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<?php
/**
* Add support for editing attachment custom fields in the media modal.
*/
class RWMB_Media_Modal {
/**
* List of custom fields.
*
* @var array
*/
protected $fields = [];
public function init() {
// Meta boxes are registered at priority 20, so we use 30 to capture them all.
add_action( 'init', [ $this, 'get_fields' ], 30 );
add_filter( 'attachment_fields_to_edit', [ $this, 'add_fields' ], 11, 2 );
add_filter( 'attachment_fields_to_save', [ $this, 'save_fields' ], 11, 2 );
}
public function get_fields() {
$meta_boxes = rwmb_get_registry( 'meta_box' )->all();
foreach ( $meta_boxes as $meta_box ) {
if ( $this->is_in_modal( $meta_box->meta_box ) ) {
$this->fields = array_merge( $this->fields, array_values( $meta_box->fields ) );
}
}
}
/**
* Add fields to the attachment edit popup.
*
* @param array $form_fields An array of attachment form fields.
* @param WP_Post $post The WP_Post attachment object.
*
* @return mixed
*/
public function add_fields( $form_fields, $post ) {
if ( empty( $post ) || $this->is_attachment_edit_screen() ) {
return $form_fields;
}
foreach ( $this->fields as $field ) {
$form_field = $field;
$form_field['label'] = $field['name'];
$form_field['input'] = 'html';
// Just ignore the field 'std' because there's no way to check it.
$meta = RWMB_Field::call( $field, 'meta', $post->ID, true );
$form_field['value'] = $meta;
$field['field_name'] = 'attachments[' . $post->ID . '][' . $field['field_name'] . ']';
ob_start();
$field['name'] = ''; // Don't show field label as it's already handled by WordPress.
RWMB_Field::call( 'show', $field, true, $post->ID );
// For MB Custom Table to flush data from the cache to the database.
do_action( 'rwmb_flush_data', $post->ID, $field, [] );
$form_field['html'] = ob_get_clean();
$form_fields[ $field['id'] ] = $form_field;
}
return $form_fields;
}
/**
* Save custom fields.
*
* @param array $post An array of post data.
* @param array $attachment An array of attachment metadata.
*
* @return array
*/
public function save_fields( $post, $attachment ) {
foreach ( $this->fields as $field ) {
$key = $field['id'];
$old = RWMB_Field::call( $field, 'raw_meta', $post['ID'] );
$new = isset( $attachment[ $key ] ) ? $attachment[ $key ] : '';
$new = RWMB_Field::process_value( $new, $post['ID'], $field );
// Call defined method to save meta value, if there's no methods, call common one.
RWMB_Field::call( $field, 'save', $new, $old, $post['ID'] );
// For MB Custom Table to flush data from the cache to the database.
do_action( 'rwmb_flush_data', $post['ID'], $field, [] );
}
return $post;
}
private function is_in_modal( array $meta_box ): bool {
return in_array( 'attachment', $meta_box['post_types'], true ) && ! empty( $meta_box['media_modal'] );
}
private function is_attachment_edit_screen(): bool {
if ( ! function_exists( 'get_current_screen' ) ) {
return false;
}
$screen = get_current_screen();
return $screen && $screen->id === 'attachment';
}
}