mirror of
https://github.com/gohugoio/hugo.git
synced 2025-08-29 22:29:56 +02:00
Merge commit 'a6e635ca7d905d9ec3ffd708db2694f680b03aae'
This commit is contained in:
171
docs/content/en/templates/partial.md
Normal file
171
docs/content/en/templates/partial.md
Normal file
@@ -0,0 +1,171 @@
|
||||
---
|
||||
title: Partial templates
|
||||
description: Partials are smaller, context-aware components in your list and page templates that can be used economically to keep your templating DRY.
|
||||
categories: [templates]
|
||||
keywords: []
|
||||
menu:
|
||||
docs:
|
||||
parent: templates
|
||||
weight: 110
|
||||
weight: 110
|
||||
toc: true
|
||||
aliases: [/templates/partials/,/layout/chrome/]
|
||||
---
|
||||
|
||||
{{< youtube pjS4pOLyB7c >}}
|
||||
|
||||
## Use partials in your templates
|
||||
|
||||
All partials for your Hugo project are located in a single `layouts/partials` directory. For better organization, you can create multiple subdirectories within `partials` as well:
|
||||
|
||||
```txt
|
||||
layouts/
|
||||
└── partials/
|
||||
├── footer/
|
||||
│ ├── scripts.html
|
||||
│ └── site-footer.html
|
||||
├── head/
|
||||
│ ├── favicons.html
|
||||
│ ├── metadata.html
|
||||
│ ├── prerender.html
|
||||
│ └── twitter.html
|
||||
└── header/
|
||||
├── site-header.html
|
||||
└── site-nav.html
|
||||
```
|
||||
|
||||
All partials are called within your templates using the following pattern:
|
||||
|
||||
```go-html-template
|
||||
{{ partial "<PATH>/<PARTIAL>.html" . }}
|
||||
```
|
||||
|
||||
{{% note %}}
|
||||
One of the most common mistakes with new Hugo users is failing to pass a context to the partial call. In the pattern above, note how "the dot" (`.`) is required as the second argument to give the partial context. You can read more about "the dot" in the [Hugo templating introduction](/templates/introduction/#context).
|
||||
{{% /note %}}
|
||||
|
||||
{{% note %}}
|
||||
`<PARTIAL>` including `baseof` is reserved. ([#5373](https://github.com/gohugoio/hugo/issues/5373))
|
||||
{{% /note %}}
|
||||
|
||||
As shown in the above example directory structure, you can nest your directories within `partials` for better source organization. You only need to call the nested partial's path relative to the `partials` directory:
|
||||
|
||||
```go-html-template
|
||||
{{ partial "header/site-header.html" . }}
|
||||
{{ partial "footer/scripts.html" . }}
|
||||
```
|
||||
|
||||
### Variable scoping
|
||||
|
||||
The second argument in a partial call is the variable being passed down. The above examples are passing the `.`, which tells the template receiving the partial to apply the current [context][context].
|
||||
|
||||
This means the partial will *only* be able to access those variables. The partial is isolated and cannot access the outer scope. From within the partial, `$.Var` is equivalent to `.Var`.
|
||||
|
||||
## Returning a value from a partial
|
||||
|
||||
In addition to outputting markup, partials can be used to return a value of any type. In order to return a value, a partial must include a lone `return` statement *at the end of the partial*.
|
||||
|
||||
### Example GetFeatured
|
||||
|
||||
```go-html-template
|
||||
{{/* layouts/partials/GetFeatured.html */}}
|
||||
{{ return first . (where site.RegularPages "Params.featured" true) }}
|
||||
```
|
||||
|
||||
```go-html-template
|
||||
{{/* layouts/index.html */}}
|
||||
{{ range partial "GetFeatured.html" 5 }}
|
||||
[...]
|
||||
{{ end }}
|
||||
```
|
||||
|
||||
### Example GetImage
|
||||
|
||||
```go-html-template
|
||||
{{/* layouts/partials/GetImage.html */}}
|
||||
{{ $image := false }}
|
||||
{{ with .Params.gallery }}
|
||||
{{ $image = index . 0 }}
|
||||
{{ end }}
|
||||
{{ with .Params.image }}
|
||||
{{ $image = . }}
|
||||
{{ end }}
|
||||
{{ return $image }}
|
||||
```
|
||||
|
||||
```go-html-template
|
||||
{{/* layouts/_default/single.html */}}
|
||||
{{ with partial "GetImage.html" . }}
|
||||
[...]
|
||||
{{ end }}
|
||||
```
|
||||
|
||||
{{% note %}}
|
||||
Only one `return` statement is allowed per partial file.
|
||||
{{% /note %}}
|
||||
|
||||
## Inline partials
|
||||
|
||||
You can also define partials inline in the template. But remember that template namespace is global, so you need to make sure that the names are unique to avoid conflicts.
|
||||
|
||||
```go-html-template
|
||||
Value: {{ partial "my-inline-partial.html" . }}
|
||||
|
||||
{{ define "partials/my-inline-partial.html" }}
|
||||
{{ $value := 32 }}
|
||||
{{ return $value }}
|
||||
{{ end }}
|
||||
```
|
||||
|
||||
## Cached partials
|
||||
|
||||
The `partialCached` template function provides significant performance gains for complex templates that don't need to be re-rendered on every invocation. See [details][partialcached].
|
||||
|
||||
## Examples
|
||||
|
||||
### `header.html`
|
||||
|
||||
The following `header.html` partial template is used for [spf13.com](https://spf13.com/):
|
||||
|
||||
{{< code file=layouts/partials/header.html >}}
|
||||
<!DOCTYPE html>
|
||||
<html class="no-js" lang="en-US" prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb#">
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
|
||||
{{ partial "meta.html" . }}
|
||||
|
||||
<base href="{{ .Site.BaseURL }}">
|
||||
<title> {{ .Title }} : spf13.com </title>
|
||||
<link rel="canonical" href="{{ .Permalink }}">
|
||||
{{ if .RSSLink }}<link href="{{ .RSSLink }}" rel="alternate" type="application/rss+xml" title="{{ .Title }}" />{{ end }}
|
||||
|
||||
{{ partial "head_includes.html" . }}
|
||||
</head>
|
||||
{{< /code >}}
|
||||
|
||||
{{% note %}}
|
||||
The `header.html` example partial was built before the introduction of block templates to Hugo. Read more on [base templates and blocks](/templates/base/) for defining the outer chrome or shell of your master templates (i.e., your site's head, header, and footer). You can even combine blocks and partials for added flexibility.
|
||||
{{% /note %}}
|
||||
|
||||
### `footer.html`
|
||||
|
||||
The following `footer.html` partial template is used for [spf13.com](https://spf13.com/):
|
||||
|
||||
{{< code file=layouts/partials/footer.html >}}
|
||||
<footer>
|
||||
<div>
|
||||
<p>
|
||||
© 2013-14 Steve Francia.
|
||||
<a href="https://creativecommons.org/licenses/by/3.0/" title="Creative Commons Attribution">Some rights reserved</a>;
|
||||
please attribute properly and link back.
|
||||
</p>
|
||||
</div>
|
||||
</footer>
|
||||
{{< /code >}}
|
||||
|
||||
[context]: /templates/introduction/
|
||||
[customize]: /hugo-modules/theme-components/
|
||||
[lookup order]: /templates/lookup-order/
|
||||
[partialcached]: /functions/partials/includecached/
|
||||
[themes]: /themes/
|
Reference in New Issue
Block a user