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REST API: Add endpoints for blocks. 

`WP_REST_Block_Renderer_Controller` allows rendering of server-side rendered blocks, whilst `WP_REST_Blocks_Controller` allows retrieving of reusable blocks.

Props desrosj, danielbachhuber, pento.
See #45065.


Built from https://develop.svn.wordpress.org/branches/5.0@43805


git-svn-id: http://core.svn.wordpress.org/branches/5.0@43634 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Gary Pendergast 2018-10-23 07:04:39 +00:00
parent c60c870ab8
commit b1f64a77d8
6 changed files with 227 additions and 1 deletions
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3
wp-includes/post.php
View File

@ -238,6 +238,9 @@ function create_initial_post_types() {
'show_ui' => true,
'show_in_menu' => false,
'rewrite' => false,
'show_in_rest' => true,
'rest_base' => 'blocks',
'rest_controller_class' => 'WP_REST_Blocks_Controller',
'capability_type' => 'block',
'capabilities' => array(
// You need to be able to edit posts, in order to read blocks in their raw form.

5
wp-includes/rest-api.php
View File

@ -250,6 +250,10 @@ function create_initial_rest_routes() {
$controller = new WP_REST_Search_Controller( $search_handlers );
$controller->register_routes();
// Block Renderer.
$controller = new WP_REST_Block_Renderer_Controller;
$controller->register_routes();
// Settings.
$controller = new WP_REST_Settings_Controller;
$controller->register_routes();
@ -257,6 +261,7 @@ function create_initial_rest_routes() {
// Themes.
$controller = new WP_REST_Themes_Controller;
$controller->register_routes();
}
/**

177
wp-includes/rest-api/endpoints/class-wp-rest-block-renderer-controller.php Normal file
View File

@ -0,0 +1,177 @@
<?php
/**
* Block Renderer REST API: WP_REST_Block_Renderer_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 5.0.0
*/
/**
* Controller which provides REST endpoint for rendering a block.
*
* @since 5.0.0
*
* @see WP_REST_Controller
*/
class WP_REST_Block_Renderer_Controller extends WP_REST_Controller {
/**
* Constructs the controller.
*
* @since 5.0.0
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'block-renderer';
}
/**
* Registers the necessary REST API routes, one for each dynamic block.
*
* @since 5.0.0
*/
public function register_routes() {
$block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
foreach ( $block_types as $block_type ) {
if ( ! $block_type->is_dynamic() ) {
continue;
}
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/(?P<name>' . $block_type->name . ')',
array(
'args' => array(
'name' => array(
'description' => __( 'Unique registered name for the block.' ),
'type' => 'string',
),
),
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' ) ),
'attributes' => array(
/* translators: %s is the name of the block */
'description' => sprintf( __( 'Attributes for %s block' ), $block_type->name ),
'type' => 'object',
'additionalProperties' => false,
'properties' => $block_type->get_attributes(),
),
'post_id' => array(
'description' => __( 'ID of the post context.' ),
'type' => 'integer',
),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
}
/**
* Checks if a given request has access to read blocks.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function get_item_permissions_check( $request ) {
global $post;
$post_id = isset( $request['post_id'] ) ? intval( $request['post_id'] ) : 0;
if ( 0 < $post_id ) {
$post = get_post( $post_id );
if ( ! $post || ! current_user_can( 'edit_post', $post->ID ) ) {
return new WP_Error(
'block_cannot_read',
__( 'Sorry, you are not allowed to read blocks of this post' ),
array(
'status' => rest_authorization_required_code(),
)
);
}
} else {
if ( ! current_user_can( 'edit_posts' ) ) {
return new WP_Error(
'block_cannot_read',
__( 'Sorry, you are not allowed to read blocks as this user.' ),
array(
'status' => rest_authorization_required_code(),
)
);
}
}
return true;
}
/**
* Returns block output from block's registered render_callback.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_item( $request ) {
global $post;
$post_id = isset( $request['post_id'] ) ? intval( $request['post_id'] ) : 0;
if ( 0 < $post_id ) {
$post = get_post( $post_id );
// Set up postdata since this will be needed if post_id was set.
setup_postdata( $post );
}
$registry = WP_Block_Type_Registry::get_instance();
$block = $registry->get_registered( $request['name'] );
if ( null === $block ) {
return new WP_Error(
'block_invalid',
__( 'Invalid block.' ),
array(
'status' => 404,
)
);
}
$data = array(
'rendered' => $block->render( $request->get_param( 'attributes' ) ),
);
return rest_ensure_response( $data );
}
/**
* Retrieves block's output schema, conforming to JSON Schema.
*
* @since 5.0.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
return array(
'$schema' => 'http://json-schema.org/schema#',
'title' => 'rendered-block',
'type' => 'object',
'properties' => array(
'rendered' => array(
'description' => __( 'The rendered block.' ),
'type' => 'string',
'required' => true,
'context' => array( 'edit' ),
),
),
);
}
}

39
wp-includes/rest-api/endpoints/class-wp-rest-blocks-controller.php Normal file
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@ -0,0 +1,39 @@
<?php
/**
* Reusable blocks REST API: WP_REST_Blocks_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 5.0.0
*/
/**
* Controller which provides a REST endpoint for the editor to read, create,
* edit and delete reusable blocks. Blocks are stored as posts with the wp_block
* post type.
*
* @since 5.0.0
*
* @see WP_REST_Posts_Controller
* @see WP_REST_Controller
*/
class WP_REST_Blocks_Controller extends WP_REST_Posts_Controller {
/**
* Checks if a block can be read.
*
* @since 5.0.0
*
* @param object $post Post object that backs the block.
* @return bool Whether the block can be read.
*/
public function check_read_permission( $post ) {
// Ensure that the user is logged in and has the read_blocks capability.
$post_type = get_post_type_object( $post->post_type );
if ( ! current_user_can( $post_type->cap->read_post, $post->ID ) ) {
return false;
}
return parent::check_read_permission( $post );
}
}

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.0-alpha-43804';
$wp_version = '5.0-alpha-43805';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

2
wp-settings.php
View File

@ -235,6 +235,8 @@ require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-terms-controller.p
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-users-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-comments-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-search-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-blocks-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-block-renderer-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-settings-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-themes-controller.php' );
require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-meta-fields.php' );