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class-wp-rest-post-autosave-controller.php
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class-wp-rest-post-autosave-controller.php
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<?php // See https://github.com/WP-API/WP-API/blob/autosave/lib/endpoints/class-wp-rest-post-autosave-controller.php
class WP_REST_Post_Autosave_Controller extends WP_REST_Controller {
private $parent_post_type;
private $parent_controller;
private $parent_base;
public function __construct( $parent_post_type ) {
$this->parent_post_type = $parent_post_type;
$this->parent_controller = new WP_REST_Posts_Controller( $parent_post_type );
$this->namespace = 'wp/v2';
$this->rest_base = 'autosave';
$post_type_object = get_post_type_object( $parent_post_type );
$this->parent_base = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name;
}
/**
* Register routes for the autosave.
*/
public function register_routes() {
register_rest_route( $this->namespace, '/' . $this->parent_base . '/(?P<id>[\d]+)/' . $this->rest_base, array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => array( $this, 'get_item_permissions_check' ),
'args' => array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
),
),
array(
'methods' => WP_REST_Server::CREATABLE,
'callback' => array( $this, 'update_item' ),
'permission_callback' => array( $this, 'update_item_permissions_check' ),
),
'schema' => array( $this, 'get_public_item_schema' ),
));
}
/**
* Check if a given request has access to get the autosave.
*
* @param WP_REST_Request $request Full data about the request.
* @return WP_Error|boolean
*/
public function get_item_permissions_check( $request ) {
$parent = get_post( $request['id'] );
if ( ! $parent ) {
return true;
}
$parent_post_type_obj = get_post_type_object( $parent->post_type );
if ( ! current_user_can( $parent_post_type_obj->cap->edit_post, $parent->ID ) ) {
return new WP_Error( 'rest_cannot_read', __( 'Sorry, you cannot view autosaves of this post.' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Get the autosave for the post.
*
* @param WP_REST_Request $request Full data about the request.
* @return WP_Error|array
*/
public function get_item( $request ) {
$parent = get_post( $request['id'] );
if ( ! $parent || $this->parent_post_type !== $parent->post_type ) {
return new WP_Error( 'rest_post_invalid_id', __( 'Invalid post id.' ), array( 'status' => 404 ) );
}
// implement getting autosave
$autosave = wp_get_post_autosave( $parent->ID, get_current_user_id() );
if ( ! $autosave ) {
return new WP_Error( 'rest_not_found', __( 'No autosave exists for this post for the current user.' ), array( 'status' => 404 ) );
}
$response = $this->prepare_item_for_response( $autosave, $request );
return rest_ensure_response( $response );
}
public function update_item_permissions_check( $request ) {
$response = $this->get_item_permissions_check( $request );
if ( ! $response || is_wp_error( $response ) ) {
return $response;
}
return true;
}
/**
* Update an autosave for a post.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_Error|WP_REST_Response
*/
public function update_item( $request ) {
$parent = get_post( $request['id'] );
$autosave = wp_get_post_autosave( $parent->ID, get_current_user_id() );
$post_data = (array) $this->prepare_item_for_database( $request );
if ( ! $autosave ) {
$autosave_id = _wp_put_post_revision( $post_data, true );
} else {
$post_data['ID'] = $autosave->ID;
/**
* Fires before an autosave is stored.
*
* @since 4.1.0
*
* @param array $new_autosave Post array - the autosave that is about to be saved.
*/
do_action( 'wp_creating_autosave', $post_data );
wp_update_post( $post_data );
$autosave_id = $autosave->ID;
}
return $this->prepare_item_for_response( get_post( $autosave_id ), $request );
}
/**
* Prepare the autosave for the REST response
*
* @param WP_Post $post Post autosave object.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response $response
*/
public function prepare_item_for_response( $post, $request ) {
// Base fields for every post
$data = array(
'date' => $this->prepare_date_response( $post->post_date_gmt, $post->post_date ),
'date_gmt' => $this->prepare_date_response( $post->post_date_gmt ),
'modified' => $this->prepare_date_response( $post->post_modified_gmt, $post->post_modified ),
'modified_gmt' => $this->prepare_date_response( $post->post_modified_gmt ),
);
$schema = $this->get_item_schema();
if ( ! empty( $schema['properties']['title'] ) ) {
$data['title'] = $post->post_title;
}
if ( ! empty( $schema['properties']['content'] ) ) {
$data['content'] = $post->post_content;
}
if ( ! empty( $schema['properties']['excerpt'] ) ) {
$data['excerpt'] = $post->post_excerpt;
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
$response = rest_ensure_response( $data );
/**
* Filter an autosave returned from the API.
*
* Allows modification of the autosave right before it is returned.
*
* @param WP_REST_Response $response The response object.
* @param WP_Post $post The original autosave object.
* @param WP_REST_Request $request Request used to generate the response.
*/
return apply_filters( 'rest_prepare_autosave', $response, $post, $request );
}
/**
* Prepare a single post for create or update.
*
* @param WP_REST_Request $request Request object.
* @return WP_Error|object $prepared_post Post object.
*/
protected function prepare_item_for_database( $request ) {
$prepared_post = new stdClass;
if ( isset( $request['id'] ) ) {
$prepared_post->ID = absint( $request['id'] );
}
$schema = $this->get_item_schema();
// Post title.
if ( ! empty( $schema['properties']['title'] ) && isset( $request['title'] ) ) {
if ( is_string( $request['title'] ) ) {
$prepared_post->post_title = wp_filter_post_kses( $request['title'] );
} elseif ( ! empty( $request['title']['raw'] ) ) {
$prepared_post->post_title = wp_filter_post_kses( $request['title']['raw'] );
}
}
// Post content.
if ( ! empty( $schema['properties']['content'] ) && isset( $request['content'] ) ) {
if ( is_string( $request['content'] ) ) {
$prepared_post->post_content = wp_filter_post_kses( $request['content'] );
} elseif ( isset( $request['content']['raw'] ) ) {
$prepared_post->post_content = wp_filter_post_kses( $request['content']['raw'] );
}
}
// Post excerpt.
if ( ! empty( $schema['properties']['excerpt'] ) && isset( $request['excerpt'] ) ) {
if ( is_string( $request['excerpt'] ) ) {
$prepared_post->post_excerpt = wp_filter_post_kses( $request['excerpt'] );
} elseif ( isset( $request['excerpt']['raw'] ) ) {
$prepared_post->post_excerpt = wp_filter_post_kses( $request['excerpt']['raw'] );
}
}
// Post slug.
if ( ! empty( $schema['properties']['slug'] ) && isset( $request['slug'] ) ) {
$prepared_post->post_name = $request['slug'];
}
// Author
if ( ! empty( $schema['properties']['author'] ) && ! empty( $request['author'] ) ) {
$post_author = (int) $request['author'];
if ( get_current_user_id() !== $post_author ) {
$user_obj = get_userdata( $post_author );
if ( ! $user_obj ) {
return new WP_Error( 'rest_invalid_author', __( 'Invalid author id.' ), array( 'status' => 400 ) );
}
}
$prepared_post->post_author = $post_author;
}
// Post password.
if ( ! empty( $schema['properties']['password'] ) && isset( $request['password'] ) && '' !== $request['password'] ) {
$prepared_post->post_password = $request['password'];
if ( ! empty( $schema['properties']['sticky'] ) && ! empty( $request['sticky'] ) ) {
return new WP_Error( 'rest_invalid_field', __( 'A post can not be sticky and have a password.' ), array( 'status' => 400 ) );
}
if ( ! empty( $prepared_post->ID ) && is_sticky( $prepared_post->ID ) ) {
return new WP_Error( 'rest_invalid_field', __( 'A sticky post can not be password protected.' ), array( 'status' => 400 ) );
}
}
// Menu order.
if ( ! empty( $schema['properties']['menu_order'] ) && isset( $request['menu_order'] ) ) {
$prepared_post->menu_order = (int) $request['menu_order'];
}
// Comment status.
if ( ! empty( $schema['properties']['comment_status'] ) && ! empty( $request['comment_status'] ) ) {
$prepared_post->comment_status = $request['comment_status'];
}
// Ping status.
if ( ! empty( $schema['properties']['ping_status'] ) && ! empty( $request['ping_status'] ) ) {
$prepared_post->ping_status = $request['ping_status'];
}
/**
* Filter the query_vars used in `get_items` for the constructed query.
*
* The dynamic portion of the hook name, $this->post_type, refers to post_type of the post being
* prepared for insertion.
*
* @param object $prepared_post An object representing a single post prepared
* for inserting or updating the database.
* @param WP_REST_Request $request Request object.
*/
return apply_filters( "rest_pre_insert_{$this->parent_post_type}_autosave", $prepared_post, $request );
}
/**
* Check the post_date_gmt or modified_gmt and prepare any post or
* modified date for single post output.
*
* @param string $date_gmt
* @param string|null $date
* @return string|null ISO8601/RFC3339 formatted datetime.
*/
protected function prepare_date_response( $date_gmt, $date = null ) {
if ( '0000-00-00 00:00:00' === $date_gmt ) {
return null;
}
if ( isset( $date ) ) {
return mysql_to_rfc3339( $date );
}
return mysql_to_rfc3339( $date_gmt );
}
/**
* Get the autosave's schema, conforming to JSON Schema
*
* @return array
*/
public function get_item_schema() {
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => "{$this->parent_post_type}-autosave",
'type' => 'object',
/*
* Base properties for every Autosave
*/
'properties' => array(),
);
$fields = array(
'post_title' => __( 'Title' ),
'post_content' => __( 'Content' ),
'post_excerpt' => __( 'Excerpt' ),
);
/**
* Filter the list of fields saved in post revisions.
*
* Included by default: 'post_title', 'post_content' and 'post_excerpt'.
*
* Disallowed fields: 'ID', 'post_name', 'post_parent', 'post_date',
* 'post_date_gmt', 'post_status', 'post_type', 'comment_count',
* and 'post_author'.
*
* @since 2.6.0
*
* @param array $fields List of fields to revision. Contains 'post_title',
* 'post_content', and 'post_excerpt' by default.
*/
$fields = apply_filters( '_wp_post_revision_fields', $fields );
foreach ( $fields as $property => $name ) {
switch ( $property ) {
case 'post_title':
$schema['properties']['title'] = array(
'description' => __( 'Title for the object, as it exists in the database.' ),
'type' => 'string',
'context' => array( 'view' ),
);
break;
case 'post_content':
$schema['properties']['content'] = array(
'description' => __( 'Content for the object, as it exists in the database.' ),
'type' => 'string',
'context' => array( 'view' ),
);
break;
case 'post_excerpt':
$schema['properties']['excerpt'] = array(
'description' => __( 'Excerpt for the object, as it exists in the database.' ),
'type' => 'string',
'context' => array( 'view' ),
);
break;
}
}
return $this->add_additional_fields_schema( $schema );
}
/**
* Get the query params for collections
*
* @return array
*/
public function get_collection_params() {
return array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
);
}
}