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Markdown
394 lines
11 KiB
Markdown
---
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aliases:
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- /layout/indexes/
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lastmod: 2015-08-04
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date: 2013-07-01
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linktitle: List of Content
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menu:
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main:
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parent: layout
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next: /templates/homepage
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prev: /templates/content
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title: Content List Template
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weight: 40
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toc: true
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---
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A list template is any template that will be used to render multiple pieces of
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content in a single HTML page (with the exception of the [homepage](/layout/homepage/) which has a
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dedicated template).
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We are using the term list in its truest sense, a sequential arrangement
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of material, especially in alphabetical or numerical order. Hugo uses
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list templates to render anyplace where content is being listed such as
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taxonomies and sections.
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## Which Template will be rendered?
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Hugo uses a set of rules to figure out which template to use when
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rendering a specific page.
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Hugo will use the following prioritized list. If a file isn’t present,
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then the next one in the list will be used. This enables you to craft
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specific layouts when you want to without creating more templates
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than necessary. For most sites only the \_default file at the end of
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the list will be needed.
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### Section Lists
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A Section will be rendered at /`SECTION`/ (e.g. http://spf13.com/project/)
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* /layouts/section/`SECTION`.html
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* /layouts/\_default/section.html
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* /layouts/\_default/list.html
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* /themes/`THEME`/layouts/section/`SECTION`.html
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* /themes/`THEME`/layouts/\_default/section.html
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* /themes/`THEME`/layouts/\_default/list.html
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### Taxonomy Lists
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A Taxonomy will be rendered at /`PLURAL`/`TERM`/ (e.g. http://spf13.com/topics/golang/) from:
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* /layouts/taxonomy/`SINGULAR`.html (e.g. `/layouts/taxonomy/topic.html`)
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* /layouts/\_default/taxonomy.html
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* /layouts/\_default/list.html
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* /themes/`THEME`/layouts/taxonomy/`SINGULAR`.html
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* /themes/`THEME`/layouts/\_default/taxonomy.html
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* /themes/`THEME`/layouts/\_default/list.html
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### Section RSS
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A Section’s RSS will be rendered at /`SECTION`/index.xml (e.g. http://spf13.com/project/index.xml)
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*Hugo ships with its own [RSS 2.0][] template. In most cases this will
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be sufficient, and an RSS template will not need to be provided by the
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user.*
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Hugo provides the ability for you to define any RSS type you wish, and
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can have different RSS files for each section and taxonomy.
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* /layouts/section/`SECTION`.rss.xml
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* /layouts/\_default/rss.xml
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* /themes/`THEME`/layouts/section/`SECTION`.rss.xml
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* /themes/`THEME`/layouts/\_default/rss.xml
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### Taxonomy RSS
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A Taxonomy’s RSS will be rendered at /`PLURAL`/`TERM`/index.xml (e.g. http://spf13.com/topics/golang/index.xml)
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*Hugo ships with its own [RSS 2.0][] template. In most cases this will
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be sufficient, and an RSS template will not need to be provided by the
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user.*
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Hugo provides the ability for you to define any RSS type you wish, and
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can have different RSS files for each section and taxonomy.
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* /layouts/taxonomy/`SINGULAR`.rss.xml
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* /layouts/\_default/rss.xml
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* /themes/`THEME`/layouts/taxonomy/`SINGULAR`.rss.xml
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* /themes/`THEME`/layouts/\_default/rss.xml
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## Variables
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List pages are of the type "node" and have all the [node variables](/templates/variables/)
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and [site variables](/templates/variables/) available to use in the templates.
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Taxonomy pages will additionally have:
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**.Data.`Singular`** The taxonomy itself.<br>
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## Example List Template Pages
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### Example section template (post.html)
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This content template is used for [spf13.com](http://spf13.com/).
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It makes use of [partial templates](/templates/partials/). All examples use a
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[view](/templates/views/) called either "li" or "summary" which this example site
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defined.
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{{ partial "header.html" . }}
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{{ partial "subheader.html" . }}
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<section id="main">
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<div>
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<h1 id="title">{{ .Title }}</h1>
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<ul id="list">
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{{ range .Data.Pages }}
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{{ .Render "li"}}
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{{ end }}
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</ul>
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</div>
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</section>
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{{ partial "footer.html" . }}
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### Example taxonomy template (tag.html)
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This content template is used for [spf13.com](http://spf13.com/).
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It makes use of [partial templates](/templates/partials/). All examples use a
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[view](/templates/views/) called either "li" or "summary" which this example site
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defined.
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{{ partial "header.html" . }}
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{{ partial "subheader.html" . }}
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<section id="main">
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<div>
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<h1 id="title">{{ .Title }}</h1>
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{{ range .Data.Pages }}
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{{ .Render "summary"}}
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{{ end }}
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</div>
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</section>
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{{ partial "footer.html" . }}
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## Ordering Content
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In the case of Hugo, each list will render the content based on metadata provided in the [front
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matter](/content/front-matter/). See [ordering content](/content/ordering/) for more information.
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Here are a variety of different ways you can order the content items in
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your list templates:
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### Order by Weight -> Date (default)
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{{ range .Data.Pages }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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### Order by Weight -> Date
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{{ range .Data.Pages.ByWeight }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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### Order by Date
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{{ range .Data.Pages.ByDate }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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### Order by PublishDate
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{{ range .Data.Pages.ByPublishDate }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .PublishDate.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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### Order by Length
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{{ range .Data.Pages.ByLength }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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### Order by Title
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{{ range .Data.Pages.ByTitle }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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### Order by LinkTitle
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{{ range .Data.Pages.ByLinkTitle }}
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<li>
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<a href="{{ .Permalink }}">{{ .LinkTitle }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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### Reverse Order
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Can be applied to any of the above. Using Date for an example.
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{{ range .Data.Pages.ByDate.Reverse }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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## Grouping Content
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Hugo provides some grouping functions for list pages. You can use them to
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group pages by Section, Type, Date etc.
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Here are a variety of different ways you can group the content items in
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your list templates:
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### Grouping by Page field
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{{ range .Data.Pages.GroupBy "Section" }}
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<h3>{{ .Key }}</h3>
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<ul>
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{{ range .Pages }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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</ul>
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{{ end }}
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### Grouping by Page date
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{{ range .Data.Pages.GroupByDate "2006-01" }}
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<h3>{{ .Key }}</h3>
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<ul>
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{{ range .Pages }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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</ul>
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{{ end }}
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### Grouping by Page publish date
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{{ range .Data.Pages.GroupByPublishDate "2006-01" }}
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<h3>{{ .Key }}</h3>
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<ul>
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{{ range .Pages }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .PublishDate.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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</ul>
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{{ end }}
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### Grouping by Page param
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{{ range .Data.Pages.GroupByParam "param_key" }}
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<h3>{{ .Key }}</h3>
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<ul>
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{{ range .Pages }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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</ul>
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{{ end }}
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### Grouping by Page param in date format
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{{ range .Data.Pages.GroupByParamDate "param_key" "2006-01" }}
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<h3>{{ .Key }}</h3>
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<ul>
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{{ range .Pages }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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</ul>
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{{ end }}
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### Reversing Key Order
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The ordering of the groups is performed by keys in alphanumeric order (A–Z,
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1–100) and in reverse chronological order (newest first) for dates.
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While these are logical defaults, they are not always the desired order. There
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are two different syntaxes to change the order; they both work the same way, so
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it’s really just a matter of preference.
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#### Reverse method
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{{ range (.Data.Pages.GroupBy "Section").Reverse }}
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...
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{{ range (.Data.Pages.GroupByDate "2006-01").Reverse }}
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...
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#### Providing the (alternate) direction
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{{ range .Data.Pages.GroupByDate "2006-01" "asc" }}
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...
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{{ range .Data.Pages.GroupBy "Section" "desc" }}
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...
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### Ordering Pages within Group
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Because Grouping returns a key and a slice of pages, all of the ordering methods listed above are available.
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In this example, I’ve ordered the groups in chronological order and the content
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within each group in alphabetical order by title.
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{{ range .Data.Pages.GroupByDate "2006-01" "asc" }}
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<h3>{{ .Key }}</h3>
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<ul>
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{{ range .Pages.ByTitle }}
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<li>
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<a href="{{ .Permalink }}">{{ .Title }}</a>
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<div class="meta">{{ .Date.Format "Mon, Jan 2, 2006" }}</div>
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</li>
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{{ end }}
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</ul>
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{{ end }}
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## Filtering & Limiting Content
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Sometimes you only want to list a subset of the available content. A common
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request is to only display “Posts” on the homepage. Using the `where` function,
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you can do just that.
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### `first`
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`first` works like the `limit` keyword in SQL. It reduces the array to only the
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first _N_ elements. It takes the array and number of elements as input.
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{{ range first 10 .Data.Pages }}
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{{ .Render "summary" }}
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{{ end }}
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### `where`
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`where` works in a similar manner to the `where` keyword in SQL. It selects all
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elements of the slice that match the provided field and value. It takes three
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arguments: 'array or slice of maps or structs', 'key or field name' and 'match
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value'.
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{{ range where .Data.Pages "Section" "post" }}
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{{ .Content }}
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{{ end }}
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### `first` & `where` Together
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Using both together can be very powerful.
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{{ range first 5 (where .Data.Pages "Section" "post") }}
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{{ .Content }}
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{{ end }}
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If `where` or `first` receives invalid input or a field name that doesn’t exist,
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it will return an error and stop site generation.
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These are both template functions and work on not only
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[lists](/templates/list/), but [taxonomies](/taxonomies/displaying/),
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[terms](/templates/terms/) and [groups](/templates/list/).
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[RSS 2.0]: http://cyber.law.harvard.edu/rss/rss.html "RSS 2.0 Specification"
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