WP_REST_Server::add_active_theme_link_to_index( WP_REST_Response $response )

Source

protected function add_active_theme_link_to_index( WP_REST_Response $response ) {
	$should_add = current_user_can( 'switch_themes' ) || current_user_can( 'manage_network_themes' );

	if ( ! $should_add && current_user_can( 'edit_posts' ) ) {
		$should_add = true;
	}

	if ( ! $should_add ) {
		foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {
			if ( current_user_can( $post_type->cap->edit_posts ) ) {
				$should_add = true;
				break;
			}
		}
	}

	if ( $should_add ) {
		$theme = wp_get_theme();
		$response->add_link( 'https://api.w.org/active-theme', rest_url( 'wp/v2/themes/' . $theme->get_stylesheet() ) );
	}
}

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