Using Hooks and Filters

Smart Search

Hooks and Filters

wpe_smartsearch/extra_fields

Filters the post fields before indexing.

apply_filters( 'wpe_smartsearch/extra_fields', string $data, WP_Post $post )

Description

Use this filter to add or remove fields before an object is indexed.

Parameters

$data array

Contains all of the data before indexing.

$post WP_Post

The current post object being indexed.

Examples

Adding a custom field.

add_filter(
    'wpe_smartsearch/extra_fields',
    function( array $data, WP_Post $post ) {
        $data['custom-field'] = 'custom field test';
        return $data;
    },
    10,
    2
);

Adding the post permalink.

add_filter(
    'wpe_smartsearch/extra_fields',
    function( array $data, WP_Post $post ) {
        //sample value http://localhost:8000/hello-world
        $data['url'] = get_permalink($post);
        return $data;
    },
    10,
    2
);

Adding the post locale with a language plugin, i.e. polylang

add_filter(
    'wpe_smartsearch/extra_fields',
    function( array $data, WP_Post $post ) {
        //sample valus EN | ES
        $data['locale'] = pll_get_post_language($post->ID);
        return $data;
    },
    10,
    2
);

wpe_smartsearch/extra_search_config_fields

Filters the search config fields.

apply_filters( 'wpe_smartsearch/extra_search_config_fields', array $fields, string $post_type )

Description

Use this filter to add or remove fields to the Search Config.

Parameters

$fields array

Contains all of the search config fields for the given $post_type.

$post WP_Post

The current post_type being processed for Search Config fields.

Examples

Adding a custom search config field.

add_filter(
    'wpe_smartsearch/extra_search_config_fields',
    function ( $fields, $post_type ) {
        if ($post_type === 'post' ) {
            $fields[] = 'my-custom-field';
        }

        return $fields;
    },
    10,
    2
);

NOTE: this hook will be ran multiple times for each post type that exists.

The following search config field will get added to all post types.

add_filter(
    'wpe_smartsearch/extra_search_config_fields',
    function ( $fields, $post_type ) {
        $fields[] = 'all-post-types-custom-field';
        return $fields;
    },
    10,
    2
);

wpe_smartsearch/excluded_post_types

Filters the post types ban list.

apply_filters( 'wpe_smartsearch/excluded_post_types' );

Description

Filters a list of post types that won’t be considered for WP Engine Smart Search

Examples

add_filter(
    'wpe_smartsearch/excluded_post_types',
    function (  ) {
        return array(
            'zombie',
            'rabbit',
            'page'
        );
    },
    10,
    2
);

wpe_smartsearch/search/facet_blocks_enabled

Enables or disables WPE Engine Smart Search search-related Facets.

apply_filters( 'wpe_smartsearch/search/facet_blocks_enabled', true )

Description

This filter enables or disables the search-related Facet Blocks provided by WP Engine Smart Search. They are enabled by default. It would be useful to disable them if you are not using them, or if there is a conflict with your custom facets, theme or plugin.

Examples

Disabling WPE Engine Smart Search Facets.

add_filter( 'wpe_smartsearch/search/facet_blocks_enabled', '__return_false' );

wpe_smartsearch/acf/excluded_field_names

Filter ACF fields from being indexed to WPE Engine Smart Search.

$excluded_field_names = apply_filters( 'wpe_smartsearch/acf/excluded_field_names', array() );

Description

This filter prevents ACF fields to be indexed using the field name. This is very useful for a number of reasons:

• Preventing unnecessary data from being indexed, increases performance.
• Prevents errors from being thrown when indexing data ( Errors like: Limit of total fields [1000] has been exceeded )

Examples

You would want to prevent ACF fields with names ‘acf_field_name1’, ‘acf_field_name2’, ‘acf_field_name3’ are not indexed.

add_filter( 'wpe_smartsearch/acf/excluded_field_names', function ( $excluded_field_names ) {
    $custom_excluded_field_names= array(
       'acf_field_name1',
       'acf_field_name2',
       'acf_field_name3',
    );

    return array_merge($excluded_field_names,$custom_excluded_field_names );
   },
 10,
 1
);

wpe_smartsearch/allow_post_content_filtering

Allow post content filtering before it is indexed by WP Engine Smart Search.

  $allow_post_content_filtering    = apply_filters( 'wpe_smartsearch/allow_post_content_filtering', true );

  if ( $allow_post_content_filtering ) {
    $post_array['post_content'] = handle_tags( $post_array['post_content'] );
  }

Description

This filter enables or disables the default content stripping before it is indexed. By default, WP Engine Smart Search strips all HTML tags, shortcodes, and block editor comments from the content via the handle_tags function.

You can use this filter to disable the default content stripping. This is useful if you want to:

• Preserve certain HTML tags or implement your own content cleaning logic.
• Use a custom content processing function, as the default stripping might be memory-intensive for very large post content
• Custom post content processing function can be implemented by using the wpe_smartsearch/extra_fields filter.

Note

This filter is enabled by default. If you encounter indexing issues, such as out-of-memory errors, it may indicate that your hosting plan needs an upgrade to handle the higher memory requirements for processing large posts.

Examples

You want to prevent the default HTML stripping for all posts to preserve the HTML structure in the search index.

    add_filter(
      'wpe_smartsearch/allow_post_content_filtering',
      '__return_false'
    );