MetaValuesFactory.php
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<?php
namespace AC\Helper\Select;
use AC\MetaType;
class MetaValuesFactory {
/**
* @param string $meta_type
* @param string $meta_key
* @param string|null $post_type
*
* @return array
*/
public static function create( $meta_type, $meta_key, $post_type = null ) {
global $wpdb;
switch ( $meta_type ) {
case MetaType::POST :
$sql = $wpdb->prepare( "
SELECT DISTINCT pm.meta_value
FROM $wpdb->postmeta AS pm
LEFT JOIN $wpdb->posts AS ps ON ps.ID = pm.post_id
WHERE pm.meta_key = %s
AND pm.meta_value != ''
AND ps.post_status != 'trash'
", (string) $meta_key );
if ( $post_type ) {
$sql .= $wpdb->prepare( " AND ps.post_type = %s", (string) $post_type );
}
return $wpdb->get_col( $sql );
case MetaType::USER :
return $wpdb->get_col( $wpdb->prepare( "
SELECT DISTINCT um.meta_value
FROM $wpdb->usermeta AS um
LEFT JOIN $wpdb->users AS us ON us.ID = um.user_id
WHERE um.meta_key = %s
AND um.meta_value != ''
;
", $meta_key ) );
case MetaType::COMMENT :
return $wpdb->get_col( $wpdb->prepare( "
SELECT DISTINCT cm.meta_value
FROM $wpdb->commentmeta AS cm
LEFT JOIN $wpdb->comments AS cs ON cs.comment_ID = cm.comment_id
WHERE cm.meta_key = %s
AND cm.meta_value != ''
;
", $meta_key ) );
case MetaType::TERM :
return $wpdb->get_col( $wpdb->prepare( "
SELECT DISTINCT tm.meta_value
FROM $wpdb->termmeta AS tm
LEFT JOIN $wpdb->terms AS ts ON ts.term_id = tm.term_id
WHERE tm.meta_key = %s
AND tm.meta_value != ''
;
", $meta_key ) );
default :
return [];
}
}
}