namespace = 'wp/v2'; $this->rest_base = 'block-types'; $this->block_registry = WP_Block_Type_Registry::get_instance(); $this->style_registry = WP_Block_Styles_Registry::get_instance(); } /** * Registers the routes for block types. * * @since 5.5.0 * * @see register_rest_route() */ public function register_routes() { register_rest_route( $this->namespace, '/' . $this->rest_base, array( array( 'methods' => WP_REST_Server::READABLE, 'callback' => array( $this, 'get_items' ), 'permission_callback' => array( $this, 'get_items_permissions_check' ), 'args' => $this->get_collection_params(), ), 'schema' => array( $this, 'get_public_item_schema' ), ) ); register_rest_route( $this->namespace, '/' . $this->rest_base . '/(?P[a-zA-Z0-9_-]+)', array( array( 'methods' => WP_REST_Server::READABLE, 'callback' => array( $this, 'get_items' ), 'permission_callback' => array( $this, 'get_items_permissions_check' ), 'args' => $this->get_collection_params(), ), 'schema' => array( $this, 'get_public_item_schema' ), ) ); register_rest_route( $this->namespace, '/' . $this->rest_base . '/(?P[a-zA-Z0-9_-]+)/(?P[a-zA-Z0-9_-]+)', array( 'args' => array( 'name' => array( 'description' => __( 'Block name.' ), 'type' => 'string', ), 'namespace' => array( 'description' => __( 'Block namespace.' ), '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' ) ), ), ), 'schema' => array( $this, 'get_public_item_schema' ), ) ); } /** * Checks whether a given request has permission to read post block types. * * @since 5.5.0 * * @param WP_REST_Request $request Full details about the request. * @return true|WP_Error True if the request has read access, WP_Error object otherwise. */ public function get_items_permissions_check( $request ) { return $this->check_read_permission(); } /** * Retrieves all post block types, depending on user context. * * @since 5.5.0 * * @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_items( $request ) { $data = array(); $block_types = $this->block_registry->get_all_registered(); // Retrieve the list of registered collection query parameters. $registered = $this->get_collection_params(); $namespace = ''; if ( isset( $registered['namespace'] ) && ! empty( $request['namespace'] ) ) { $namespace = $request['namespace']; } foreach ( $block_types as $slug => $obj ) { if ( $namespace ) { list ( $block_namespace ) = explode( '/', $obj->name ); if ( $namespace !== $block_namespace ) { continue; } } $block_type = $this->prepare_item_for_response( $obj, $request ); $data[] = $this->prepare_response_for_collection( $block_type ); } return rest_ensure_response( $data ); } /** * Checks if a given request has access to read a block type. * * @since 5.5.0 * * @param WP_REST_Request $request Full details about the request. * @return true|WP_Error True if the request has read access for the item, WP_Error object otherwise. */ public function get_item_permissions_check( $request ) { $check = $this->check_read_permission(); if ( is_wp_error( $check ) ) { return $check; } $block_name = sprintf( '%s/%s', $request['namespace'], $request['name'] ); $block_type = $this->get_block( $block_name ); if ( is_wp_error( $block_type ) ) { return $block_type; } return true; } /** * Checks whether a given block type should be visible. * * @since 5.5.0 * * @return true|WP_Error True if the block type is visible, WP_Error otherwise. */ protected function check_read_permission() { if ( current_user_can( 'edit_posts' ) ) { return true; } foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) { if ( current_user_can( $post_type->cap->edit_posts ) ) { return true; } } return new WP_Error( 'rest_block_type_cannot_view', __( 'Sorry, you are not allowed to manage block types.' ), array( 'status' => rest_authorization_required_code() ) ); } /** * Get the block, if the name is valid. * * @since 5.5.0 * * @param string $name Block name. * @return WP_Block_Type|WP_Error Block type object if name is valid, WP_Error otherwise. */ protected function get_block( $name ) { $block_type = $this->block_registry->get_registered( $name ); if ( empty( $block_type ) ) { return new WP_Error( 'rest_block_type_invalid', __( 'Invalid block type.' ), array( 'status' => 404 ) ); } return $block_type; } /** * Retrieves a specific block type. * * @since 5.5.0 * * @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 ) { $block_name = sprintf( '%s/%s', $request['namespace'], $request['name'] ); $block_type = $this->get_block( $block_name ); if ( is_wp_error( $block_type ) ) { return $block_type; } $data = $this->prepare_item_for_response( $block_type, $request ); return rest_ensure_response( $data ); } /** * Prepares a block type object for serialization. * * @since 5.5.0 * * @param WP_Block_Type $block_type Block type data. * @param WP_REST_Request $request Full details about the request. * @return WP_REST_Response Block type data. */ public function prepare_item_for_response( $block_type, $request ) { $fields = $this->get_fields_for_response( $request ); $data = array(); if ( rest_is_field_included( 'attributes', $fields ) ) { $data['attributes'] = $block_type->get_attributes(); } if ( rest_is_field_included( 'is_dynamic', $fields ) ) { $data['is_dynamic'] = $block_type->is_dynamic(); } $schema = $this->get_item_schema(); $extra_fields = array( 'api_version', 'name', 'title', 'description', 'icon', 'category', 'keywords', 'parent', 'provides_context', 'uses_context', 'supports', 'styles', 'textdomain', 'example', 'editor_script', 'script', 'editor_style', 'style', 'variations', ); foreach ( $extra_fields as $extra_field ) { if ( rest_is_field_included( $extra_field, $fields ) ) { if ( isset( $block_type->$extra_field ) ) { $field = $block_type->$extra_field; } elseif ( array_key_exists( 'default', $schema['properties'][ $extra_field ] ) ) { $field = $schema['properties'][ $extra_field ]['default']; } else { $field = ''; } $data[ $extra_field ] = rest_sanitize_value_from_schema( $field, $schema['properties'][ $extra_field ] ); } } if ( rest_is_field_included( 'styles', $fields ) ) { $styles = $this->style_registry->get_registered_styles_for_block( $block_type->name ); $styles = array_values( $styles ); $data['styles'] = wp_parse_args( $styles, $data['styles'] ); $data['styles'] = array_filter( $data['styles'] ); } $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 ); $response->add_links( $this->prepare_links( $block_type ) ); /** * Filters a block type returned from the REST API. * * Allows modification of the block type data right before it is returned. * * @since 5.5.0 * * @param WP_REST_Response $response The response object. * @param WP_Block_Type $block_type The original block type object. * @param WP_REST_Request $request Request used to generate the response. */ return apply_filters( 'rest_prepare_block_type', $response, $block_type, $request ); } /** * Prepares links for the request. * * @since 5.5.0 * * @param WP_Block_Type $block_type Block type data. * @return array Links for the given block type. */ protected function prepare_links( $block_type ) { list( $namespace ) = explode( '/', $block_type->name ); $links = array( 'collection' => array( 'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ), ), 'self' => array( 'href' => rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $block_type->name ) ), ), 'up' => array( 'href' => rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $namespace ) ), ), ); if ( $block_type->is_dynamic() ) { $links['https://api.w.org/render-block'] = array( 'href' => add_query_arg( 'context', 'edit', rest_url( sprintf( '%s/%s/%s', 'wp/v2', 'block-renderer', $block_type->name ) ) ), ); } return $links; } /** * Retrieves the block type' schema, conforming to JSON Schema. * * @since 5.5.0 * * @return array Item schema data. */ public function get_item_schema() { if ( $this->schema ) { return $this->add_additional_fields_schema( $this->schema ); } // rest_validate_value_from_schema doesn't understand $refs, pull out reused definitions for readability. $inner_blocks_definition = array( 'description' => __( 'The list of inner blocks used in the example.' ), 'type' => 'array', 'items' => array( 'type' => 'object', 'properties' => array( 'name' => array( 'description' => __( 'The name of the inner block.' ), 'type' => 'string', ), 'attributes' => array( 'description' => __( 'The attributes of the inner block.' ), 'type' => 'object', ), 'innerBlocks' => array( 'description' => __( "A list of the inner block's own inner blocks. This is a recursive definition following the parent innerBlocks schema." ), 'type' => 'array', ), ), ), ); $example_definition = array( 'description' => __( 'Block example.' ), 'type' => array( 'object', 'null' ), 'default' => null, 'properties' => array( 'attributes' => array( 'description' => __( 'The attributes used in the example.' ), 'type' => 'object', ), 'innerBlocks' => $inner_blocks_definition, ), 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ); $keywords_definition = array( 'description' => __( 'Block keywords.' ), 'type' => 'array', 'items' => array( 'type' => 'string', ), 'default' => array(), 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ); $icon_definition = array( 'description' => __( 'Icon of block type.' ), 'type' => array( 'string', 'null' ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ); $category_definition = array( 'description' => __( 'Block category.' ), 'type' => array( 'string', 'null' ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ); $schema = array( '$schema' => 'http://json-schema.org/draft-04/schema#', 'title' => 'block-type', 'type' => 'object', 'properties' => array( 'api_version' => array( 'description' => __( 'Version of block API.' ), 'type' => 'integer', 'default' => 1, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'title' => array( 'description' => __( 'Title of block type.' ), 'type' => 'string', 'default' => '', 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'name' => array( 'description' => __( 'Unique name identifying the block type.' ), 'type' => 'string', 'default' => '', 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'description' => array( 'description' => __( 'Description of block type.' ), 'type' => 'string', 'default' => '', 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'icon' => $icon_definition, 'attributes' => array( 'description' => __( 'Block attributes.' ), 'type' => array( 'object', 'null' ), 'properties' => array(), 'default' => null, 'additionalProperties' => array( 'type' => 'object', ), 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'provides_context' => array( 'description' => __( 'Context provided by blocks of this type.' ), 'type' => 'object', 'properties' => array(), 'additionalProperties' => array( 'type' => 'string', ), 'default' => array(), 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'uses_context' => array( 'description' => __( 'Context values inherited by blocks of this type.' ), 'type' => 'array', 'default' => array(), 'items' => array( 'type' => 'string', ), 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'supports' => array( 'description' => __( 'Block supports.' ), 'type' => 'object', 'default' => array(), 'properties' => array(), 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'category' => $category_definition, 'is_dynamic' => array( 'description' => __( 'Is the block dynamically rendered.' ), 'type' => 'boolean', 'default' => false, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'editor_script' => array( 'description' => __( 'Editor script handle.' ), 'type' => array( 'string', 'null' ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'script' => array( 'description' => __( 'Public facing script handle.' ), 'type' => array( 'string', 'null' ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'editor_style' => array( 'description' => __( 'Editor style handle.' ), 'type' => array( 'string', 'null' ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'style' => array( 'description' => __( 'Public facing style handle.' ), 'type' => array( 'string', 'null' ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'styles' => array( 'description' => __( 'Block style variations.' ), 'type' => 'array', 'items' => array( 'type' => 'object', 'properties' => array( 'name' => array( 'description' => __( 'Unique name identifying the style.' ), 'type' => 'string', 'required' => true, ), 'label' => array( 'description' => __( 'The human-readable label for the style.' ), 'type' => 'string', ), 'inline_style' => array( 'description' => __( 'Inline CSS code that registers the CSS class required for the style.' ), 'type' => 'string', ), 'style_handle' => array( 'description' => __( 'Contains the handle that defines the block style.' ), 'type' => 'string', ), ), ), 'default' => array(), 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'variations' => array( 'description' => __( 'Block variations.' ), 'type' => 'array', 'items' => array( 'type' => 'object', 'properties' => array( 'name' => array( 'description' => __( 'The unique and machine-readable name.' ), 'type' => 'string', 'required' => true, ), 'title' => array( 'description' => __( 'A human-readable variation title.' ), 'type' => 'string', 'required' => true, ), 'description' => array( 'description' => __( 'A detailed variation description.' ), 'type' => 'string', 'required' => false, ), 'category' => $category_definition, 'icon' => $icon_definition, 'isDefault' => array( 'description' => __( 'Indicates whether the current variation is the default one.' ), 'type' => 'boolean', 'required' => false, 'default' => false, ), 'attributes' => array( 'description' => __( 'The initial values for attributes.' ), 'type' => 'object', ), 'innerBlocks' => $inner_blocks_definition, 'example' => $example_definition, 'scope' => array( 'description' => __( 'The list of scopes where the variation is applicable. When not provided, it assumes all available scopes.' ), 'type' => array( 'array', 'null' ), 'default' => null, 'items' => array( 'type' => 'string', 'enum' => array( 'block', 'inserter', 'transform' ), ), 'readonly' => true, ), 'keywords' => $keywords_definition, ), ), 'readonly' => true, 'context' => array( 'embed', 'view', 'edit' ), 'default' => null, ), 'textdomain' => array( 'description' => __( 'Public text domain.' ), 'type' => array( 'string', 'null' ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'parent' => array( 'description' => __( 'Parent blocks.' ), 'type' => array( 'array', 'null' ), 'items' => array( 'type' => 'string', ), 'default' => null, 'context' => array( 'embed', 'view', 'edit' ), 'readonly' => true, ), 'keywords' => $keywords_definition, 'example' => $example_definition, ), ); $this->schema = $schema; return $this->add_additional_fields_schema( $this->schema ); } /** * Retrieves the query params for collections. * * @since 5.5.0 * * @return array Collection parameters. */ public function get_collection_params() { return array( 'context' => $this->get_context_param( array( 'default' => 'view' ) ), 'namespace' => array( 'description' => __( 'Block namespace.' ), 'type' => 'string', ), ); } }