Hugo: <nil> is not a Resource

[bep]

error calling fingerprint: <nil> is not a Resource

Got the above and similar when porting gohugoioTheme to a module in Hugo Docs today.

[SiamKreative]

@bep How was this solved? I am running into a very similar issue on Cactus theme

executing "partials/head.html" at <toCSS>: error calling toCSS: type <nil> not supported in Resource transformations

[bep]

You need to do a nil check in the templates. The thing is, resource.Get "someresource.css" returns nil if not found.

We could probably improve the error message, but you need to do something ala:

{ { $scss := resource.Get "foo.scss" }}

{{ if $scss }}
// call toSCSS
{{ end }}

[dallashudgens]

If my files are under the assets folder: resources/_gen/assets/sass/main.scss, I don't understand why it can't find it.

{{ $style := resources.Get "sass/main.scss" | toCSS | minify | fingerprint }}
<link rel="stylesheet" href="{{ $style.Permalink }}">

[queiroz]

@dallashudgens The documentation states the following:

Asset files must be stored in the asset directory. This is /assets by default, but can be configured via the configuration file’s assetDir key.

then given the example on that page:

{{ $style := resources.Get "sass/main.scss" | resources.ToCSS | resources.Minify | resources.Fingerprint }}
<link rel="stylesheet" href="{{ $style.Permalink }}">

I ended up with the same error.
So I've decided to add a / to the beginning of the resources.Get "/sass/main.scss" and voila it worked 😄

I am totally new to Hugo and am just giving a go, I understand the frustration when trying something new and it doesn't work as expected.

[DavidOliver]

I'm finding that hugo server needs to be stopped and restarted after asset files have been placed in /assets in order for resources.Get to work. Probably worth mentioning in the docs. :)

Edit: subsequently added asset files are being successfully picked up without stopping and starting the server.

[rogeralsing]

This is highly confusing.

I've tried the following paths:

/static/assets/scss
/resources/_gen/assets/scss

/themes/mytheme/static/assets/scss
/themes/mytheme/resources/_gen/assets/scss

the call to resource.Get is inside my baseof inside mytheme

None of this works.

Ideas?