Autosave the revisioned meta fields.
Description
Iterates through the revisioned meta fields and checks each to see if they are set, and have a changed value. If so, the meta value is saved and attached to the autosave.
Parameters
$new_autosave
arrayrequired- The new post data being autosaved.
Source
function wp_autosave_post_revisioned_meta_fields( $new_autosave ) {
/*
* The post data arrives as either $_POST['data']['wp_autosave'] or the $_POST
* itself. This sets $posted_data to the correct variable.
*
* Ignoring sanitization to avoid altering meta. Ignoring the nonce check because
* this is hooked on inner core hooks where a valid nonce was already checked.
*/
$posted_data = isset( $_POST['data']['wp_autosave'] ) ? $_POST['data']['wp_autosave'] : $_POST;
$post_type = get_post_type( $new_autosave['post_parent'] );
/*
* Go thru the revisioned meta keys and save them as part of the autosave, if
* the meta key is part of the posted data, the meta value is not blank and
* the the meta value has changes from the last autosaved value.
*/
foreach ( wp_post_revision_meta_keys( $post_type ) as $meta_key ) {
if (
isset( $posted_data[ $meta_key ] ) &&
get_post_meta( $new_autosave['ID'], $meta_key, true ) !== wp_unslash( $posted_data[ $meta_key ] )
) {
/*
* Use the underlying delete_metadata() and add_metadata() functions
* vs delete_post_meta() and add_post_meta() to make sure we're working
* with the actual revision meta.
*/
delete_metadata( 'post', $new_autosave['ID'], $meta_key );
/*
* One last check to ensure meta value not empty().
*/
if ( ! empty( $posted_data[ $meta_key ] ) ) {
/*
* Add the revisions meta data to the autosave.
*/
add_metadata( 'post', $new_autosave['ID'], $meta_key, $posted_data[ $meta_key ] );
}
}
}
}
Changelog
Version | Description |
---|---|
6.4.0 | Introduced. |
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