WP_REST_Templates_Controller::prepare_item_for_response( WP_Block_Template $item, WP_REST_Request $request ): WP_REST_Response

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$itemWP_Block_Template

Template instance.

$requestWP_REST_Request

Request object.

Return value

WP_REST_Response

Response object.

Performance profile

How much work a call to WP_REST_Templates_Controller::prepare_item_for_response() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Light

Touches nothing outside its own arguments.

Scaling

Scales with input

The body loops, so the work grows with what you pass in.

Instructions

171–231

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 318.

Plugin surface

1 hook

Third-party callbacks on 'the_title' run inside this call, and their cost is not bounded by anything here.

Called by

6

6 places in core call this, so the cost is paid more often than your own code shows.

What it touches

• hookthird-party callbacksapply_filters()called directly

Further down the call graph this can also reach query, option, cache, serialize and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 80 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_REST_Templates_Controller::prepare_item_for_response() can have, taken from its control-flow graph on PHP 8.5.

This body has more branch combinations than are worth enumerating, so the table covers the outcomes found first rather than every one that exists.

Hooks and filters fired · 1

One hook fires while WP_REST_Templates_Controller::prepare_item_for_response() runs, in this order:

1. 1
   apply_filters( the_title )filterline 747 (+72 into the body)

   Filters the post title.

Uses · 18

• parse_blocks()Parses blocks out of a content string.
• resolve_pattern_blocks()Replaces patterns in a block tree with their content.
• serialize_blocks()Returns a joined string of the aggregate serialization of the given parsed blocks.
• rest_is_field_included()Given an array of fields to include in a response, some of which may be `nested.fields`, determine whether the provided field should be included in the response body.
• block_version()Returns the current version of the block format that the content string is using.
• apply_filters()Calls the callback functions that have been added to a filter hook.
• mysql_to_rfc3339()Parses and formats a MySQL datetime (Y-m-d H:i:s) for ISO8601 (Y-m-d\TH:i:s).
• rest_ensure_response()Ensures a REST response is a response object (for consistency).
• WP_REST_Response::__construct()
• WP_REST_Templates_Controller::get_fields_for_response()
• WP_REST_Templates_Controller::get_wp_templates_author_text_field()Returns a human readable text for the author of the template.
• WP_REST_Templates_Controller::get_wp_templates_original_source_field()Returns the source from where the template originally comes from.

Used by · 6

• WP_REST_Templates_Controller::create_item()Creates a single template.
• WP_REST_Templates_Controller::delete_item()Deletes a single template.
• WP_REST_Templates_Controller::get_item()Returns the given template
• WP_REST_Templates_Controller::get_items()Returns a list of templates.
• WP_REST_Templates_Controller::get_template_fallback()Returns the fallback template for the given slug.
• WP_REST_Templates_Controller::update_item()Updates a single template.

Source code

View on Trac ↗View on GitHub ↗

675	public function prepare_item_for_response( $item, $request ) {676		// Don't prepare the response body for HEAD requests.677		if ( $request->is_method( 'HEAD' ) ) {678			return new WP_REST_Response( array() );679		}680 681		/*682		 * Resolve pattern blocks so they don't need to be resolved client-side683		 * in the editor, improving performance.684		 */685		$blocks        = parse_blocks( $item->content );686		$blocks        = resolve_pattern_blocks( $blocks );687		$item->content = serialize_blocks( $blocks );688 689		// Restores the more descriptive, specific name for use within this method.690		$template = $item;691 692		$fields = $this->get_fields_for_response( $request );693 694		// Base fields for every template.695		$data = array();696 697		if ( rest_is_field_included( 'id', $fields ) ) {698			$data['id'] = $template->id;699		}700 701		if ( rest_is_field_included( 'theme', $fields ) ) {702			$data['theme'] = $template->theme;703		}704 705		if ( rest_is_field_included( 'content', $fields ) ) {706			$data['content'] = array();707		}708		if ( rest_is_field_included( 'content.raw', $fields ) ) {709			$data['content']['raw'] = $template->content;710		}711 712		if ( rest_is_field_included( 'content.block_version', $fields ) ) {713			$data['content']['block_version'] = block_version( $template->content );714		}715 716		if ( rest_is_field_included( 'slug', $fields ) ) {717			$data['slug'] = $template->slug;718		}719 720		if ( rest_is_field_included( 'source', $fields ) ) {721			$data['source'] = $template->source;722		}723 724		if ( rest_is_field_included( 'origin', $fields ) ) {725			$data['origin'] = $template->origin;726		}727 728		if ( rest_is_field_included( 'type', $fields ) ) {729			$data['type'] = $template->type;730		}731 732		if ( rest_is_field_included( 'description', $fields ) ) {733			$data['description'] = $template->description;734		}735 736		if ( rest_is_field_included( 'title', $fields ) ) {737			$data['title'] = array();738		}739 740		if ( rest_is_field_included( 'title.raw', $fields ) ) {741			$data['title']['raw'] = $template->title;742		}743 744		if ( rest_is_field_included( 'title.rendered', $fields ) ) {745			if ( $template->wp_id ) {746				/** This filter is documented in wp-includes/post-template.php */747				$data['title']['rendered'] = apply_filters( 'the_title', $template->title, $template->wp_id );748			} else {749				$data['title']['rendered'] = $template->title;750			}751		}752 753		if ( rest_is_field_included( 'status', $fields ) ) {754			$data['status'] = $template->status;

Changelog

Introduced in 5.8.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 6.9.7 tag, from src/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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