Andrew Stichbury

Admin Search makes searching your WordPress website easy by bringing results from all your post types, media, taxonomies, comments, users and admin pages together in a single, simple-to-use interface, seamlessly integrated into the WordPress admin interface.
Choose which post types and taxonomies are searched and the number of results displayed for each. Admin Search also supports custom post types and taxonomies.
Admin Search is a lightweight plugin with filter hooks for deep customization.
<h3>Features</h3>
<ul>
<li>Search everything on your WordPress site, anywhere</li>
<li>Simple and easy to use</li>
<li>Sources of search results are customizable</li>
<li>Extend the search query with filter hooks</li>
</ul>
<h3>Configure & Extend</h3>
Admin Search can be extended by using filter hooks. The following filters are available:
<ul>
<li><code>admin_search_query</code> to modify the search query string. The filter argument supplied is a string containing the search query</li>
<li><code>admin_search_sources</code> to modify the search sources. The filter argument supplied is an array of sources, add, remove or modify sources</li>
<li><code>admin_search_posts_query</code> to modify the <a href="https://developer.wordpress.org/reference/classes/wp_query/" rel="nofollow ugc"><code>WP_Query</code></a> arguments array for all searched post types. The filter argument supplied is an array of <code>WP_Query</code> arguments, add, remove or modify supported arguments</li>
<li><code>admin_search_{Post Type}_query</code> to modify the <a href="https://developer.wordpress.org/reference/classes/wp_query/" rel="nofollow ugc"><code>WP_Query</code></a> arguments array for a specific post type. The filter argument supplied is an array of <code>WP_Query</code> arguments, add, remove or modify supported arguments. Replace {Post Type} with the name of the post type to modify</li>
<li><code>admin_search_terms_query</code> to modify the <a href="https://developer.wordpress.org/reference/functions/get_terms/" rel="nofollow ugc"><code>get_terms</code></a> arguments array for all searched terms (taxonomies). The filter argument supplied is an array of <code>get_terms</code> arguments, add, remove or modify supported arguments</li>
<li><code>admin_search_{Term}_query</code> to modify the <a href="https://developer.wordpress.org/reference/functions/get_terms/" rel="nofollow ugc"><code>get_terms</code></a> arguments array for a specific term (taxonomy). The filter argument supplied is an array of <code>get_terms</code> arguments, add, remove or modify supported arguments. Replace {Term} with the name of the term to modify</li>
<li><code>admin_search_comments_query</code> to modify the <a href="https://developer.wordpress.org/reference/classes/wp_comment_query/" rel="nofollow ugc"><code>WP_Comment_Query</code></a> arguments array for all searched comments. The filter argument supplied is an array of <code>WP_Comment_Query</code> arguments, add, remove or modify supported arguments</li>
<li><code>admin_search_users_query</code> to modify the <a href="https://developer.wordpress.org/reference/classes/WP_User_Query/" rel="nofollow ugc"><code>WP_User_Query</code></a> arguments array for all searched users. The filter argument supplied is an array of <code>admin_search_users_query</code> arguments, add, remove or modify supported arguments</li>
<li><code>admin_search_website_titles</code> to modify the labels array for external websites. The filter argument supplied is an array of predefined domains and titles, add, remove or modify domains and titles</li>
<li><code>admin_search_pre_results</code> and <code>admin_search_post_results</code> to modify the results array before or after results are appended to the array. The filter argument supplied is an empty array for <code>admin_search_pre_results</code> or search results for a given query for <code>admin_search_post_results</code>, add, remove or modify result items</li>
<li><code>admin_search_fields</code> to modify the searchable fields array. The filter argument supplied is an array of searchable fields (<code>post_title</code>, <code>post_name</code>, <code>post_excerpt</code> and <code>post_content</code>)</li>
<li><code>admin_search_meta_queries</code> to add custom fields to the searchable fields array. The filter argument supplied is an empty array. Use this filter instead of <code>admin_search_fields</code> when adding custom fields</li>
</ul>
Examples:
Modify the query string before a search is initiated
<pre><code>// Correct the spelling of dog when searching
add_filter( 'admin_search_query', function( $query ) {
 if ( 'dog' === $query ) {
 $query = 'doggo';
 }

 return $query;
} );
</code></pre>
Modify the <code>WP_Query</code> parameters before a search is initiated
<pre><code>// Exclude post with the ID 96
add_filter( 'admin_search_posts_query', function( $query ) {
 $query['post__not_in'] = array( 96 );

 return $query;
} );
</code></pre>
Add a custom field to the searchable fields
<pre><code>// Add the price custom field to the searchable fields
add_filter( 'admin_search_meta_queries', function( $fields, $post_type ) {
 if ( 'post' === $post_type ) {
 $fields[] = 'price';
 }

 return $fields;
}, 10, 2 );
</code></pre>
Modify the search results after a search has initiated
<pre><code>// Add custom results from external API
add_filter( 'admin_search_post_results', function( $results, $q ) {
 $results[ 'custom' ][ 'post_type' ] => array(
 'name' => 'custom',
 'label' => 'Custom'
 );

 $json = file_get_contents( 'https://example.com?search=' . $q );
 $obj = json_decode( $json );

 foreach ( $obj as $item ) {
 $results[ 'custom' ][ 'posts' ][] = array(
 …
 );
 }

 return $results;
}, 10, 2 );
</code></pre>

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