__( 'You may only upload maximum %d file', 'meta-box' ),
'maxFileUploadsPlural' => __( 'You may only upload maximum %d files', 'meta-box' ),
) );
}
/**
* Add actions
*
* @return void
*/
static function add_actions()
{
// Add data encoding type for file uploading
add_action( 'post_edit_form_tag', array( __CLASS__, 'post_edit_form_tag' ) );
// Delete file via Ajax
add_action( 'wp_ajax_rwmb_delete_file', array( __CLASS__, 'wp_ajax_delete_file' ) );
// allow reordering
add_action( 'wp_ajax_rwmb_reorder_files', array( __CLASS__, 'wp_ajax_reorder_files' ) );
}
/**
* Ajax callback for reordering images
*
* @return void
*/
static function wp_ajax_reorder_files()
{
$field_id = isset( $_POST['field_id'] ) ? $_POST['field_id'] : 0;
$order = isset( $_POST['order'] ) ? $_POST['order'] : '';
$post_id = isset( $_POST['post_id'] ) ? intval( $_POST['post_id'] ) : 0;
check_ajax_referer( "rwmb-reorder-files_{$field_id}" );
parse_str( $order, $items );
delete_post_meta( $post_id, $field_id );
foreach ( $items['item'] as $item )
{
add_post_meta( $post_id, $field_id, $item, false );
}
wp_send_json_success();
}
/**
* Add data encoding type for file uploading
*
* @return void
*/
static function post_edit_form_tag()
{
echo ' enctype="multipart/form-data"';
}
/**
* Ajax callback for deleting files.
* Modified from a function used by "Verve Meta Boxes" plugin
*
* @link http://goo.gl/LzYSq
* @return void
*/
static function wp_ajax_delete_file()
{
$post_id = isset( $_POST['post_id'] ) ? intval( $_POST['post_id'] ) : 0;
$field_id = isset( $_POST['field_id'] ) ? $_POST['field_id'] : 0;
$attachment_id = isset( $_POST['attachment_id'] ) ? intval( $_POST['attachment_id'] ) : 0;
$force_delete = isset( $_POST['force_delete'] ) ? intval( $_POST['force_delete'] ) : 0;
check_ajax_referer( "rwmb-delete-file_{$field_id}" );
delete_post_meta( $post_id, $field_id, $attachment_id );
$ok = $force_delete ? wp_delete_attachment( $attachment_id ) : true;
if ( $ok )
wp_send_json_success();
else
wp_send_json_error( __( 'Error: Cannot delete file', 'meta-box' ) );
}
/**
* Get field HTML
*
* @param mixed $meta
* @param array $field
*
* @return string
*/
static function html( $meta, $field )
{
$i18n_title = apply_filters( 'rwmb_file_upload_string', _x( 'Upload Files', 'file upload', 'meta-box' ), $field );
$i18n_more = apply_filters( 'rwmb_file_add_string', _x( '+ Add new file', 'file upload', 'meta-box' ), $field );
// Uploaded files
$html = self::get_uploaded_files( $meta, $field );
$new_file_classes = array( 'new-files' );
if ( ! empty( $field['max_file_uploads'] ) && count( $meta ) >= (int) $field['max_file_uploads'] )
$new_file_classes[] = 'hidden';
// Show form upload
$html .= sprintf(
'',
implode( ' ', $new_file_classes ),
$i18n_title,
$field['id'],
$i18n_more
);
return $html;
}
static function get_uploaded_files( $files, $field )
{
$reorder_nonce = wp_create_nonce( "rwmb-reorder-files_{$field['id']}" );
$delete_nonce = wp_create_nonce( "rwmb-delete-file_{$field['id']}" );
$classes = array( 'rwmb-file', 'rwmb-uploaded' );
if ( count( $files ) <= 0 )
$classes[] = 'hidden';
$ol = '';
$html = sprintf(
$ol,
implode( ' ', $classes ),
$field['id'],
$delete_nonce,
$reorder_nonce,
$field['force_delete'] ? 1 : 0,
$field['max_file_uploads'],
$field['mime_type']
);
foreach ( $files as $attachment_id )
{
$html .= self::file_html( $attachment_id );
}
$html .= '
';
return $html;
}
static function file_html( $attachment_id )
{
$i18n_delete = apply_filters( 'rwmb_file_delete_string', _x( 'Delete', 'file upload', 'meta-box' ) );
$i18n_edit = apply_filters( 'rwmb_file_edit_string', _x( 'Edit', 'file upload', 'meta-box' ) );
$li = '
%s
';
$mime_type = get_post_mime_type( $attachment_id );
return sprintf(
$li,
$attachment_id,
wp_get_attachment_image( $attachment_id, array( 60, 60 ), true ),
wp_get_attachment_url( $attachment_id ),
get_the_title( $attachment_id ),
$mime_type,
$i18n_edit,
get_edit_post_link( $attachment_id ),
$i18n_edit,
$i18n_delete,
$attachment_id,
$i18n_delete
);
}
/**
* Get meta values to save
*
* @param mixed $new
* @param mixed $old
* @param int $post_id
* @param array $field
*
* @return array|mixed
*/
static function value( $new, $old, $post_id, $field )
{
$name = $field['id'];
if ( empty( $_FILES[$name] ) )
return $new;
$new = array();
$files = self::fix_file_array( $_FILES[$name] );
foreach ( $files as $file_item )
{
$file = wp_handle_upload( $file_item, array( 'test_form' => false ) );
if ( ! isset( $file['file'] ) )
continue;
$file_name = $file['file'];
$attachment = array(
'post_mime_type' => $file['type'],
'guid' => $file['url'],
'post_parent' => $post_id,
'post_title' => preg_replace( '/\.[^.]+$/', '', basename( $file_name ) ),
'post_content' => '',
);
$id = wp_insert_attachment( $attachment, $file_name, $post_id );
if ( ! is_wp_error( $id ) )
{
wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $file_name ) );
// Save file ID in meta field
$new[] = $id;
}
}
return array_unique( array_merge( $old, $new ) );
}
/**
* Fixes the odd indexing of multiple file uploads from the format:
* $_FILES['field']['key']['index']
* To the more standard and appropriate:
* $_FILES['field']['index']['key']
*
* @param array $files
*
* @return array
*/
static function fix_file_array( $files )
{
$output = array();
foreach ( $files as $key => $list )
{
foreach ( $list as $index => $value )
{
$output[$index][$key] = $value;
}
}
return $output;
}
/**
* Normalize parameters for field
*
* @param array $field
*
* @return array
*/
static function normalize_field( $field )
{
$field = wp_parse_args( $field, array(
'std' => array(),
'force_delete' => false,
'max_file_uploads' => 0,
'mime_type' => '',
) );
$field['multiple'] = true;
return $field;
}
/**
* Standard meta retrieval
*
* @param int $post_id
* @param array $field
* @param bool $saved
*
* @return mixed
*/
static function meta( $post_id, $saved, $field )
{
$meta = parent::meta( $post_id, $saved, $field );
return empty( $meta ) ? array() : (array) $meta;
}
}
}