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<?php |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly |
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} |
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|
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if ( ! class_exists( 'acf_revisions' ) ) : |
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|
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class acf_revisions { |
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|
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// vars |
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var $cache = array(); |
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|
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|
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/* |
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* __construct |
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* |
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* A good place to add actions / filters |
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* |
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* @type function |
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* @date 11/08/13 |
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* |
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* @param N/A |
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* @return N/A |
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*/ |
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|
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function __construct() { |
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|
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// actions |
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add_action( 'wp_restore_post_revision', array( $this, 'wp_restore_post_revision' ), 10, 2 ); |
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|
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// filters |
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add_filter( 'wp_save_post_revision_check_for_changes', array( $this, 'wp_save_post_revision_check_for_changes' ), 10, 3 ); |
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add_filter( '_wp_post_revision_fields', array( $this, 'wp_preview_post_fields' ), 10, 2 ); |
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add_filter( '_wp_post_revision_fields', array( $this, 'wp_post_revision_fields' ), 10, 2 ); |
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add_filter( 'acf/validate_post_id', array( $this, 'acf_validate_post_id' ), 10, 2 ); |
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|
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} |
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|
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|
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/* |
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* wp_preview_post_fields |
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* |
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* This function is used to trick WP into thinking that one of the $post's fields has changed and |
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* will allow an autosave to be updated. |
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* Fixes an odd bug causing the preview page to render the non autosave post data on every odd attempt |
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* |
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* @type function |
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* @date 21/10/2014 |
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* @since 5.1.0 |
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* |
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* @param $fields (array) |
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* @return $fields |
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*/ |
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|
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function wp_preview_post_fields( $fields ) { |
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|
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// bail early if not previewing a post |
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if ( acf_maybe_get_POST( 'wp-preview' ) !== 'dopreview' ) { |
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return $fields; |
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} |
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|
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// add to fields if ACF has changed |
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if ( acf_maybe_get_POST( '_acf_changed' ) ) { |
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|
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$fields['_acf_changed'] = 'different than 1'; |
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|
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} |
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|
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// return |
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return $fields; |
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|
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} |
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|
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|
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/* |
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* wp_save_post_revision_check_for_changes |
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* |
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* This filter will return false and force WP to save a revision. This is required due to |
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* WP checking only post_title, post_excerpt and post_content values, not custom fields. |
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* |
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* @type filter |
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* @date 19/09/13 |
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* |
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* @param $return (boolean) defaults to true |
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* @param $last_revision (object) the last revision that WP will compare against |
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* @param $post (object) the $post that WP will compare against |
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* @return $return (boolean) |
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*/ |
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|
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function wp_save_post_revision_check_for_changes( $return, $last_revision, $post ) { |
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|
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// if acf has changed, return false and prevent WP from performing 'compare' logic |
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if ( acf_maybe_get_POST( '_acf_changed' ) ) { |
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return false; |
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} |
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|
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// return |
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return $return; |
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|
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} |
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|
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|
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/* |
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* wp_post_revision_fields |
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* |
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* This filter will add the ACF fields to the returned array |
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* Versions 3.5 and 3.6 of WP feature different uses of the revisions filters, so there are |
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* some hacks to allow both versions to work correctly |
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* |
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* @type filter |
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* @date 11/08/13 |
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* |
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* @param $post_id (int) |
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* @return $post_id (int) |
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*/ |
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|
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function wp_post_revision_fields( $fields, $post = null ) { |
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|
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// validate page |
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if ( acf_is_screen( 'revision' ) || acf_is_ajax( 'get-revision-diffs' ) ) { |
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|
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// bail early if is restoring |
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if ( acf_maybe_get_GET( 'action' ) === 'restore' ) { |
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return $fields; |
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} |
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|
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// allow |
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|
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} else { |
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|
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// bail early (most likely saving a post) |
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return $fields; |
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|
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} |
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|
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// vars |
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$append = array(); |
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$order = array(); |
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$post_id = acf_maybe_get( $post, 'ID' ); |
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|
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// compatibility with WP < 4.5 (test) |
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if ( ! $post_id ) { |
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|
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global $post; |
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$post_id = $post->ID; |
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|
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} |
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|
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// get all postmeta |
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$meta = get_post_meta( $post_id ); |
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|
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// bail early if no meta |
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if ( ! $meta ) { |
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return $fields; |
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} |
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|
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// loop |
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foreach ( $meta as $name => $value ) { |
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|
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// attempt to find key value |
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$key = acf_maybe_get( $meta, '_' . $name ); |
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|
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// bail ealry if no key |
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if ( ! $key ) { |
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continue; |
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} |
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|
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// update vars |
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$value = $value[0]; |
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$key = $key[0]; |
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|
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// Load field. |
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$field = acf_get_field( $key ); |
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if ( ! $field ) { |
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continue; |
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} |
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|
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// get field |
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$field_title = $field['label'] . ' (' . $name . ')'; |
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$field_order = $field['menu_order']; |
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$ancestors = acf_get_field_ancestors( $field ); |
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|
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// ancestors |
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if ( ! empty( $ancestors ) ) { |
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|
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// vars |
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$count = count( $ancestors ); |
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$oldest = acf_get_field( $ancestors[ $count - 1 ] ); |
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|
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// update vars |
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$field_title = str_repeat( '- ', $count ) . $field_title; |
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$field_order = $oldest['menu_order'] . '.1'; |
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|
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} |
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|
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// append |
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$append[ $name ] = $field_title; |
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$order[ $name ] = $field_order; |
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|
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// hook into specific revision field filter and return local value |
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add_filter( "_wp_post_revision_field_{$name}", array( $this, 'wp_post_revision_field' ), 10, 4 ); |
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|
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} |
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|
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// append |
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if ( ! empty( $append ) ) { |
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|
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// vars |
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$prefix = '_'; |
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|
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// add prefix |
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$append = acf_add_array_key_prefix( $append, $prefix ); |
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$order = acf_add_array_key_prefix( $order, $prefix ); |
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|
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// sort by name (orders sub field values correctly) |
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array_multisort( $order, $append ); |
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|
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// remove prefix |
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$append = acf_remove_array_key_prefix( $append, $prefix ); |
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|
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// append |
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$fields = $fields + $append; |
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|
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} |
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|
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// return |
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return $fields; |
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|
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} |
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|
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|
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/* |
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* wp_post_revision_field |
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* |
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* This filter will load the value for the given field and return it for rendering |
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* |
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* @type filter |
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* @date 11/08/13 |
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* |
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* @param $value (mixed) should be false as it has not yet been loaded |
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* @param $field_name (string) The name of the field |
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* @param $post (mixed) Holds the $post object to load from - in WP 3.5, this is not passed! |
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* @param $direction (string) to / from - not used |
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* @return $value (string) |
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*/ |
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|
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function wp_post_revision_field( $value, $field_name, $post = null, $direction = false ) { |
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|
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// bail ealry if is empty |
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if ( empty( $value ) ) { |
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return $value; |
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} |
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|
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// value has not yet been 'maybe_unserialize' |
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$value = maybe_unserialize( $value ); |
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|
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// vars |
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$post_id = $post->ID; |
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|
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// load field |
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$field = acf_maybe_get_field( $field_name, $post_id ); |
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|
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// default formatting |
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if ( is_array( $value ) ) { |
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|
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$value = implode( ', ', $value ); |
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|
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} elseif ( is_object( $value ) ) { |
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|
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$value = serialize( $value ); |
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|
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} |
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|
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// image |
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if ( $field['type'] == 'image' || $field['type'] == 'file' ) { |
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|
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$url = wp_get_attachment_url( $value ); |
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$value = $value . ' (' . $url . ')'; |
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|
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} |
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|
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// return |
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return $value; |
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|
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} |
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|
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|
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/* |
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* wp_restore_post_revision |
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* |
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* This action will copy and paste the metadata from a revision to the post |
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* |
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* @type action |
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* @date 11/08/13 |
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* |
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* @param $parent_id (int) the destination post |
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* @return $revision_id (int) the source post |
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*/ |
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|
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function wp_restore_post_revision( $post_id, $revision_id ) { |
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|
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// copy postmeta from revision to post (restore from revision) |
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acf_copy_postmeta( $revision_id, $post_id ); |
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|
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// Make sure the latest revision is also updated to match the new $post data |
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// get latest revision |
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$revision = acf_get_post_latest_revision( $post_id ); |
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|
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// save |
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if ( $revision ) { |
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|
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// copy postmeta from revision to latest revision (potentialy may be the same, but most likely are different) |
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acf_copy_postmeta( $revision_id, $revision->ID ); |
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|
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} |
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|
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} |
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|
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|
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/* |
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* acf_validate_post_id |
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* |
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* This function will modify the $post_id and allow loading values from a revision |
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* |
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* @type function |
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* @date 6/3/17 |
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* @since 5.5.10 |
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* |
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* @param $post_id (int) |
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* @param $_post_id (int) |
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* @return $post_id (int) |
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*/ |
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|
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function acf_validate_post_id( $post_id, $_post_id ) { |
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|
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// bail early if no preview in URL |
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if ( ! isset( $_GET['preview'] ) ) { |
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return $post_id; |
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} |
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|
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// bail early if $post_id is not numeric |
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if ( ! is_numeric( $post_id ) ) { |
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return $post_id; |
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} |
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|
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// vars |
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$k = $post_id; |
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$preview_id = 0; |
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|
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// check cache |
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if ( isset( $this->cache[ $k ] ) ) { |
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return $this->cache[ $k ]; |
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} |
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|
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// validate |
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if ( isset( $_GET['preview_id'] ) ) { |
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|
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$preview_id = (int) $_GET['preview_id']; |
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|
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} elseif ( isset( $_GET['p'] ) ) { |
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|
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$preview_id = (int) $_GET['p']; |
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|
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} elseif ( isset( $_GET['page_id'] ) ) { |
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|
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$preview_id = (int) $_GET['page_id']; |
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|
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} |
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|
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// bail early id $preview_id does not match $post_id |
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if ( $preview_id != $post_id ) { |
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return $post_id; |
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} |
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|
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// attempt find revision |
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$revision = acf_get_post_latest_revision( $post_id ); |
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|
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// save |
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if ( $revision && $revision->post_parent == $post_id ) { |
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|
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$post_id = (int) $revision->ID; |
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|
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} |
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|
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// set cache |
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$this->cache[ $k ] = $post_id; |
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|
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// return |
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return $post_id; |
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|
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} |
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|
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} |
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|
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// initialize |
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acf()->revisions = new acf_revisions(); |
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|
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endif; // class_exists check |
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|
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|
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/* |
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* acf_save_post_revision |
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* |
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* This function will copy meta from a post to it's latest revision |
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* |
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* @type function |
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* @date 26/09/2016 |
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* @since 5.4.0 |
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* |
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* @param $post_id (int) |
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* @return n/a |
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*/ |
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|
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function acf_save_post_revision( $post_id = 0 ) { |
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|
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// get latest revision |
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$revision = acf_get_post_latest_revision( $post_id ); |
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|
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// save |
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if ( $revision ) { |
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|
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acf_copy_postmeta( $post_id, $revision->ID ); |
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|
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} |
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|
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} |
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|
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|
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/* |
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* acf_get_post_latest_revision |
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* |
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* This function will return the latest revision for a given post |
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* |
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* @type function |
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* @date 25/06/2016 |
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* @since 5.3.8 |
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* |
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* @param $post_id (int) |
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* @return $post_id (int) |
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*/ |
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|
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function acf_get_post_latest_revision( $post_id ) { |
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|
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// vars |
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$revisions = wp_get_post_revisions( $post_id ); |
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|
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// shift off and return first revision (will return null if no revisions) |
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$revision = array_shift( $revisions ); |
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|
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// return |
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return $revision; |
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|
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} |
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|
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|
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|
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|
