1.1.1

  • Adding the missing Gutenberg compatibility file.

4.1.1

  • Relevanssi can now index Gutenberg reusable blocks. (This functionality broke once already before release, so that can happen, since Gutenberg is still in very active development.)
  • The post__in and post__not_in parameters didn’t work, and are now fixed. post_parent__in and post_parent__not_in are also improved.
  • You can use named meta queries for sorting posts. Meta query sorting is improved in other ways as well.
  • Log export didn’t work properly.
  • Adding stopwords from the common word list has been fixed.
  • The relevanssi_get_words_having filter hook is now also applied to the free version Did you mean queries.
  • New filters: relevanssi_1day and relevanssi_7days can be used to adjust the number of days for log displays, so instead of 1, 7 and 30 days you can have anything you want.

4.1.0.1

  • Actually working admin search.

4.1

  • New feature: You can now export the search log as a CSV file.
  • New feature: Admin Search page allows you to perform searches in WP admin using Relevanssi.
  • New filter: relevanssi_admin_search_capability can be used to adjust who sees the admin search page.
  • New filter: relevanssi_entities_inside_pre and relevanssi_entities_inside_code adjust how HTML entities are handled inside pre and code tags.
  • Numeric meta values (meta_value_num) are now sorted as numbers and not strings.
  • Pinned posts have $post->relevanssi_pinned set to 1 for debugging purposes, but you can also use this for styling the posts in the search results templates.
  • The Did you mean feature has been toned down a bit, to make the suggestions slightly less weird in some cases.
  • Post parent parameters now accept 0 as a value, making it easier to search for children of any post or posts without a parent.
  • Polylang compatibility has been improved.
  • Phrases with apostrophes inside work better.
  • The relevanssi_excerpt filter hook got a second parameter that holds the post ID.
  • Custom field sorting actually works now.
  • WP Search Suggest compatibility added.

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