Hi,
Please I have a some problem with filters in search in WordPress, it's for a music website and I need to filter the search by artist (taxonomy), album (title, thats ok), songs (meta) and regular search. I only have album and regular, but I have some problems with artist and songs. Please help me.
class Search_Filters{
function __construct(){
add_filter( 'query_vars', array($this,'register_vars') );
$this->search_hooks();
}
function register_vars($vars){
$vars[] = "type";
return $vars;
}
function search_hooks(){
if ( get_query_var('type')=='artista' ) {
add_filter( 'posts_join', array( &$this, 'search_by_artista_join' ), 10, 2);
add_filter( 'posts_where', array( &$this, 'search_by_artista_where' ), 10, 2);
}
add_filter( 'posts_search', array( &$this, 'search_where' ), 10, 2 );
add_filter( 'posts_where', array( &$this, 'no_revisions' ) );
add_filter( 'posts_where', array( &$this, 'no_future' ) );
}
function search_where($where, $wp_query){
if ( !$wp_query->is_search() )
return $where;
$this->query_instance = &$wp_query;
global $wpdb;
$searchQuery = $this->search_default();
if( get_query_var('type')=='album' ){
$searchQuery = $this->search_by_title();
}
if( get_query_var('type')=='artista' ){
$searchQuery = $this->search_by_artista_where();
}
if ( $searchQuery != '' ) {
$where = preg_replace( '#\(\(\(.*?\)\)\)#', '(('.$searchQuery.'))', $where );
}
return $where;
}
function search_default(){
global $wpdb;
$not_exact = empty($this->query_instance->query_vars['exact']);
$search_sql_query = '';
$seperator = '';
$terms = $this->get_search_terms();
// if it's not a sentance add other terms
$search_sql_query .= '(';
foreach ( $terms as $term ) {
$search_sql_query .= $seperator;
$esc_term = esc_sql($term);
if ($not_exact) {
$esc_term = "%$esc_term%";
}
$like_title = "($wpdb->posts.post_title LIKE '$esc_term')";
$like_post = "($wpdb->posts.post_content LIKE '$esc_term')";
$search_sql_query .= "($like_title OR $like_post)";
$seperator = ' AND ';
}
$search_sql_query .= ')';
return $search_sql_query;
}
function search_by_title(){
global $wpdb;
$not_exact = empty($this->query_instance->query_vars['exact']);
$search_sql_query = '';
$seperator = '';
$terms = $this->get_search_terms();
// if it's not a sentance add other terms
$search_sql_query .= '(';
foreach ( $terms as $term ) {
$search_sql_query .= $seperator;
$esc_term = esc_sql($term);
if ($not_exact) {
$esc_term = "%$esc_term%";
}
$like_title = "($wpdb->posts.post_title LIKE '$esc_term')";
$search_sql_query .= "($like_title)";
$seperator = ' AND ';
}
$search_sql_query .= ')';
return $search_sql_query;
}
function search_by_artista(){
global $wpdb;
$not_exact = empty($this->query_instance->query_vars['exact']);
$search_sql_query = '';
$seperator = '';
$terms = $this->get_search_terms();
// if it's not a sentance add other terms
$search_sql_query .= '(';
foreach ( $terms as $term ) {
$search_sql_query .= $seperator;
$esc_term = esc_sql($term);
if ($not_exact) {
$esc_term = "%$esc_term%";
}
$like_title = "($wpdb->posts.post_title LIKE '$esc_term')";
$like_post = "($wpdb->posts.post_content NOT LIKE '$esc_term')";
$search_sql_query .= "($like_title OR $like_post)";
$seperator = ' AND ';
}
$search_sql_query .= ')';
return $search_sql_query;
}
function search_by_artista_join( $join ) {
global $wpdb;
if ( !empty( $this->query_instance->query_vars['s'] ) ) {
// join term_relationships, term_taxonomy, and terms into the current SQL where clause
$join .= "
INNER JOIN
{$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 ";
}
return $join;
}
/*
function search_by_artista_join( $join ) {
global $wpdb;
if ( !empty( $this->query_instance->query_vars['s'] ) ) {
// if we're searching for categories
if ( $this->options['se_use_category_search'] ) {
$on[] = "ttax.taxonomy = 'artista'";
}
$on = ' ( ' . implode( ' OR ', $on ) . ' ) ';
$join .= " LEFT JOIN $wpdb->term_relationships AS trel ON ($wpdb->posts.ID = trel.object_id) LEFT JOIN $wpdb->term_taxonomy AS ttax ON ( " . $on . " AND trel.term_taxonomy_id = ttax.term_taxonomy_id) LEFT JOIN $wpdb->terms AS tter ON (ttax.term_id = tter.term_id) ";
}
//$this->se_log( "tags join: ".$join );
return $join;
}
*/
function search_by_artista_where( $where, $query ){
global $wpdb;
if ( !empty( $this->query_instance->query_vars['s'] ) ) {
$where .= " OR ( {$wpdb->term_taxonomy}.taxonomy IN('artista') ";
$where .= " AND {$wpdb->terms}.name LIKE '%" . $wpdb->escape( get_query_var('s') ) . "%' )";
}
return $where;
}
function get_search_terms() {
global $wpdb;
$s = isset( $this->query_instance->query_vars['s'] ) ? $this->query_instance->query_vars['s'] : '';
$sentence = isset( $this->query_instance->query_vars['sentence'] ) ? $this->query_instance->query_vars['sentence'] : false;
$search_terms = array();
if ( !empty( $s ) ) {
// added slashes screw with quote grouping when done early, so done later
$s = stripslashes( $s );
if ( $sentence ) {
$search_terms = array( $s );
} else {
preg_match_all( '/".*?("|$)|((?<=[\\s",+])|^)[^\\s",+]+/', $s, $matches );
$search_terms = array_map( create_function( '$a', 'return trim($a, "\\"\'\\n\\r ");' ), $matches[0] );
}
}
return $search_terms;
}
// FIXES
function no_revisions( $where ) {
global $wpdb;
if ( !empty( $this->query_instance->query_vars['s'] ) ) {
if ( !$this->wp_ver28 ) {
$where = 'AND (' . substr( $where, strpos( $where, 'AND' )+3 ) . ") AND $wpdb->posts.post_type != 'revision'";
}
$where = ' AND (' . substr( $where, strpos( $where, 'AND' )+3 ) . ') AND post_type != \'revision\'';
}
return $where;
}
function no_future( $where ) {
global $wpdb;
if ( !empty( $this->query_instance->query_vars['s'] ) ) {
if ( !$this->wp_ver28 ) {
$where = 'AND (' . substr( $where, strpos( $where, 'AND' )+3 ) . ") AND $wpdb->posts.post_status != 'future'";
}
$where = 'AND (' . substr( $where, strpos( $where, 'AND' )+3 ) . ') AND post_status != \'future\'';
}
return $where;
}
}
