WP_REST_Server::get_data_for_route( string $route, array $callbacks, string $context = ‘view’ ): array|null

Source

public function get_data_for_route( $route, $callbacks, $context = 'view' ) {
	$data = array(
		'namespace' => '',
		'methods'   => array(),
		'endpoints' => array(),
	);

	$allow_batch = false;

	if ( isset( $this->route_options[ $route ] ) ) {
		$options = $this->route_options[ $route ];

		if ( isset( $options['namespace'] ) ) {
			$data['namespace'] = $options['namespace'];
		}

		$allow_batch = isset( $options['allow_batch'] ) ? $options['allow_batch'] : false;

		if ( isset( $options['schema'] ) && 'help' === $context ) {
			$data['schema'] = call_user_func( $options['schema'] );
		}
	}

	$allowed_schema_keywords = array_flip( rest_get_allowed_schema_keywords() );

	$route = preg_replace( '#\(\?P<(\w+?)>.*?\)#', '{$1}', $route );

	foreach ( $callbacks as $callback ) {
		// Skip to the next route if any callback is hidden.
		if ( empty( $callback['show_in_index'] ) ) {
			continue;
		}

		$data['methods'] = array_merge( $data['methods'], array_keys( $callback['methods'] ) );
		$endpoint_data   = array(
			'methods' => array_keys( $callback['methods'] ),
		);

		$callback_batch = isset( $callback['allow_batch'] ) ? $callback['allow_batch'] : $allow_batch;

		if ( $callback_batch ) {
			$endpoint_data['allow_batch'] = $callback_batch;
		}

		if ( isset( $callback['args'] ) ) {
			$endpoint_data['args'] = array();

			foreach ( $callback['args'] as $key => $opts ) {
				if ( is_string( $opts ) ) {
					$opts = array( $opts => 0 );
				} elseif ( ! is_array( $opts ) ) {
					$opts = array();
				}
				$arg_data             = array_intersect_key( $opts, $allowed_schema_keywords );
				$arg_data['required'] = ! empty( $opts['required'] );

				$endpoint_data['args'][ $key ] = $arg_data;
			}
		}

		$data['endpoints'][] = $endpoint_data;

		// For non-variable routes, generate links.
		if ( ! str_contains( $route, '{' ) ) {
			$data['_links'] = array(
				'self' => array(
					array(
						'href' => rest_url( $route ),
					),
				),
			);
		}
	}

	if ( empty( $data['methods'] ) ) {
		// No methods supported, hide the route.
		return null;
	}

	return $data;
}

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