How to do a comparison check? (equal operator)

support
1

Hello - I’m looping through my site category taxonomies and I want to add an “active” css class if I’m currently in a Node that is in that category.

This is my working code without the check:

<ul id="nav">
  {{ $currentNode := . }}
  {{ range $name, $taxonomy := .Site.Taxonomies.categories }}
  <li><a href="/categories/{{ $name | urlize }}">{{ $name }}</a></li>
  {{ end }}
</ul>

What I’m trying to accomplish is if $currentNode.Title === $name. I tried doing the following but then my partial wouldn’t render anymore:

<ul id="navigation">
  {{ $currentNode := . }}
  {{ range $name, $taxonomy := .Site.Taxonomies.categories }}
    {{ if .IsNode }}
     {{ if in $currentNode.Title $name }}FOUND!{{end}}
    {{ end }}
  <li><a href="/categories/{{ $name | urlize }}">{{ $name }}</a></li>
  {{ end }}
</ul>

Any ideas please!

2

Have a look at the eq template func.

3

Heh, I swear I’m blind sometimes. I looked at that doc 2 times! Can you tell me why .IsNode doesn’t work in the range? Is it a scoping issue?

For instance, this does NOT work. The template is not outputted:

<ul id="navigation">
  {{ $currentNode := . }}
  {{ range $name, $taxonomy := .Site.Taxonomies.categories }}
    {{ if .IsNode }}
     {{ if eq $currentNode.Title $name }}FOUND!{{end}}
    {{ end }}
    <li><a href="/categories/{{ $name | urlize }}">{{ $name }}</a></li>
  {{ end }}
</ul>

For instance, this DOES work. BUT I cannot check if the page is a node:

<ul id="navigation">
  {{ $currentNode := . }}
  {{ range $name, $taxonomy := .Site.Taxonomies.categories }}
    {{ if eq $currentNode.Title $name }}FOUND!{{end}}
    <li><a href="/categories/{{ $name | urlize }}">{{ $name }}</a></li>
  {{ end }}
</ul>
4

Yes, the “.” is now a category.

{{ if $.IsNode }}

Should be correct in most cases – but, of course, not when you are doing a range over a list pof pages.

5

Oh. Where does the idea of the . being the current scope come from? Is that a GoLang thing or Hugo?

6

That is Rob Pike in Google’s construction.