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@@ -9,22 +9,25 @@
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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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* @since 4.5.0 A `WP_Post` object can now be passed to the `$post` parameter.
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* @since 4.5.0 The optional `$autosave` parameter was deprecated and renamed to `$deprecated`.
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* @access private
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*
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* @staticvar array $fields
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*
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* @param array|null $post Optional. A post array to be processed for insertion as a post revision. Default null.
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* @param bool $autosave Optional. Is the revision an autosave? Default false.
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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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* @param array|WP_Post $post Optional. A post array or a WP_Post object being processed
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* for insertion as a post revision. Default empty array.
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* @param bool $deprecated Not used.
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* @return array 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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function _wp_post_revision_fields( $post = array(), $deprecated = false ) {
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static $fields = null;
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if ( ! is_array( $post ) ) {
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$post = get_post( $post, ARRAY_A );
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}
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if ( is_null( $fields ) ) {
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// Allow these to be versioned
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$fields = array(
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@@ -32,43 +35,67 @@ function _wp_post_revision_fields( $post = null, $autosave = false ) {
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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 $fields;
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/**
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* Filter the list of fields saved in post revisions.
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*
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* Included by default: 'post_title', 'post_content' and 'post_excerpt'.
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*
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* Disallowed fields: 'ID', 'post_name', 'post_parent', 'post_date',
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* 'post_date_gmt', 'post_status', 'post_type', 'comment_count',
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* and 'post_author'.
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*
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* @since 2.6.0
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* @since 4.5.0 The `$post` parameter was added.
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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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* @param array $post A post array being processed for insertion as a post revision.
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*/
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$fields = apply_filters( '_wp_post_revision_fields', $fields, $post );
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$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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// 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[ $protect ] );
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}
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$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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return $fields;
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}
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/**
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* Returns a post array ready to be inserted into the posts table as a post revision.
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*
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* @since 4.5.0
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* @access private
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*
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* @param array|WP_Post $post Optional. A post array or a WP_Post object to be processed
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* for insertion as a post revision. Default empty array.
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* @param bool $autosave Optional. Is the revision an autosave? Default false.
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* @return array Post array ready to be inserted as a post revision.
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*/
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function _wp_post_revision_data( $post = array(), $autosave = false ) {
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if ( ! is_array( $post ) ) {
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$post = get_post( $post, ARRAY_A );
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}
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$fields = _wp_post_revision_fields( $post );
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$revision_data = array();
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foreach ( array_intersect( array_keys( $post ), array_keys( $fields ) ) as $field ) {
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$revision_data[ $field ] = $post[ $field ];
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}
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$revision_data['post_parent'] = $post['ID'];
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$revision_data['post_status'] = 'inherit';
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$revision_data['post_type'] = 'revision';
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$revision_data['post_name'] = $autosave ? "$post[ID]-autosave-v1" : "$post[ID]-revision-v1"; // "1" is the revisioning system version
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$revision_data['post_date'] = isset( $post['post_modified'] ) ? $post['post_modified'] : '';
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$revision_data['post_date_gmt'] = isset( $post['post_modified_gmt'] ) ? $post['post_modified_gmt'] : '';
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return $revision_data;
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}
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/**
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@@ -127,7 +154,7 @@ function wp_save_post_revision( $post_id ) {
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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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foreach ( array_keys( _wp_post_revision_fields( $post ) ) 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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@@ -267,7 +294,7 @@ function _wp_put_post_revision( $post = null, $autosave = false ) {
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if ( isset($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_post_revision_data( $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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@@ -333,7 +360,7 @@ function wp_restore_post_revision( $revision_id, $fields = null ) {
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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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$fields = array_keys( _wp_post_revision_fields( $revision ) );
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$update = array();
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foreach ( array_intersect( array_keys( $revision ), $fields ) as $field ) {
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