Inline documentation for hooks in wp-includes/revision.php.
Props adamsilverstein, DrewAPicture. Fixes #26979. Built from https://develop.svn.wordpress.org/trunk@27699 git-svn-id: http://core.svn.wordpress.org/trunk@27538 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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Drew Jaynes
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@ -16,8 +16,6 @@
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* @since 2.6.0
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* @access private
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*
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* @uses apply_filters() Calls '_wp_post_revision_fields' on 'title', 'content' and 'excerpt' fields.
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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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@ -33,7 +31,20 @@ function _wp_post_revision_fields( $post = null, $autosave = false ) {
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'post_excerpt' => __( 'Excerpt' ),
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);
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// Runs only once
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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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@ -99,7 +110,21 @@ function wp_save_post_revision( $post_id ) {
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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', true, $last_revision, $post ) ) {
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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 int $last_revision ID of the last revision.
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* @param int $post Post ID.
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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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@ -237,8 +262,16 @@ function _wp_put_post_revision( $post = null, $autosave = false ) {
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if ( is_wp_error($revision_id) )
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return $revision_id;
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if ( $revision_id )
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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 $revision_id;
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}
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@ -283,8 +316,6 @@ function wp_get_post_revision(&$post, $output = OBJECT, $filter = 'raw') {
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*
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* @uses wp_get_post_revision()
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* @uses wp_update_post()
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* @uses do_action() Calls 'wp_restore_post_revision' on post ID and revision ID if wp_update_post()
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* is successful.
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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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@ -324,6 +355,14 @@ function wp_restore_post_revision( $revision_id, $fields = null ) {
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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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/**
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* Fires after a post revision has been restored.
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*
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* @since 2.6.0
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*
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* @param int $post_id Post ID.
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* @param int $revision_id Post revision ID.
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*/
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do_action( 'wp_restore_post_revision', $post_id, $revision['ID'] );
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return $post_id;
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@ -350,8 +389,17 @@ function wp_delete_post_revision( $revision_id ) {
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if ( is_wp_error( $delete ) )
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return $delete;
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if ( $delete )
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if ( $delete ) {
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/**
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* Fires once a post revision has been deleted.
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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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* @param object|array $revision Post revision object or array.
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*/
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do_action( 'wp_delete_post_revision', $revision->ID, $revision );
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}
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return $delete;
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}
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@ -406,7 +454,6 @@ function wp_revisions_enabled( $post ) {
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* @since 3.6.0
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*
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* @uses post_type_supports()
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* @uses apply_filters() Calls 'wp_revisions_to_keep' hook on the number of revisions.
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*
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* @param object $post The post object.
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* @return int The number of revisions to keep.
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@ -422,6 +469,16 @@ function wp_revisions_to_keep( $post ) {
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if ( ! post_type_supports( $post->post_type, 'revisions' ) )
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$num = 0;
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/**
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* Filter the number of revisions to save for the given post.
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*
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* Overrides the value of WP_POST_REVISIONS.
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*
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* @since 3.6.0
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*
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* @param int $num Number of revisions to store.
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* @param WP_Post $post Post object.
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*/
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return (int) apply_filters( 'wp_revisions_to_keep', $num, $post );
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}
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