Plack::Middleware::File::Sass(3) Sass and SCSS support for all Plack frameworks


use Plack::App::File;
use Plack::Builder;
builder {
mount "/stylesheets" => builder {
enable "File::Sass";
Plack::App::File->new(root => "./stylesheets");
# Or with Middleware::Static
enable "File::Sass", syntax => "scss";
enable "Static", path => qr/\.css$/, root => "./static";


Plack::Middleware::File::Sass is a Plack middleware component that works with Plack::App::File or Plack::Middleware::Static to compile Sass <> templates into CSS stylesheet in every request.

When a request comes in for .css file, this middleware changes the internal path to .sass or .scss, depending on the configuration, in the same directory. If the Sass template is found, a new CSS stylesheet is built on memory and served to the browsers. Otherwise, it falls back to the original .css file in the directory.

This middleware should be very handy for the development. While Sass to CSS rendering is reasonably fast, for the production environment you might want to precompile Sass templates to CSS files on disk and serves them with a real web server like nginx or lighttpd.


If you have the sass gem version higher than 3 installed and have the "sass" executable available in your PATH, this module automatically uses the command to convert Sass or SCSS into CSS. If the command is not available and you have Text::Sass perl module available, it will be used. Otherwise you'll get an exception during the initialization of this middleware component.


Defines which syntax to use. Valid values are sass and scss. Defaults to sass.


Tatsuhiko Miyagawa <[email protected]>


This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.