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<?php |
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|
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namespace Boxzilla\Filter; |
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|
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class Autocomplete |
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{ |
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public function init() |
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{ |
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add_action('wp_ajax_boxzilla_autocomplete', [ $this, 'ajax' ]); |
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} |
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|
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/** |
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* AJAX listener for autocomplete |
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*/ |
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public function ajax() |
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{ |
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$q = ( isset($_GET['q']) ) ? sanitize_text_field($_GET['q']) : ''; |
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$type = ( isset($_GET['type']) && in_array($_GET['type'], [ 'page', 'post', 'category', 'post_type', 'post_tag' ], true) ) ? $_GET['type'] : 'post'; |
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|
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// do nothing if supplied 'q' parameter is omitted or empty |
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// or less than 2 characters long |
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if (empty($q) || strlen($q) < 2) { |
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die(); |
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} |
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|
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switch ($type) { |
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default: |
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case 'post': |
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case 'page': |
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echo $this->list_posts($q, $type); |
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break; |
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|
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case 'category': |
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echo $this->list_categories($q); |
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break; |
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|
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case 'post_type': |
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echo $this->list_post_types($q); |
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break; |
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|
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case 'post_tag': |
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echo $this->list_tags($q); |
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break; |
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} |
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|
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die(); |
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} |
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|
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/** |
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* @param string $query |
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* @param string $post_type |
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* |
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* @return string |
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*/ |
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protected function list_posts($query, $post_type = 'post') |
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{ |
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global $wpdb; |
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$sql = $wpdb->prepare("SELECT p.post_name FROM $wpdb->posts p WHERE p.post_type = %s AND p.post_status = 'publish' AND ( p.post_title LIKE %s OR p.post_name LIKE %s ) GROUP BY p.post_name", $post_type, $query . '%%', $query . '%%'); |
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$post_slugs = $wpdb->get_col($sql); |
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return join(PHP_EOL, $post_slugs); |
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} |
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|
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/** |
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* @param string $query |
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* |
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* @return string |
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*/ |
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protected function list_categories($query) |
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{ |
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$terms = get_terms( |
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'category', |
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[ |
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'name__like' => $query, |
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'fields' => 'names', |
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'hide_empty' => false, |
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] |
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); |
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return join(PHP_EOL, $terms); |
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} |
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|
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/** |
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* @param string $query |
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* |
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* @return string |
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*/ |
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protected function list_tags($query) |
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{ |
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$terms = get_terms( |
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'post_tag', |
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[ |
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'name__like' => $query, |
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'fields' => 'names', |
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'hide_empty' => false, |
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] |
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); |
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return join(PHP_EOL, $terms); |
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} |
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|
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|
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/** |
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* @param string $query |
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* |
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* @return string |
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*/ |
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protected function list_post_types($query) |
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{ |
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$post_types = get_post_types([ 'public' => true ], 'names'); |
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$matched_post_types = array_filter( |
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$post_types, |
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function ($name) use ($query) { |
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return strpos($name, $query) === 0; |
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} |
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); |
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|
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return join(PHP_EOL, $matched_post_types); |
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} |
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} |
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|
