mirror of
https://github.com/gohugoio/hugo.git
synced 2024-12-02 13:45:24 -05:00
94 lines
3.1 KiB
Markdown
94 lines
3.1 KiB
Markdown
---
|
|
date: 2016-03-29T21:26:20-05:00
|
|
menu:
|
|
main:
|
|
parent: layout
|
|
prev: /templates/views/
|
|
next: /templates/partials/
|
|
title: Block Templates
|
|
weight: 80
|
|
---
|
|
|
|
Go 1.6 includes a powerful new keyword, `block`. This construct allows you to define the outer shell of your pages one or more master template(s), filling in or overriding portions as necessary.
|
|
|
|
## Base template lookup
|
|
This is the order Hugo searches for a base template:
|
|
|
|
1. /layouts/_current-path_/_template-name_-baseof.html, e.g. list-baseof.html.
|
|
2. /layouts/_current-path_/baseof.html
|
|
3. /layouts/_default/_template-name_-baseof.html e.g. list-baseof.html.
|
|
4. /layouts/_default/baseof.html
|
|
|
|
For each of the steps above, it will first look in the project, then, if theme is set, in the theme's layouts folder. Hugo picks the first base template found.
|
|
|
|
As an example, with a site using the theme `exampletheme`, when rendering the section list for the section `post`. Hugo picks the `section/post.html` as the template and this template has a `define` section that indicates it needs a base template. This is then the lookup order:
|
|
|
|
1. `/layouts/section/post-baseof.html`
|
|
2. `/themes/exampletheme/layouts/section/post-baseof.html`
|
|
3. `/layouts/section/baseof.html`
|
|
4. `/themes/exampletheme/layouts/section/baseof.html`
|
|
5. `/layouts/_default/post-baseof.html`
|
|
6. `/themes/exampletheme/layouts/_default/post-baseof.html`
|
|
7. `/layouts/_default/baseof.html`
|
|
8. `/themes/exampletheme/layouts/_default/baseof.html`
|
|
|
|
|
|
|
|
## Define the base template
|
|
|
|
Let's define a simple base template (`_default/baseof.html`), a shell from which all our pages will start.
|
|
|
|
```html
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<title>{{ block "title" . }}
|
|
<!-- Blocks may include default content. -->
|
|
{{ .Site.Title }}
|
|
{{ end }}</title>
|
|
</head>
|
|
<body>
|
|
<!-- Code that all your templates share, like a header -->
|
|
|
|
{{ block "main" . }}
|
|
<!-- The part of the page that begins to differ between templates -->
|
|
{{ end }}
|
|
|
|
<!-- More shared code, perhaps a footer -->
|
|
</body>
|
|
</html>
|
|
```
|
|
|
|
## Overriding the base
|
|
|
|
Your [default list template]({{< relref "templates/list.md" >}}) (`_default/list.html`) will inherit all of the code defined in the base template. It could then implement its own "main" block from the base template above like so:
|
|
|
|
```html
|
|
<!-- Note the lack of Go's context "dot" when defining blocks -->
|
|
{{ define "main" }}
|
|
<h1>Posts</h1>
|
|
{{ range .Data.Pages }}
|
|
<article>
|
|
<h2>{{ .Title }}</h2>
|
|
{{ .Content }}
|
|
</article>
|
|
{{ end }}
|
|
{{ end }}
|
|
```
|
|
|
|
This replaces the contents of our (basically empty) "main" block with something useful for the list template. In this case, we didn't define a "title" block so the contents from our base template remain unchanged in lists.
|
|
|
|
In our [default single template]({{< relref "templates/content.md" >}}) (`_default/single.html`), let's implement both blocks:
|
|
|
|
```html
|
|
{{ define "title" }}
|
|
{{ .Title }} – {{ .Site.Title }}
|
|
{{ end }}
|
|
{{ define "main" }}
|
|
<h1>{{ .Title }}</h1>
|
|
{{ .Content }}
|
|
{{ end }}
|
|
```
|
|
|
|
This overrides both block areas from the base template with code unique to our single template.
|