Rails 4 fonts (webfonts.ru roboto example)

application.scss

//= require fonts

index.scss

@mixin fontface($name, $dir, $filename, $weight, $style) {
  @font-face {
    font-family: $name;
    src: font-url("#{$dir}/#{$filename}.eot");
    src: font-url("#{$dir}/#{$filename}.woff") format('woff'),
    font-url("#{$dir}/#{$filename}.ttf") format('truetype');
    font-weight: $weight;
    font-style: $style;
  }
}

@import 'fonts/roboto';

roboto.scss

@include fontface('Roboto', 'roboto', 'roboto-black', 900, normal);
@include fontface('Roboto', 'roboto', 'roboto-blackitalic', 900, italic);
@include fontface('Roboto', 'roboto', 'roboto-bold', bold, normal);
@include fontface('Roboto Condensed', 'roboto', 'roboto-boldcondensed', bold, normal);
@include fontface('Roboto Condensed', 'roboto', 'roboto-boldcondenseditalic', bold, italic);
@include fontface('Roboto', 'roboto', 'roboto-bolditalic', bold, italic);
@include fontface('Roboto Condensed', 'roboto', 'roboto-condensed', normal, normal);
@include fontface('Roboto Condensed', 'roboto', 'roboto-condenseditalic', normal, italic);
@include fontface('Roboto Condensed', 'roboto', 'robotocondensed-light', 300, normal);
@include fontface('Roboto Condensed', 'roboto', 'robotocondensed-lightitalic', 300, italic);
@include fontface('Roboto', 'roboto', 'roboto-italic', normal, italic);
@include fontface('Roboto', 'roboto', 'roboto-light', 300, normal);
@include fontface('Roboto', 'roboto', 'roboto-lightitalic', 300, italic);
@include fontface('Roboto', 'roboto', 'roboto-medium', 500, normal);
@include fontface('Roboto', 'roboto', 'roboto-mediumitalic', 500, italic);
@include fontface('Roboto', 'roboto', 'roboto-regular', normal, normal);
@include fontface('Roboto Slab', 'roboto', 'robotoslab-bold', bold, normal);
@include fontface('Roboto Slab', 'roboto', 'robotoslab-light', 300, normal);
@include fontface('Roboto Slab', 'roboto', 'robotoslab-regular', normal, normal);
@include fontface('Roboto Slab', 'roboto', 'robotoslab-thin', 100, normal);
@include fontface('Roboto', 'roboto', 'roboto-thin', 100, normal);
@include fontface('Roboto', 'roboto', 'roboto-thinitalic', 100, italic);