settings = array( 'version' => '1.0' ); add_action( 'save_post', array($this, 'save_post') ); add_action( 'add_meta_boxes', array($this, 'add_meta_box') ); add_action( 'admin_init', array($this, 'init') ); } function init(){ $styles = array( 'apt' => plugin_dir_url(__FILE__) . 'style.css' ); foreach( $styles as $k => $v ) { wp_register_style( $k, $v, false, $this->settings['version'] ); wp_enqueue_style( $k ); } } function add_meta_box(){ add_meta_box( 'advanced-page-template', 'Custom Fields For Template', array($this, 'callback_add_meta_box'), 'page', 'normal', 'high' ); } function helpers_humanize_string($str){ $str = trim(strtolower($str)); $str = preg_replace('/[^a-z0-9\s+]/', '', $str); $str = preg_replace('/\s+/', ' ', $str); $str = explode(' ', $str); $str = array_map('ucwords', $str); return implode(' ', $str); } function helpers_hash($string){ $array = explode(':', $string); $hash = array(); $pattern = '/$(.*)$/'; preg_match($pattern, $array[1], $matches); if(count($matches) == 2) { $values = explode('|', $matches[1]); $hash = array(trim($array[0]) => $values); }else{ $hash = array(trim($array[0]) => trim($array[1])); } return $hash; } function helpers_array_unique($array, $unique_key) { if (!is_array($array)) { return array(); } $_unique_keys = array(); foreach ($array as $key => $item) { $group_by=$item[$unique_key]; if (isset( $_unique_keys[$group_by])) { continue; } $_unique_keys[$group_by] = $item; } return $_unique_keys; } function extract_fields($path){ $fields = array(); $pattern = '/\@custom_field\s(.*)\n/'; $file_handle = fopen($path, "r"); while (!feof($file_handle)) { $line = fgets($file_handle); preg_match($pattern, $line, $matches); if(count($matches) == 2) { $field_data = explode(',', $matches[1]); $field_name = array_shift($field_data); $field_label = $this->helpers_humanize_string($field_name); $_field = array('name'=>$field_name, 'key'=>$field_name, 'label'=>$field_label); if(count($field_data) > 0){ foreach($field_data as $field_option) { $_option = $this->helpers_hash($field_option); $_field = array_merge($_field, $_option); } } $fields[] = $_field; } } fclose($file_handle); $fields = $this->helpers_array_unique($fields, 'key'); return $fields; } function render_fields($fields){ global $post, $acf; echo "

"; ?>

Click here to rate | Read online document

create_fields($fields, $post->ID); else: ?>

I recommend you to install and activate Advanced Custom Fields plugin that makes the custom fields easy to manage for you.

"; } function callback_add_meta_box($post) { $_template_root = get_template_directory(); $_template_path = get_post_meta($post->ID, '_wp_page_template', true); $_template_full_path = $_template_root.'/'.$_template_path; $fields = $this->extract_fields($_template_full_path); $this->render_fields($fields); } function save_post($post_id){ if(isset($_POST['fields'])) { foreach($_POST['fields'] as $k=>$v) { update_post_meta($post_id, $k, $v); } } } } /* * initialize advanced page template */ function apt() { global $apt; if( !isset($apt) ) { $apt = new apt();; } return $apt; } apt(); endif;