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<?php |
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/** |
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* Post revision functions. |
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* |
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* @package WordPress |
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* @subpackage Post_Revisions |
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*/ |
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/** |
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* Determines which fields of posts are to be saved in revisions. |
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* |
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* Does two things. If passed a post *array*, it will return a post array ready |
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* to be inserted into the posts table as a post revision. Otherwise, returns |
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* an array whose keys are the post fields to be saved for post revisions. |
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* |
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* @since 2.6.0 |
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* @access private |
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* |
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* @param array $post Optional a post array to be processed for insertion as a post revision. |
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* @param bool $autosave optional Is the revision an autosave? |
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* @return array Post array ready to be inserted as a post revision or array of fields that can be versioned. |
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*/ |
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function _wp_post_revision_fields( $post = null, $autosave = false ) { |
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static $fields = false; |
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if ( !$fields ) { |
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// Allow these to be versioned |
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$fields = array( |
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'post_title' => __( 'Title' ), |
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'post_content' => __( 'Content' ), |
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'post_excerpt' => __( 'Excerpt' ), |
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); |
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/** |
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* Filter the list of fields saved in post revisions. |
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* |
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* Included by default: 'post_title', 'post_content' and 'post_excerpt'. |
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* |
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* Disallowed fields: 'ID', 'post_name', 'post_parent', 'post_date', |
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* 'post_date_gmt', 'post_status', 'post_type', 'comment_count', |
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* and 'post_author'. |
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* |
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* @since 2.6.0 |
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* |
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* @param array $fields List of fields to revision. Contains 'post_title', |
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* 'post_content', and 'post_excerpt' by default. |
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*/ |
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$fields = apply_filters( '_wp_post_revision_fields', $fields ); |
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// WP uses these internally either in versioning or elsewhere - they cannot be versioned |
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foreach ( array( 'ID', 'post_name', 'post_parent', 'post_date', 'post_date_gmt', 'post_status', 'post_type', 'comment_count', 'post_author' ) as $protect ) |
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unset( $fields[$protect] ); |
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} |
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if ( !is_array($post) ) |
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return $fields; |
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$return = array(); |
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foreach ( array_intersect( array_keys( $post ), array_keys( $fields ) ) as $field ) |
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$return[$field] = $post[$field]; |
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$return['post_parent'] = $post['ID']; |
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$return['post_status'] = 'inherit'; |
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$return['post_type'] = 'revision'; |
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$return['post_name'] = $autosave ? "$post[ID]-autosave-v1" : "$post[ID]-revision-v1"; // "1" is the revisioning system version |
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$return['post_date'] = isset($post['post_modified']) ? $post['post_modified'] : ''; |
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$return['post_date_gmt'] = isset($post['post_modified_gmt']) ? $post['post_modified_gmt'] : ''; |
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return $return; |
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} |
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/** |
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* Creates a revision for the current version of a post. |
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* |
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* Typically used immediately after a post update, as every update is a revision, |
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* and the most recent revision always matches the current post. |
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* |
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* @since 2.6.0 |
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* |
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* @param int $post_id The ID of the post to save as a revision. |
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* @return null|int Null or 0 if error, new revision ID, if success. |
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*/ |
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function wp_save_post_revision( $post_id ) { |
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if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) |
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return; |
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if ( ! $post = get_post( $post_id ) ) |
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return; |
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if ( ! post_type_supports( $post->post_type, 'revisions' ) ) |
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return; |
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if ( 'auto-draft' == $post->post_status ) |
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return; |
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if ( ! wp_revisions_enabled( $post ) ) |
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return; |
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// Compare the proposed update with the last stored revision verifying that |
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// they are different, unless a plugin tells us to always save regardless. |
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// If no previous revisions, save one |
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if ( $revisions = wp_get_post_revisions( $post_id ) ) { |
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// grab the last revision, but not an autosave |
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foreach ( $revisions as $revision ) { |
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if ( false !== strpos( $revision->post_name, "{$revision->post_parent}-revision" ) ) { |
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$last_revision = $revision; |
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break; |
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} |
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} |
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/** |
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* Filter whether the post has changed since the last revision. |
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* |
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* By default a revision is saved only if one of the revisioned fields has changed. |
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* This filter can override that so a revision is saved even if nothing has changed. |
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* |
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* @since 3.6.0 |
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* |
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* @param bool $check_for_changes Whether to check for changes before saving a new revision. |
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* Default true. |
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* @param WP_Post $last_revision The the last revision post object. |
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* @param WP_Post $post The post object. |
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* |
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*/ |
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if ( isset( $last_revision ) && apply_filters( 'wp_save_post_revision_check_for_changes', $check_for_changes = true, $last_revision, $post ) ) { |
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$post_has_changed = false; |
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foreach ( array_keys( _wp_post_revision_fields() ) as $field ) { |
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if ( normalize_whitespace( $post->$field ) != normalize_whitespace( $last_revision->$field ) ) { |
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$post_has_changed = true; |
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break; |
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} |
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} |
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/** |
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* Filter whether a post has changed. |
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* |
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* By default a revision is saved only if one of the revisioned fields has changed. |
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* This filter allows for additional checks to determine if there were changes. |
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* |
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* @since 4.1.0 |
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* |
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* @param bool $post_has_changed Whether the post has changed. |
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* @param WP_Post $last_revision The last revision post object. |
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* @param WP_Post $post The post object. |
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* |
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*/ |
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$post_has_changed = (bool) apply_filters( 'wp_save_post_revision_post_has_changed', $post_has_changed, $last_revision, $post ); |
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//don't save revision if post unchanged |
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if( ! $post_has_changed ) { |
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return; |
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} |
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} |
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} |
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$return = _wp_put_post_revision( $post ); |
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// If a limit for the number of revisions to keep has been set, |
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// delete the oldest ones. |
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$revisions_to_keep = wp_revisions_to_keep( $post ); |
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if ( $revisions_to_keep < 0 ) |
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return $return; |
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$revisions = wp_get_post_revisions( $post_id, array( 'order' => 'ASC' ) ); |
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$delete = count($revisions) - $revisions_to_keep; |
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if ( $delete < 1 ) |
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return $return; |
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$revisions = array_slice( $revisions, 0, $delete ); |
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for ( $i = 0; isset( $revisions[$i] ); $i++ ) { |
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if ( false !== strpos( $revisions[ $i ]->post_name, 'autosave' ) ) |
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continue; |
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wp_delete_post_revision( $revisions[ $i ]->ID ); |
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} |
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return $return; |
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} |
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/** |
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* Retrieve the autosaved data of the specified post. |
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* |
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* Returns a post object containing the information that was autosaved for the |
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* specified post. If the optional $user_id is passed, returns the autosave for that user |
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* otherwise returns the latest autosave. |
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* |
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* @since 2.6.0 |
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* |
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* @param int $post_id The post ID. |
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* @param int $user_id optional The post author ID. |
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* @return object|bool The autosaved data or false on failure or when no autosave exists. |
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*/ |
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function wp_get_post_autosave( $post_id, $user_id = 0 ) { |
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$revisions = wp_get_post_revisions( $post_id, array( 'check_enabled' => false ) ); |
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foreach ( $revisions as $revision ) { |
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if ( false !== strpos( $revision->post_name, "{$post_id}-autosave" ) ) { |
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if ( $user_id && $user_id != $revision->post_author ) |
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continue; |
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return $revision; |
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} |
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} |
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return false; |
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} |
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/** |
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* Determines if the specified post is a revision. |
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* |
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* @since 2.6.0 |
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* |
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* @param int|object $post Post ID or post object. |
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* @return bool|int False if not a revision, ID of revision's parent otherwise. |
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*/ |
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function wp_is_post_revision( $post ) { |
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if ( !$post = wp_get_post_revision( $post ) ) |
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return false; |
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return (int) $post->post_parent; |
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} |
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/** |
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* Determines if the specified post is an autosave. |
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* |
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* @since 2.6.0 |
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* |
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* @param int|object $post Post ID or post object. |
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* @return bool|int False if not a revision, ID of autosave's parent otherwise |
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*/ |
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function wp_is_post_autosave( $post ) { |
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if ( !$post = wp_get_post_revision( $post ) ) |
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return false; |
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if ( false !== strpos( $post->post_name, "{$post->post_parent}-autosave" ) ) |
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return (int) $post->post_parent; |
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return false; |
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} |
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/** |
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* Inserts post data into the posts table as a post revision. |
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* |
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* @since 2.6.0 |
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* @access private |
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* |
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* @param int|object|array $post Post ID, post object OR post array. |
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* @param bool $autosave Optional. Is the revision an autosave? |
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* @return mixed WP_Error or 0 if error, new revision ID if success. |
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*/ |
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function _wp_put_post_revision( $post = null, $autosave = false ) { |
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if ( is_object($post) ) |
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$post = get_object_vars( $post ); |
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elseif ( !is_array($post) ) |
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$post = get_post($post, ARRAY_A); |
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if ( ! $post || empty($post['ID']) ) |
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return new WP_Error( 'invalid_post', __( 'Invalid post ID' ) ); |
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if ( isset($post['post_type']) && 'revision' == $post['post_type'] ) |
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return new WP_Error( 'post_type', __( 'Cannot create a revision of a revision' ) ); |
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$post = _wp_post_revision_fields( $post, $autosave ); |
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$post = wp_slash($post); //since data is from db |
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$revision_id = wp_insert_post( $post ); |
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if ( is_wp_error($revision_id) ) |
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return $revision_id; |
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if ( $revision_id ) { |
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/** |
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* Fires once a revision has been saved. |
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* |
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* @since 2.6.0 |
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* |
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* @param int $revision_id Post revision ID. |
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*/ |
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do_action( '_wp_put_post_revision', $revision_id ); |
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} |
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return $revision_id; |
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} |
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/** |
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* Gets a post revision. |
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* |
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* @since 2.6.0 |
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* |
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* @param int|object $post The post ID or object. |
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* @param string $output Optional. OBJECT, ARRAY_A, or ARRAY_N. |
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* @param string $filter Optional sanitation filter. @see sanitize_post(). |
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* @return mixed Null if error or post object if success. |
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*/ |
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function wp_get_post_revision(&$post, $output = OBJECT, $filter = 'raw') { |
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if ( !$revision = get_post( $post, OBJECT, $filter ) ) |
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return $revision; |
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if ( 'revision' !== $revision->post_type ) |
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return null; |
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if ( $output == OBJECT ) { |
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return $revision; |
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} elseif ( $output == ARRAY_A ) { |
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$_revision = get_object_vars($revision); |
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return $_revision; |
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} elseif ( $output == ARRAY_N ) { |
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$_revision = array_values(get_object_vars($revision)); |
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return $_revision; |
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} |
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return $revision; |
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} |
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/** |
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* Restores a post to the specified revision. |
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* |
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* Can restore a past revision using all fields of the post revision, or only selected fields. |
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* |
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* @since 2.6.0 |
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* |
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* @param int|object $revision_id Revision ID or revision object. |
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* @param array $fields Optional. What fields to restore from. Defaults to all. |
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* @return mixed Null if error, false if no fields to restore, (int) post ID if success. |
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*/ |
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function wp_restore_post_revision( $revision_id, $fields = null ) { |
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if ( !$revision = wp_get_post_revision( $revision_id, ARRAY_A ) ) |
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return $revision; |
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if ( !is_array( $fields ) ) |
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$fields = array_keys( _wp_post_revision_fields() ); |
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$update = array(); |
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foreach( array_intersect( array_keys( $revision ), $fields ) as $field ) { |
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$update[$field] = $revision[$field]; |
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} |
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if ( !$update ) |
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return false; |
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$update['ID'] = $revision['post_parent']; |
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$update = wp_slash( $update ); //since data is from db |
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$post_id = wp_update_post( $update ); |
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if ( ! $post_id || is_wp_error( $post_id ) ) |
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return $post_id; |
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// Add restore from details |
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$restore_details = array( |
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'restored_revision_id' => $revision_id, |
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'restored_by_user' => get_current_user_id(), |
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'restored_time' => time() |
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); |
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update_post_meta( $post_id, '_post_restored_from', $restore_details ); |
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// Update last edit user |
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update_post_meta( $post_id, '_edit_last', get_current_user_id() ); |
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5
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/** |
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364 |
* Fires after a post revision has been restored. |
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365 |
* |
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366 |
* @since 2.6.0 |
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367 |
* |
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368 |
* @param int $post_id Post ID. |
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369 |
* @param int $revision_id Post revision ID. |
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370 |
*/ |
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0
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371 |
do_action( 'wp_restore_post_revision', $post_id, $revision['ID'] ); |
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|
372 |
|
|
|
373 |
return $post_id; |
|
|
374 |
} |
|
|
375 |
|
|
|
376 |
/** |
|
|
377 |
* Deletes a revision. |
|
|
378 |
* |
|
|
379 |
* Deletes the row from the posts table corresponding to the specified revision. |
|
|
380 |
* |
|
|
381 |
* @since 2.6.0 |
|
|
382 |
* |
|
|
383 |
* @param int|object $revision_id Revision ID or revision object. |
|
|
384 |
* @return mixed Null or WP_Error if error, deleted post if success. |
|
|
385 |
*/ |
|
|
386 |
function wp_delete_post_revision( $revision_id ) { |
|
|
387 |
if ( !$revision = wp_get_post_revision( $revision_id ) ) |
|
|
388 |
return $revision; |
|
|
389 |
|
|
|
390 |
$delete = wp_delete_post( $revision->ID ); |
|
|
391 |
if ( is_wp_error( $delete ) ) |
|
|
392 |
return $delete; |
|
|
393 |
|
|
5
|
394 |
if ( $delete ) { |
|
|
395 |
/** |
|
|
396 |
* Fires once a post revision has been deleted. |
|
|
397 |
* |
|
|
398 |
* @since 2.6.0 |
|
|
399 |
* |
|
|
400 |
* @param int $revision_id Post revision ID. |
|
|
401 |
* @param object|array $revision Post revision object or array. |
|
|
402 |
*/ |
|
0
|
403 |
do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
|
5
|
404 |
} |
|
0
|
405 |
|
|
|
406 |
return $delete; |
|
|
407 |
} |
|
|
408 |
|
|
|
409 |
/** |
|
|
410 |
* Returns all revisions of specified post. |
|
|
411 |
* |
|
|
412 |
* @since 2.6.0 |
|
|
413 |
* |
|
5
|
414 |
* @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default is global $post. |
|
0
|
415 |
* @return array An array of revisions, or an empty array if none. |
|
|
416 |
*/ |
|
|
417 |
function wp_get_post_revisions( $post_id = 0, $args = null ) { |
|
|
418 |
$post = get_post( $post_id ); |
|
|
419 |
if ( ! $post || empty( $post->ID ) ) |
|
|
420 |
return array(); |
|
|
421 |
|
|
5
|
422 |
$defaults = array( 'order' => 'DESC', 'orderby' => 'date ID', 'check_enabled' => true ); |
|
0
|
423 |
$args = wp_parse_args( $args, $defaults ); |
|
|
424 |
|
|
|
425 |
if ( $args['check_enabled'] && ! wp_revisions_enabled( $post ) ) |
|
|
426 |
return array(); |
|
|
427 |
|
|
|
428 |
$args = array_merge( $args, array( 'post_parent' => $post->ID, 'post_type' => 'revision', 'post_status' => 'inherit' ) ); |
|
|
429 |
|
|
|
430 |
if ( ! $revisions = get_children( $args ) ) |
|
|
431 |
return array(); |
|
|
432 |
|
|
|
433 |
return $revisions; |
|
|
434 |
} |
|
|
435 |
|
|
|
436 |
/** |
|
|
437 |
* Determine if revisions are enabled for a given post. |
|
|
438 |
* |
|
|
439 |
* @since 3.6.0 |
|
|
440 |
* |
|
5
|
441 |
* @param WP_Post $post The post object. |
|
0
|
442 |
* @return bool True if number of revisions to keep isn't zero, false otherwise. |
|
|
443 |
*/ |
|
|
444 |
function wp_revisions_enabled( $post ) { |
|
|
445 |
return wp_revisions_to_keep( $post ) != 0; |
|
|
446 |
} |
|
|
447 |
|
|
|
448 |
/** |
|
|
449 |
* Determine how many revisions to retain for a given post. |
|
5
|
450 |
* |
|
|
451 |
* By default, an infinite number of revisions are kept. |
|
|
452 |
* |
|
|
453 |
* The constant WP_POST_REVISIONS can be set in wp-config to specify the limit |
|
|
454 |
* of revisions to keep. |
|
0
|
455 |
* |
|
|
456 |
* @since 3.6.0 |
|
|
457 |
* |
|
5
|
458 |
* @param WP_Post $post The post object. |
|
0
|
459 |
* @return int The number of revisions to keep. |
|
|
460 |
*/ |
|
|
461 |
function wp_revisions_to_keep( $post ) { |
|
|
462 |
$num = WP_POST_REVISIONS; |
|
|
463 |
|
|
|
464 |
if ( true === $num ) |
|
|
465 |
$num = -1; |
|
|
466 |
else |
|
|
467 |
$num = intval( $num ); |
|
|
468 |
|
|
|
469 |
if ( ! post_type_supports( $post->post_type, 'revisions' ) ) |
|
|
470 |
$num = 0; |
|
|
471 |
|
|
5
|
472 |
/** |
|
|
473 |
* Filter the number of revisions to save for the given post. |
|
|
474 |
* |
|
|
475 |
* Overrides the value of WP_POST_REVISIONS. |
|
|
476 |
* |
|
|
477 |
* @since 3.6.0 |
|
|
478 |
* |
|
|
479 |
* @param int $num Number of revisions to store. |
|
|
480 |
* @param WP_Post $post Post object. |
|
|
481 |
*/ |
|
0
|
482 |
return (int) apply_filters( 'wp_revisions_to_keep', $num, $post ); |
|
|
483 |
} |
|
|
484 |
|
|
|
485 |
/** |
|
|
486 |
* Sets up the post object for preview based on the post autosave. |
|
|
487 |
* |
|
|
488 |
* @since 2.7.0 |
|
|
489 |
* @access private |
|
|
490 |
*/ |
|
|
491 |
function _set_preview($post) { |
|
|
492 |
|
|
|
493 |
if ( ! is_object($post) ) |
|
|
494 |
return $post; |
|
|
495 |
|
|
|
496 |
$preview = wp_get_post_autosave($post->ID); |
|
|
497 |
|
|
|
498 |
if ( ! is_object($preview) ) |
|
|
499 |
return $post; |
|
|
500 |
|
|
|
501 |
$preview = sanitize_post($preview); |
|
|
502 |
|
|
|
503 |
$post->post_content = $preview->post_content; |
|
|
504 |
$post->post_title = $preview->post_title; |
|
|
505 |
$post->post_excerpt = $preview->post_excerpt; |
|
|
506 |
|
|
|
507 |
add_filter( 'get_the_terms', '_wp_preview_terms_filter', 10, 3 ); |
|
|
508 |
|
|
|
509 |
return $post; |
|
|
510 |
} |
|
|
511 |
|
|
|
512 |
/** |
|
|
513 |
* Filters the latest content for preview from the post autosave. |
|
|
514 |
* |
|
|
515 |
* @since 2.7.0 |
|
|
516 |
* @access private |
|
|
517 |
*/ |
|
|
518 |
function _show_post_preview() { |
|
|
519 |
|
|
|
520 |
if ( isset($_GET['preview_id']) && isset($_GET['preview_nonce']) ) { |
|
|
521 |
$id = (int) $_GET['preview_id']; |
|
|
522 |
|
|
|
523 |
if ( false == wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . $id ) ) |
|
|
524 |
wp_die( __('You do not have permission to preview drafts.') ); |
|
|
525 |
|
|
|
526 |
add_filter('the_preview', '_set_preview'); |
|
|
527 |
} |
|
|
528 |
} |
|
|
529 |
|
|
|
530 |
/** |
|
|
531 |
* Filters terms lookup to set the post format. |
|
|
532 |
* |
|
|
533 |
* @since 3.6.0 |
|
|
534 |
* @access private |
|
|
535 |
*/ |
|
|
536 |
function _wp_preview_terms_filter( $terms, $post_id, $taxonomy ) { |
|
|
537 |
if ( ! $post = get_post() ) |
|
|
538 |
return $terms; |
|
|
539 |
|
|
|
540 |
if ( empty( $_REQUEST['post_format'] ) || $post->ID != $post_id || 'post_format' != $taxonomy || 'revision' == $post->post_type ) |
|
|
541 |
return $terms; |
|
|
542 |
|
|
|
543 |
if ( 'standard' == $_REQUEST['post_format'] ) |
|
|
544 |
$terms = array(); |
|
|
545 |
elseif ( $term = get_term_by( 'slug', 'post-format-' . sanitize_key( $_REQUEST['post_format'] ), 'post_format' ) ) |
|
|
546 |
$terms = array( $term ); // Can only have one post format |
|
|
547 |
|
|
|
548 |
return $terms; |
|
|
549 |
} |
|
|
550 |
|
|
|
551 |
/** |
|
|
552 |
* Gets the post revision version. |
|
|
553 |
* |
|
|
554 |
* @since 3.6.0 |
|
|
555 |
* @access private |
|
|
556 |
*/ |
|
|
557 |
function _wp_get_post_revision_version( $revision ) { |
|
|
558 |
if ( is_object( $revision ) ) |
|
|
559 |
$revision = get_object_vars( $revision ); |
|
|
560 |
elseif ( !is_array( $revision ) ) |
|
|
561 |
return false; |
|
|
562 |
|
|
|
563 |
if ( preg_match( '/^\d+-(?:autosave|revision)-v(\d+)$/', $revision['post_name'], $matches ) ) |
|
|
564 |
return (int) $matches[1]; |
|
|
565 |
|
|
|
566 |
return 0; |
|
|
567 |
} |
|
|
568 |
|
|
|
569 |
/** |
|
|
570 |
* Upgrade the revisions author, add the current post as a revision and set the revisions version to 1 |
|
|
571 |
* |
|
|
572 |
* @since 3.6.0 |
|
|
573 |
* @access private |
|
|
574 |
* |
|
5
|
575 |
* @param WP_Post $post Post object |
|
0
|
576 |
* @param array $revisions Current revisions of the post |
|
|
577 |
* @return bool true if the revisions were upgraded, false if problems |
|
|
578 |
*/ |
|
|
579 |
function _wp_upgrade_revisions_of_post( $post, $revisions ) { |
|
|
580 |
global $wpdb; |
|
|
581 |
|
|
|
582 |
// Add post option exclusively |
|
|
583 |
$lock = "revision-upgrade-{$post->ID}"; |
|
|
584 |
$now = time(); |
|
|
585 |
$result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, 'no') /* LOCK */", $lock, $now ) ); |
|
|
586 |
if ( ! $result ) { |
|
|
587 |
// If we couldn't get a lock, see how old the previous lock is |
|
|
588 |
$locked = get_option( $lock ); |
|
|
589 |
if ( ! $locked ) { |
|
|
590 |
// Can't write to the lock, and can't read the lock. |
|
|
591 |
// Something broken has happened |
|
|
592 |
return false; |
|
|
593 |
} |
|
|
594 |
|
|
|
595 |
if ( $locked > $now - 3600 ) { |
|
|
596 |
// Lock is not too old: some other process may be upgrading this post. Bail. |
|
|
597 |
return false; |
|
|
598 |
} |
|
|
599 |
|
|
|
600 |
// Lock is too old - update it (below) and continue |
|
|
601 |
} |
|
|
602 |
|
|
|
603 |
// If we could get a lock, re-"add" the option to fire all the correct filters. |
|
|
604 |
update_option( $lock, $now ); |
|
|
605 |
|
|
|
606 |
reset( $revisions ); |
|
|
607 |
$add_last = true; |
|
|
608 |
|
|
|
609 |
do { |
|
|
610 |
$this_revision = current( $revisions ); |
|
|
611 |
$prev_revision = next( $revisions ); |
|
|
612 |
|
|
|
613 |
$this_revision_version = _wp_get_post_revision_version( $this_revision ); |
|
|
614 |
|
|
|
615 |
// Something terrible happened |
|
|
616 |
if ( false === $this_revision_version ) |
|
|
617 |
continue; |
|
|
618 |
|
|
|
619 |
// 1 is the latest revision version, so we're already up to date. |
|
|
620 |
// No need to add a copy of the post as latest revision. |
|
|
621 |
if ( 0 < $this_revision_version ) { |
|
|
622 |
$add_last = false; |
|
|
623 |
continue; |
|
|
624 |
} |
|
|
625 |
|
|
|
626 |
// Always update the revision version |
|
|
627 |
$update = array( |
|
|
628 |
'post_name' => preg_replace( '/^(\d+-(?:autosave|revision))[\d-]*$/', '$1-v1', $this_revision->post_name ), |
|
|
629 |
); |
|
|
630 |
|
|
|
631 |
// If this revision is the oldest revision of the post, i.e. no $prev_revision, |
|
|
632 |
// the correct post_author is probably $post->post_author, but that's only a good guess. |
|
|
633 |
// Update the revision version only and Leave the author as-is. |
|
|
634 |
if ( $prev_revision ) { |
|
|
635 |
$prev_revision_version = _wp_get_post_revision_version( $prev_revision ); |
|
|
636 |
|
|
|
637 |
// If the previous revision is already up to date, it no longer has the information we need :( |
|
|
638 |
if ( $prev_revision_version < 1 ) |
|
|
639 |
$update['post_author'] = $prev_revision->post_author; |
|
|
640 |
} |
|
|
641 |
|
|
|
642 |
// Upgrade this revision |
|
|
643 |
$result = $wpdb->update( $wpdb->posts, $update, array( 'ID' => $this_revision->ID ) ); |
|
|
644 |
|
|
|
645 |
if ( $result ) |
|
|
646 |
wp_cache_delete( $this_revision->ID, 'posts' ); |
|
|
647 |
|
|
|
648 |
} while ( $prev_revision ); |
|
|
649 |
|
|
|
650 |
delete_option( $lock ); |
|
|
651 |
|
|
|
652 |
// Add a copy of the post as latest revision. |
|
|
653 |
if ( $add_last ) |
|
|
654 |
wp_save_post_revision( $post->ID ); |
|
|
655 |
|
|
|
656 |
return true; |
|
|
657 |
} |