config = json_decode( $this->config, true ); add_action( 'add_meta_boxes', [ $this, 'add_meta_boxes' ] ); add_action( 'save_post', [ $this, 'save_post' ] ); } public function add_meta_boxes() { foreach ( $this->config['post-type'] as $screen ) { add_meta_box( sanitize_title( $this->config['title'] ), $this->config['title'], [ $this, 'add_meta_box_callback' ], $screen, $this->config['context'], $this->config['priority'] ); } } public function save_post( $post_id ) { foreach ( $this->config['fields'] as $field ) { switch ( $field['type'] ) { default: if ( isset( $_POST[ $field['id'] ] ) ) { $sanitized = sanitize_text_field( $_POST[ $field['id'] ] ); update_post_meta( $post_id, $field['id'], $sanitized ); } } } } public function add_meta_box_callback() { $this->fields_div(); } public function fields_div() { global $post; $post_type = $post->post_type; foreach ( $this->config['fields'] as $field ) { // Skip the "Show Page Banner" field for the 'post' post type if ( $post_type === 'post' && $field['id'] === 'author_portfolio_show-page-banner' ) { continue; } ?>

label( $field ); $this->field( $field ); ?>

%s', $field['id'], $field['label'] ); if ( isset( $field['description'] ) && ! empty( $field['description'] ) ) { printf( '

', esc_html( $field['description'] ) ); } } } private function field( $field ) { switch ( $field['type'] ) { case 'select': $this->select( $field ); break; default: $this->input( $field ); } } private function input( $field ) { printf( '', isset( $field['class'] ) ? $field['class'] : '', $field['id'], $field['id'], isset( $field['pattern'] ) ? "pattern='{$field['pattern']}'" : '', $field['type'], $this->value( $field ) ); } private function select( $field ) { printf( '', $field['id'], $field['id'], $this->select_options( $field ) ); } private function select_selected( $field, $current ) { $value = $this->value( $field ); if ( $value === $current ) { return 'selected'; } return ''; } private function select_options( $field ) { $output = []; $options = explode( "\r\n", $field['options'] ); $i = 0; foreach ( $options as $option ) { $pair = explode( ':', $option ); $pair = array_map( 'trim', $pair ); $output[] = sprintf( '', $this->select_selected( $field, $pair[0] ), $pair[0], $pair[1] ); $i++; } return implode( '
', $output ); } private function value( $field ) { global $post; if ( metadata_exists( 'post', $post->ID, $field['id'] ) ) { $value = get_post_meta( $post->ID, $field['id'], true ); } else if ( isset( $field['default'] ) ) { $value = $field['default']; } else { return ''; } return str_replace( '\u0027', "'", $value ); } } new Author_Portfolio_Meta_Box;