repeater = 'team_attendants'; // Name of the repeater field that are to be downloadable.
// @TODO add the post type that the download button should be displayed at.
$this->post_types = 'hold'; // The post type that the download metabox is to be displayed at.
$this->init();
}
public function init() {
// Register meta box.
add_action( 'add_meta_boxes', array( $this, 'register_meta_boxes' ) );
// Add a new custom endpoint for the download rule.
add_action( 'init', array( $this, 'add_rewrite_rule' ) );
add_filter( 'query_vars', array( $this, 'add_query_vars' ) );
// Generate the file.
add_action( 'parse_request', array( $this, 'parse_request' ) );
}
/**
* Handle the custom endpoint we added.
*/
public function parse_request( $wp ) {
// If the key does not exist, stop execution.
if ( ! array_key_exists( 'cs-repeater-page-id', $wp->query_vars ) ) {
return;
}
$page = absint( $wp->query_vars['cs-repeater-page-id'] );
$output = '';
if( have_rows( $this->repeater, $page ) ) {
$rows = get_field( $this->repeater, $page );
$field_count = count( $rows[0] );
foreach ( $rows as $fields ) {
$count = 1;
foreach ( $fields as $value ) {
$output .= $value;
$count++;
if ( $count < $field_count ) {
$output .= ',';
}
}
$output .= "\n";
}
}
// Send the downloadable file.
header("Content-type: text/plain");
header("Content-Disposition: attachment; filename=attendants.txt");
// Print the content.
print $output;
exit();
}
/**
* Add the needed query args.
*/
public function add_query_vars( $query_vars ) {
$query_vars[] = 'cs-repeater-page-id';
return $query_vars;
}
/**
* Adds a rewrite rule for our downloadable file.
*/
public function add_rewrite_rule() {
add_rewrite_rule( '^cs-repeater-download/([0-9]+)/?', 'index.php?cs-repeater-page-id=$matches[1]', 'top' );
}
/**
* Register meta box(es).
*/
public function register_meta_boxes() {
add_meta_box( 'meta-box-id', __( 'Download teams', 'cs-repeater-download' ), array( $this, 'meta_box_callback' ), $this->post_types, 'side' );
}
/**
* Meta box display callback.
*
* @param \WP_Post $post Current post object.
*/
public function meta_box_callback( $post ) {
?>