Looping through two #each lists in SCSS - css

Question

In my CSS I have to create classes that make reference to a 'hair colour' and 'hairstyle'
I have written a mixin to help make my CSS writing more efficient:
#mixin hair($hair, $colour) {
.hair-#{$colour} .#{$hair} {
background:image-url("xsppsfhair#{$hair}#{$colour}.svg") center top no-repeat,
image-url("xsppsheadgrey.svg") center top no-repeat,
image-url("xsppsbhair#{$hair}#{$colour}.svg") center top no-repeat;
}
}
#include hair(spikyboy, blonde);
#include hair(curlyafroboy, blonde);
This produces the following CSS
.hair-blonde .spikyboy {
background: url('../images/xsppsfhairspikyboyblonde.svg?1348681869') center top no-repeat, url('../images/xsppsheadgrey.svg?1348834673') center top no-repeat, url('../images/xsppsbhairspikyboyblonde.svg?1348682005') center top no-repeat;
}
.hair-blonde .curlyafro {
background: url('../images/xsppsfhaircurlyafroblonde.svg?1348681869') center top no-repeat, url('../images/xsppsheadgrey.svg?1348834673') center top no-repeat, url('../images/xsppsbhaircurlyafroblonde.svg?1348682005') center top no-repeat;
}
This is great, but as I have a total combination of 35 hair colours and hair styles, I still end up with way too many #includes.
On this page, it says SASS has an #each which can be used to loop through lists. There is a further example here. However, both these examples only show looping through 1 list. Is it possible to loop through two lists?
I have tried many variations of my code, but none seem to work. I thought the following would definitely work, but I just get an error message about $colour being undefined.
$hairstyle: (red, blonde, ltbrown);
$haircolour: (red, blonde, ltbrown);
#each $hair in $haircolour, $colour in $haircolour {
.hair-#{$colour} .#{$hair} {
background:image-url("xsppsfhair#{$hair}#{$colour}.svg") center top no-repeat,
image-url("xsppsheadgrey.svg") center top no-repeat,
image-url("xsppsbhair#{$hair}#{$colour}.svg") center top no-repeat;
}
.girl.hair-#{$colour} #eyelash {
background: image-url("xsppseyelash#{$colour}.svg") center top no-repeat;
}
}
Could someone please give me some pointers as to what I am doing wrong?

Answer 1

What you need to do is create a loop inside the first loop (I've simplified a bit so it's easier to see):
#mixin style-matrix($colors, $styles) {
#each $s in $styles {
#each $c in $colors {
.#{$s} .#{$c} {
background:image-url("xsppsfhair-#{$s}-#{$c}.svg");
}
}
}
}
$colors: blonde, brunette, auburn;
$styles: beehive, pixie, bob;
#include style-matrix($colors, $styles);
You get this output:
.beehive .blonde {
background: image-url("xsppsfhair-beehive-blonde.svg");
}
.beehive .brunette {
background: image-url("xsppsfhair-beehive-brunette.svg");
}
.beehive .auburn {
background: image-url("xsppsfhair-beehive-auburn.svg");
}
.pixie .blonde {
background: image-url("xsppsfhair-pixie-blonde.svg");
}
.pixie .brunette {
background: image-url("xsppsfhair-pixie-brunette.svg");
}
.pixie .auburn {
background: image-url("xsppsfhair-pixie-auburn.svg");
}
.bob .blonde {
background: image-url("xsppsfhair-bob-blonde.svg");
}
.bob .brunette {
background: image-url("xsppsfhair-bob-brunette.svg");
}
.bob .auburn {
background: image-url("xsppsfhair-bob-auburn.svg");
}