Link list of pages by tags as a shortcode

Hello together,

I want to create a shortcode to which I can give a tag and it will display all pages with that tag as a html link list. My current approach looks like this:

{{ $tag := .Get "tag"}}

    {{range where .Site.Pages ".Params.tags" "intersect"  $tag }}
            <a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a>

So I want to recall it with something like {{< shortcode tag=“mytag” >}}

But this doesn’t seem to work and I don’t know why. Could anyone tell me what I did wrong here?
I also tried using (slice $tag) instead of $tag with “intersect” but that doesn’t work either. I would appreciate some help.

First off, intersect expects two slices. But I guess your context is wrong: dot is not what you think it is. For example, .Params.tags should probably be $.Page.Params.tags.
Checkout the shortcode description in the documentation:

Okay, I understand. $.Page.Params.tags is the array of the tags of the pages and I want it to intersect with $tag .

Unfortunately I still don’t get any links listed by using

{{range where .Site.Pages "$.Page.Params.tags" intersect" "$tag"}} or
{{range where .Site.Pages "$.Page.Params.tags" intersect" (slice "$tag")}}

To clarify, you don’t have a context problem.

  {{ range where .Site.Pages "Params.tags" "intersect" (slice (.Get 0)) }}
      <a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a>
  {{ end }}

Call it with:

{{< pages-with-tag foo >}}

The reason it didn’t work for you, I suspect, is that some/all of your front matter tags fields are scalar instead of arrays.

You must do this:

tags = ['foo']

Not this:

tags = 'foo'

Try it:

git clone --single-branch -b hugo-forum-topic-48427 hugo-forum-topic-48427
cd hugo-forum-topic-48427
hugo server

Please read the documentation and my post again carefully. Your dot is not what you think it is anywhere in your code – .Site.Pages probably returns nothing, either.

And there’s no point in trying to intersect a slice with a single value.

Your shortcode doesn’t work either. I always used tags in an array in my frontmatter

Edit: It does work! My mistake was using (slice "...") instead of (slice (...)).


Okay, now I am confused.

{{ range .Site.Pages }}
  <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
{{ end }}

for example works.

Well, @jmooring is far more knowledgeable than I am, so I was probably wrong.

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