Wordpress search result postmeta and term - mysql

Question

What´s the problem with this?
I´m trying to search in wp_postmeta and wp_terms but i getting just one or another, never both. I already tried change OR to AND in WHERE, but nothing happens and no result is printed.
Thanks!
$join .= "
LEFT JOIN $wpdb->postmeta ON $wpdb->posts.ID = $wpdb->postmeta.post_id
LEFT JOIN $wpdb->term_relationships ON $wpdb->posts.ID = $wpdb->term_relationships.object_id
INNER JOIN $wpdb->term_taxonomy ON $wpdb->term_taxonomy.term_taxonomy_id = $wpdb->term_relationships.term_taxonomy_id
INNER JOIN $wpdb->terms ON $wpdb->terms.term_id = $wpdb->term_taxonomy.term_id
";
and this...
$where .= "
OR ( $wpdb->postmeta.meta_value LIKE '%".get_search_query()."%' AND $wpdb->posts.post_status = 'publish' )
OR ( $wpdb->terms.name LIKE '%".get_search_query()."%' AND $wpdb->posts.post_status = 'publish' )
";
UPDATE 1
After reading here https://support.advancedcustomfields.com/forums/topic/mistake-in-documentation-query-posts-by-custom-fields/ — I´ve changed the two "inner join" for "join" and it worked fine. I don´t know exactly why it works. But unfortunately still very slow to get the results.
Could you tell me if this is the best approach for what I'm looking for?
add_filter( 'posts_join', 'custom_search_join' );
add_filter( 'posts_where', 'custom_search_where' );
add_filter( 'posts_distinct', 'custom_search_distinct' );
function custom_search_join( $join ) {
global $wpdb;
if( !is_admin() ) {
if( is_search() ) {
$join .= "
LEFT JOIN $wpdb->postmeta ON $wpdb->posts.ID = $wpdb->postmeta.post_id
LEFT JOIN $wpdb->term_relationships ON $wpdb->posts.ID = $wpdb->term_relationships.object_id
LEFT JOIN $wpdb->term_taxonomy ON $wpdb->term_taxonomy.term_taxonomy_id = $wpdb->term_relationships.term_taxonomy_id
LEFT JOIN $wpdb->terms ON $wpdb->terms.term_id = $wpdb->term_taxonomy.term_id
";
print_r( $join ) ;
}
}
return $join;
}
function custom_search_where( $where ) {
global $wpdb;
if( !is_admin() ) {
if( is_search() ) {
$where .= "
OR ( $wpdb->postmeta.meta_value LIKE '%".get_search_query()."%' )
OR ( $wpdb->terms.name LIKE '%".get_search_query()."%' )
AND $wpdb->posts.post_status = 'publish'
";
print_r( $where ) ;
}
}
return $where;
}
function custom_search_distinct( $where ) {
global $wpdb;
if( !is_admin() ) {
if( is_search() ) {
return "DISTINCT";
}
}
return $where;
}
UPDATE 2
After some research and study.
Define list of ACF fields that will be searched
Define taxonomies to be searched
Running fast so far.
If anyone knows of a way to improve this code I really appreciate it.
add_filter( 'posts_search', 'busca_acf', 500, 2 );
function lista_campos_acf() {
$lista_campos_acf = [ 'acf-field-example' ];
return $lista_campos_acf;
}
function lista_taxonomias() {
$lista_taxonomias = [ 'post_tag', 'category', 'example_taxonomy' ];
return $lista_taxonomias;
}
function busca_acf( $where, $wp_query ) {
if( !is_admin() ) {
global $wpdb;
$termos = remove_accents( $wp_query->query_vars[ 's' ] );
$exploded = array_map( 'strtolower', explode( ' ', $termos ) );
$lista_campos_acf = lista_campos_acf();
$lista_taxonomias = lista_taxonomias();
$where = '';
foreach( $exploded as $tag ) {
$where .= "
AND (
( wp_posts.post_title LIKE '%$tag%' )
OR ( wp_posts.post_content LIKE '%$tag%' )
OR EXISTS (
SELECT *
FROM wp_postmeta
WHERE post_id = wp_posts.ID
AND ( ";
foreach( $lista_campos_acf as $campo_acf ) {
if( $campo_acf == $lista_campos_acf[0] ) {
$where .= " ( meta_key LIKE '%" . $campo_acf . "%' AND meta_value LIKE '%$tag%' ) ";
}
else {
$where .= " OR ( meta_key LIKE '%" . $campo_acf . "%' AND meta_value LIKE '%$tag%' ) ";
}
}
$where .= ")
)
OR EXISTS (
SELECT *
FROM wp_terms
INNER JOIN wp_term_taxonomy ON wp_term_taxonomy.term_id = wp_terms.term_id
INNER JOIN wp_term_relationships ON wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id
WHERE ( ";
foreach ( $lista_taxonomias as $tax ) {
if( $tax == $lista_taxonomias[0] ) {
$where .= "taxonomy = '" . $tax . "'";
}
else {
$where .= "OR taxonomy = '" . $tax . "'";
}
}
$where .= ")
AND object_id = wp_posts.ID
AND wp_terms.name LIKE '%$tag%'
)
)
";
}
return $where;
}
}