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---
title: Taxonomy variables
description: Hugo's taxonomy system exposes variables to taxonomy and term templates.
categories: [variables and parameters]
keywords: [taxonomy,term]
menu:
docs:
parent: variables
weight: 30
toc: true
weight: 30
---
## Taxonomy templates
Pages rendered by taxonomy templates have `.Kind` set to `taxonomy` and `.Type` set to the taxonomy name.
In taxonomy templates you may access `.Site`, `.Page`. `.Section`, and `.File` variables, as well as the following _taxonomy_ variables:
.Data.Singular
: The singular name of the taxonomy (e.g., `tags => tag`).
.Data.Plural
: The plural name of the taxonomy (e.g., `tags => tags`).
.Data.Pages
: The collection of term pages related to this taxonomy. Aliased by `.Pages`.
.Data.Terms
: A map of terms and weighted pages related to this taxonomy.
.Data.Terms.Alphabetical
: A map of terms and weighted pages related to this taxonomy, sorted alphabetically in ascending order. Reverse the sort order with`.Data.Terms.Alphabetical.Reverse`.
.Data.Terms.ByCount
: A map of terms and weighted pages related to this taxonomy, sorted by count in ascending order. Reverse the sort order with`.Data.Terms.ByCount.Reverse`.
## Term templates
Pages rendered by term templates have `.Kind` set to `term` and `.Type` set to the taxonomy name.
In term templates you may access `.Site`, `.Page`. `.Section`, and `.File` variables, as well as the following _term_ variables:
.Data.Singular
: The singular name of the taxonomy (e.g., `tags => tag`).
.Data.Plural
: The plural name of the taxonomy (e.g., `tags => tags`).
.Data.Pages
: The collection of content pages related to this taxonomy. Aliased by `.Pages`.
.Data.Term
: The term itself (e.g., `tag-one`).
## Access taxonomy data from any template
Access the entire taxonomy data structure from any template with `site.Taxonomies`. This returns a map of taxonomies, terms, and a collection of weighted content pages related to each term. For example:
```json
{
"categories": {
"news": [
{
"Weight": 0,
"Page": {
"Title": "Post 1",
"Date": "2022-12-18T15:13:35-08:00"
...
}
},
{
"Weight": 0,
"Page": {
"Title": "Post 2",
"Date": "2022-12-18T15:13:46-08:00",
...
}
}
]
},
"tags": {
"international": [
{
"Weight": 0,
"Page": {
"Title": "Post 1",
"Date": "2021-01-01T00:00:00Z"
...
}
}
]
}
}
```
Access a subset of the taxonomy data structure by chaining one or more identifiers, or by using the [`index`] function with one or more keys. For example, to access the collection of weighted content pages related to the news category, use either of the following:
[`index`]: /functions/collections/indexfunction/
```go-html-template
{{ $pages := site.Taxonomies.categories.news }}
{{ $pages := index site.Taxonomies "categories" "news" }}
```
For example, to render the entire taxonomy data structure as a nested unordered list:
```go-html-template
<ul>
{{ range $taxonomy, $terms := site.Taxonomies }}
<li>
{{ with site.GetPage $taxonomy }}
<a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a>
{{ end }}
<ul>
{{ range $term, $weightedPages := $terms }}
<li>
{{ with site.GetPage (path.Join $taxonomy $term) }}
<a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a>
{{ end }}
</li>
<ul>
{{ range $weightedPages }}
<li>
<a href="{{ .RelPermalink }}"> {{ .LinkTitle }}</a>
</li>
{{ end }}
</ul>
{{ end }}
</ul>
</li>
{{ end }}
</ul>
```
See [Taxonomy Templates] for more examples.
[Taxonomy Templates]: /templates/taxonomy-templates/
|
